Patent Publication Number: US-2023138289-A1

Title: Electric device, controlling method of controlling electric device, and computer readable storage medium

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is a continuation of and claims priority to International Patent Application No. PCT/CN2020/116144, filed Sep. 18, 2020 and titled “ELECTRIC DEVICE, CONTROLLING METHOD OF CONTROLLING ELECTRIC DEVICE, AND COMPUTER READABLE STORAGE MEDIUM,” which is incorporated herein by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present invention relates to an electric device, a controlling method of controlling the electric device, and a computer readable storage medium. 
     BACKGROUND 
     Conventionally, the user shoots with a digital camera, depending on the sense and the grid displayed on the screen when shooting. Furthermore, the user may trim an extra portion of the captured image with the digital camera. Furthermore, the photographed image may become an inappropriate image due to the straight lines appearing around the face. 
     In particular, when the user is a beginner, the user is likely to shoot an unbalanced composition with the digital camera. Furthermore, the beginner is not likely to notice an inappropriate background when a portrait is taken with a digital camera. Furthermore, it is difficult for the beginner to determine the composition by considering the outside of the shooting range. 
     As described above, if the user is a beginner, it is required that the user be able to easily take an image with an appropriate composition so that an inappropriate background does not appear when the user takes an image with a camera of an electronic device such as a smartphone. 
     SUMMARY 
     Therefore, in the electronic device of the present invention, a subject (for example, a person) is photographed by the super wide camera module with a wider angle of view than this wide camera module, and the composition of the planned capturing area for shooting the subject with the wide camera module is determined. Furthermore, in the electronic device, the frame of the composition automatically selected is displayed on the display module. Furthermore, in the electronic device, the display module gives a warning display to an inappropriate background portion in the composition. Then, in the electronic device, the subject is photographed by the wide camera module with the determined composition. 
     In this way, the electric device of the present invention can easily obtain a camera image with an appropriate composition and without improper backgrounds when photographing with a camera of an electronic device such as a smartphone. 
     The present disclosure aims to solve at least one of the technical problems mentioned above. Accordingly, the present disclosure needs to provide an electric device and a controlling method of controlling electric device. 
     In accordance with the present disclosure, an electric device may include: a camera module that takes a photograph of a subject to acquire a first camera image, and takes a photograph of the subject to acquire a second camera image with a wider angle of view than the first camera image; an image signal processor that controls the camera module to acquire a camera image; and a display module that displays an image, wherein the image signal processor acquires the second camera image of the subject by controlling the camera module, then, the image signal processor sets a planned capturing area in the second camera image corresponding to the area of the first camera image planned to be captured by the camera module, then, the image signal processor sets a recommended frame of a recommended composition based on an image of the subject and the planned capturing area in the second camera image, then, the display module displays the planned capturing area and the recommended frame in the second camera image, and then, the image signal processor acquires the first camera image by capturing the subject with a final composition of the planned capturing area by controlling the camera module. 
     In some embodiments, the first camera image is a wide camera image, and the second camera image is a super wide camera image. 
     In some embodiments, the display module displays a warning when an unsuitable image is included around the subject in the super wide camera image, based on the image of the subject and the background image of the subject in the super wide camera image, after the display module displays the planned capturing area and the recommended frame in the super wide camera image. 
     In some embodiments, the camera module includes: a wide camera module that captures the wide camera image by imaging the subject, and a super wide camera module that captures the super wide camera image by imaging the subject at a wider angle of view than the wide camera module. 
     In some embodiments, the image signal processor acquires the super wide camera image of the subject by controlling the super wide camera module, the image signal processor sets the planned capturing area in the super wide camera image corresponding to the area of the wide camera image planned to be captured by the wide camera module, the image signal processor sets the recommended frame of a recommended composition for capturing with the wide camera module, based on the image of the subject and the planned capturing area in the super wide camera image, the display module displays the planned capturing area and the recommended frame, the display module displays a warning when the unsuitable image is included around the subject in the super wide camera image, based on the image of the subject and the background image of the subject in the super wide camera image, and the image signal processor acquires the wide camera image by capturing the subject with the final composition of the planned capturing area by controlling the wide camera module. 
     In some embodiments, the image signal processor determines a final composition of the planned capturing area where the wide camera module captures the subject, in response to a user&#39;s operation input that causes the planned capturing area to approach the recommended frame. 
     In some embodiments, the image signal processor controls the wide camera module to capture the wide camera image by capturing an image of the subject with a final composition of the planned capturing area, in response to user&#39;s operation input. 
     In some embodiments, the image signal processor sets the recommended frame of a recommended composition for capturing with the wide camera module, based on the position and size of the face image of the person of the subject in the planned capturing area. 
     In some embodiments, the image signal processor sets the recommended frame of a recommended composition for capturing with the wide camera module. based on an eye position of the face image of the subject in the planned capturing area. 
     In some embodiments, the image signal processor displays the warning on the display module, when the image signal processor determines that a pre-specified inappropriate image is included around the face image of the subject, based on the face image of the subject and the background image of the subject in the super wide camera image. 
     In some embodiments, when the subject is a plurality of people, the image signal processor sets the recommended frame so as to include the face images of the plurality of people in the super wide camera image. 
     In some embodiments, in the super wide camera image, a shape and size of the range of the planned capturing area and a shape and size of the range of the recommended frame are the same. 
     In some embodiments, the display module displays the wide camera image acquired by capturing the subject with the composition of the final planned capturing area. 
     In some embodiments, the electric device further comprises: an input module which receives the operation of the user; and a main processor that controls the display module and the input module. 
     In accordance with the present disclosure, a controlling method for controlling an electric device including: a camera module that takes a photograph of a subject to acquire a first camera image, and takes a photograph of the subject to acquire a second camera image with a wider angle of view than the first camera image; an image signal processor that controls the camera module to acquire a camera image; and a display module that displays an image, the controlling method comprising: acquiring, by means of the image signal processor, the second camera image of the subject, by controlling the camera module, setting, by means of the image signal processor, a planned capturing area in the second camera image corresponding to an area of the first camera image planned to be captured by the camera module, setting, by means of the image signal processor, a recommended frame of a recommended composition based on an image of the subject and the planned capturing area in the second camera image, displaying, by means of the display module, the planned capturing area and the recommended frame in the second camera image, displaying, by means of the display module, a warning when an unsuitable image is included around the subject in the second camera image, based on the image of the subject and the background image of the subject in the second camera image, and acquiring, by means of the image signal processor, the first camera image by capturing the subject with a final composition of the planned capturing area by controlling the camera module. 
     In accordance with the present disclosure, a computer readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements a controlling method for controlling an electric device comprising: a camera module that takes a photograph of a subject to acquire a first camera image, and takes a photograph of the subject to acquire a second camera image with a wider angle of view than the first camera image; an image signal processor that controls the camera module to acquire a camera image; and a display module that displays an image, and the controlling method comprises: acquiring, by means of the image signal processor, the second camera image of the subject, by controlling the camera module, setting, by means of the image signal processor, a planned capturing area in the second camera image corresponding to an area of the first camera image planned to be captured by the camera module, setting, by means of the image signal processor, a recommended frame of a recommended composition based on an image of the subject and the planned capturing area in the second camera image, displaying, by means of the display module, the planned capturing area and the recommended frame in the second camera image, and acquiring, by means of the image signal processor, the first camera image by capturing the subject with a final composition of the planned capturing area by controlling the camera module. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and/or other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the drawings, in which: 
         FIG.  1    is a diagram illustrating an example of an arrangement of an electric device  100  and a subject  101  according to an embodiment of the present invention; 
         FIG.  2    is a diagram illustrating an example of the configuration of the electric device  100  shown in  FIG.  1   ; 
         FIG.  3    is a diagram showing an example of a display of the display module of the electric device shown in  FIG.  2    when a subject is photographed; 
         FIG.  4    is a diagram showing an example of a flow of control operation of the electric device shown in  FIG.  2    when a subject is photographed; 
         FIG.  5    is a diagram showing a specific example of the model fitting step S 2  in the flow shown in  FIG.  4   ; 
         FIG.  6 A  is a diagram showing an example of a relationship between an image area of a person who is a subject and a recommended frame captured by the wide camera module; 
         FIG.  6 B  is a diagram showing an example of the definition of the regions of the images of a plurality of persons when there are a plurality of persons as subjects; 
         FIG.  7    is a diagram showing a specific example of step S 3  of the composition processing of the flow shown in  FIG.  4   ; 
         FIG.  8 A  is a diagram showing an example A 1  of the recommended frame set in step S 306  shown in  FIG.  7   ; 
         FIG.  8 B  is a diagram showing an example B 1  of the recommended frame set in step S 307  shown in  FIG.  7   ; 
         FIG.  8 C  is a diagram showing an example C 1  of the recommended frame set in step S 308  shown in  FIG.  7   ; 
         FIG.  8 D  is a diagram showing an example D 1  of the recommended frame set in step S 310  shown in  FIG.  7   ; 
         FIG.  8 E  is a diagram showing an example E 1  of the recommended frame set in step S 311  shown in  FIG.  7   ; 
         FIG.  8 F  is a diagram showing an example of the relationship between the face image of the subject and the recommended frame; 
         FIG.  9    is a diagram showing a specific example of a flow following in the case ( 1 ) where it is determined in step S 301  shown in  FIG.  7    that the planned capturing area is not vertically long (that is, horizontally long); 
         FIG.  10 A  is a diagram showing an example A 2  of the recommended frame set in step S 315  shown in  FIG.  9   ; 
         FIG.  10 B  is a diagram showing an example B 2  of the recommended frame set in step S 316  shown in  FIG.  9   ; 
         FIG.  10 C  is a diagram showing an example C 2  of the recommended frame set in step S 317  shown in  FIG.  9   ; 
         FIG.  11    is a diagram showing a specific example of the flow following in the case ( 2 ) where it is determined in step S 302  shown in  FIG.  7    and step S 312  shown in  FIG.  9    that the subject&#39;s face is not one (That is, there are multiple faces of the subject); 
         FIG.  12 A  is a diagram showing an example A 3  of the recommended frame set in step S 322  shown in  FIG.  11   ; 
         FIG.  12 B  is a diagram showing an example B 3  of the recommended frame set in step S 323  shown in  FIG.  11   ; 
         FIG.  12 C  is a diagram showing an example C 3  of the recommended frame set in step S 324  shown in  FIG.  11   ; 
         FIG.  13    is a diagram showing a specific example of step S 4  of the warning process of the flow shown in  FIG.  13   ; 
         FIG.  14 A  is a diagram showing an example in which an inappropriate background (a horizontal bar) is located near the face image of the subject; 
         FIG.  14 B  is a diagram showing an example of the image of the processing in step S 401  shown in  FIG.  13    for the image shown in  FIG.  14 A ; 
         FIG.  14 C  is a diagram showing an example of an image of the process in step S 402  shown in  FIG.  13   , subsequent to  FIG.  14 B ; 
         FIG.  14 D  is a diagram illustrating an example of an image of the process in step S 403  shown in  FIG.  13   , subsequent to  FIG.  14 C ; 
         FIG.  15 A  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned on for the image shown in  FIG.  14 A ; 
         FIG.  15 B  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned off for the image shown in  FIG.  14 A ; 
         FIG.  16 A  is a diagram showing an example in which an inappropriate background (a vertical bar) is located near the face image of the subject; 
         FIG.  16 B  is a diagram showing an example of an image of the processing in step S 401  shown in  FIG.  13    for the image shown in  FIG.  16 A ; 
         FIG.  16 C  is a diagram showing an example of an image of the process in step S 402  shown in  FIG.  13   , subsequent to  FIG.  16 B ; 
         FIG.  16 D  is a diagram illustrating an example of an image of the process in step S 403  shown in  FIG.  13   , subsequent to  FIG.  16 C ; 
         FIG.  17 A  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned on for the image shown in  FIG.  16 A ; and 
         FIG.  17 B  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned off for the image shown in  FIG.  16 A . 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments of the present disclosure will be described in detail and examples of the embodiments will be illustrated in the accompanying drawings. The same or similar elements and the elements having same or similar functions are denoted by like reference numerals throughout the descriptions. The embodiments described herein with reference to the drawings are explanatory, which aim to illustrate the present disclosure, but shall not be construed to limit the present disclosure. 
       FIG.  1    is a diagram illustrating an example of an arrangement of an electric device  100  and a subject  101  according to an embodiment of the present invention.  FIG.  2    is a diagram illustrating an example of the configuration of the electric device  100  shown in  FIG.  1   . 
     As shown in  FIG.  1    and  FIG.  2   , for example, the electric device  100  includes a wide camera module  10  (a first camera module), a super wide camera module (a second camera module)  50 , a range sensor module  20 , and an image signal processor  30  that controls the camera module  10 , the super wide camera module  50 , and the range sensor module  20 , and processes camera image data acquired from the wide camera module  10  and the super wide camera module  50 . Note that, as shown in  FIGS.  1  and  2   , the wide camera module  10  and the super wide camera module  50  form a camera module  102 . That is, the camera module  102  images a subject to acquire a wide camera image, and also captures the subject at a wider angle of view than the wide camera image to acquire a super wide camera image. 
     The wide camera module  10  includes, for example, a master lens  10   a  that is capable of focusing on a subject, a master image sensor  10   b  that detects an image inputted via the master lens  10   a,  and a master image sensor driver  10   c  that drives the master image sensor  10   b,  as shown in  FIG.  2   . 
     Furthermore, the wide camera module  10  includes, for example, a Gyro sensor  10   d  that the angular velocity and the acceleration of the wide camera module  10 , a focus &amp; OIS actuator  10   f  that actuates the master lens  10   a,  and a focus &amp; OIS driver  10   e  that drives the focus &amp; OIS actuator  10   f,  as shown in  FIG.  2   . 
     For example, the wide camera module  10  acquires a wide camera image (a first camera image) of the subjects  101 . The super wide camera module  50  includes, for example, a slave lens  50   a  that is capable of focusing on a subject, a slave image sensor  50   b  that detects an image inputted via the slave lens  50   a,  and a slave image sensor driver  50   c  that drives the slave image sensor  50   b,  as shown in  FIG.  2   . 
     Furthermore, the super wide camera module  50  includes, for example, a Gyro sensor  50   d  that the angular velocity and the acceleration of the super wide camera module  50 , a focus &amp; OIS actuator  50   f  that actuates the slave lens  50   a,  and a focus &amp; OIS driver  50   e  that drives the focus &amp; OIS actuator  50   f,  as shown in  FIG.  2   . 
     The super wide camera module  50  acquires a super wide camera image (a second camera image) of the subjects  101  with a wider angle of view than that of the wide camera module  10 . 
     The range sensor module  20  acquires range depth information of the subject  101  by using a light. Especially, the range sensor module  20  acquires the time of flight (ToF) depth information (ToF depth value) as the range depth information by emitting pulsed light toward the subjects  101 , and detecting the reflection light from the subjects  101 , for example. The image signal processor  30  controls, for example, the camera module  102  (the wide camera module  10  and the super wide camera module  50 ) and the range sensor module  20  to acquire a camera image based on the camera image obtained by means of the wide camera module  10 , the super wide camera image obtained by means of the super wide camera module  50 , and the ToF depth information (the range depth information) obtained by means of the range sensor module  20 . Furthermore, as shown in  FIG.  2   , for example, the electric device  100  includes a global navigation satellite system (GNSS) module  40 , a wireless communication module  41 , a CODEC  42 , a speaker  43 , a microphone  44 , a display module  45 , an input module  46 , an inertial measuring unit (IMU)  47 , a main processor  48 , and a memory  49 . 
     The GNSS module  40  measures the current position of the electric device  100 , for example. 
     The wireless communication module  41  performs wireless communications with the Internet, for example. 
     The CODEC  42  bidirectionally performs encoding and decoding, using a predetermined encoding/decoding method, as shown in  FIG.  2    for example. 
     The speaker  43  outputs a sound in accordance with sound data decoded by the CODEC  42 , for example. 
     The microphone  44  outputs sound data to the CODEC  42  based on inputted sound, for example. 
     The display module  45  displays predefined information. The display module  45  is, for example, a touch panel. 
     The input module  46  receives a user&#39;s input (a user&#39;s operations). The input module  46  is included in, for example, the touch panel. 
     The IMU  47  detects, for example, the angular velocity and the acceleration of the electric device  100 . 
     The main processor  48  controls the global navigation satellite system (GNSS) module  40 , the wireless communication module  41 , the CODEC  42 , the speaker  43 , the microphone  44 , the display module  45 , the input module  46 , and the IMU  47 . 
     The memory  49  stores a program and data required for the image signal processor  30  to control the wide camera module  10 , the super wide camera module  50  and the range sensor module  20 , acquired image data, and a program and data required for the main processor  48  to control the electric device  100 . 
     For example, the memory  49  includes a computer readable storage medium having a computer program stored thereon, wherein when the computer program is executed by the main processor  48 , the computer program implements a controlling method for controlling the electric device  100 . For example, the controlling method comprises: acquiring, by means of the image signal processor  30 , the super wide camera image of the subject, by controlling the camera module  102 ,
         setting, by means of the image signal processor  30 , a planned capturing area in the super wide camera image corresponding to an area of the wide camera image planned to be captured by the camera module  102 ,   setting, by means of the image signal processor  30 , a recommended frame of a recommended composition based on an image of the subject and the planned capturing area in the super wide camera image,   displaying, by means of the display module, the planned capturing area and the recommended frame in the super wide camera image,   displaying, by means of the display module  45 , a warning when an unsuitable image is included around the subject in the super wide camera image, based on the image of the subject and the background image of the subject in the super wide camera image, and   acquiring, by means of the image signal processor, the wide camera image by capturing the subject with a final composition of the planned capturing area by controlling the camera module  102 .       

     The electric device  100  having the above-described configuration is a mobile phone such as a smartphone in this embodiment, but may be other types of electric devices (for instance, a tablet computer and a PDA) including the wide camera module  10  and the super wide camera module  50 . 
     Here, an example of the display of the display module  45  of the electronic device  100 , when the subject  101  is photographed, will be described.  FIG.  3    is a diagram showing an example of a display of the display module of the electric device shown in  FIG.  2    when a subject is photographed. 
     As shown in  FIG.  3   , when the subject  101  is photographed, the image planned capturing area X corresponding to an area of the wide camera image to be captured by the camera module  102  and the recommended frame Z of the recommended composition for photographing with the camera module  102  are displayed as the super wide camera image on the display module  45  of the electronic device  100 . 
     The user rotates or moves the electronic device  100  so that the planned capturing area X approaches the recommended frame Z. 
     In addition, in the super wide camera image, the shape and size of planned capturing area X and the shape and size of the recommended frame Z are the same. 
     Then, the subject  101  is photographed by the wide camera module  50  of the camera module  102  in response to a user operation on the shutter button  46   a  of the input module  46 . 
     Next, a control operation relating to shooting of the electronic device  100  having the above-described configuration will be described. 
       FIG.  4    is a diagram showing an example of a flow of control operation of the electric device shown in  FIG.  2    when a subject is photographed. 
     First, as shown in  FIG.  4   , the image signal processor  30  of the electric device  100  controls the super wide camera module to acquire the super wide camera image of the subject (the step S 1  of  FIG.  4   ). 
     Next, the image signal processor  30  executes fitting of the model of the photographed subject (the step S 2  of  FIG.  4   ). 
     Next, the image signal processor  30  executes a composition processing (the step S 3  of  FIG.  4   ). 
     That is, the image signal processor  30  sets a planned capturing area X in the super wide camera image corresponding to the area of the wide camera image planned to be captured by the wide camera module. 
     Then, the image signal processor  30  sets the recommended frame Z of the recommended composition for shooting with the wide camera module  10  based on the image of the subject in the super wide camera image and the planned capturing area X. 
     Next, the image signal processor  30  executes a warning process to warn that an inappropriate background is reflected (the step S 4  of  FIG.  4   ). 
     Next, the image signal processor  30  displays the recommended frame Z and displays a warning (the step S 5  of  FIG.  4   ). 
     That is, the display module  45  displays the planned capturing area X, the recommended frame Z, and a warning for an inappropriate background. 
     The display module  45  displays a warning based on the image of the subject in the super wide camera image and the background image of the subject, when an inappropriate image is included around the subject. 
     Next, the image signal processor  30  determines whether the user has operated the shutter button  46   a  of the input module  46  (the step S 6  of  FIG.  4   ). 
     The user pans and tilts the electronic device  100  (camera module  102 ) during the steps S 1  to S 6  of  FIG.  4   . The electronic device  100  (camera module  102 ) may be rotated by a pan/tilt device (not shown). 
     In this case, the image signal processor  30  determines the final composition of the planned shooting area X in which the wide camera module  10  shoots the subject, in response to a user&#39;s operation input that causes the planned capturing area X to approach the recommended frame Z. 
     Note that, as described above, a person may perform the shutter operation. In the electronic device  100 , the shutter may be automatically operated when the set conditions are met. 
     Next, the image signal processor  30  controls the wide camera module  10  to capture the wide camera image by capturing the subject with the final composition of the planned capturing area X, according to the operation input of the user (the step S 7  of  FIG.  4   ). 
     Next, the image signal processor  30  outputs data to the display module  45  (step S 8 ). Then, the display module  45  displays the wide camera image acquired by photographing the subject with the composition of the final planned capturing area X. 
     Here, a specific example of step S 2  of model fitting, in the flow of the control operation of the electronic device  100  at the time of photographing shown in  FIG.  4   , will be described. 
     First, the image signal processor  30  executes the detection of the face and eyes of the person who is the subject in the super wide camera image (step S 201 ). 
     When the eyes cannot be detected from the face image, the upper and lower half positions of the face image area are set as the eye positions. Also, depending on the algorithm, the face frame may not be the size that covers the face. In that case, the size is corrected to include the face. 
     Next, the image signal processor  30  detects the pose of the person who is the subject of the super wide camera image (step S 202 ). 
     If the pose cannot be detected, an area having a height of about 5 to 10 times the area of the face image is set as the human area of the subject. 
     Next, the image signal processor  30  executes segmentation in the super wide camera image (step S 203 ). 
     If segmentation is not possible, then by estimating the human region of the subject by widening the outline of the subject from the result of pose detection. 
     The human area of the subject has attributes of face, eyes, pose, and segmentation area. 
     In addition, in the super wide camera image, if there is an object of a size equivalent to a person or an object smaller than the person, the object is also considered as a subject. 
     In addition, in the super wide camera image, when the object other than the person spreads over a wide area, it is not considered. 
     Here,  FIG.  6 A  is a diagram showing an example of a relationship between an image area of a person who is a subject and a recommended frame captured by the wide camera module.  FIG.  6 B  is a diagram showing an example of the definition of the regions of the images of a plurality of persons when there are a plurality of persons as subjects. 
     In the following description, the relationship between the image area of the person who is the subject and the recommended frame captured by the wide camera module is defined as H: Recommended frame height=wide camera vertical shooting range, W: Recommended frame width=wide Left and right shooting range of camera, h: height of the subject&#39;s face (face area Q), and t: Height of the entire body of the subject, as shown in  FIG.  6 A . 
     Further, in the case where there are a plurality of persons who are subjects, the regions of the images of the plurality of persons are defined as h′: Height that covers all faces (face area QP), w′: Width that covers all faces, t′: Height that covers the body of all subjects, and b′: Width that covers all the body, as shown in  FIG.  6 B , for example. 
     Here, a specific example of the step S 3  of the composition process of the flow shown in  FIG.  4    will be described. 
       FIG.  7    is a diagram showing a specific example of step S 3  of the composition processing of the flow shown in  FIG.  4   .  FIG.  8 A  is a diagram showing an example Al of the recommended frame set in step S 306  shown in  FIG.  7   .  FIG.  8 B  is a diagram showing an example B 1  of the recommended frame set in step S 307  shown in  FIG.  7   .  FIG.  8 C  is a diagram showing an example C 1  of the recommended frame set in step S 308  shown in  FIG.  7   .  FIG.  8 D  is a diagram showing an example D 1  of the recommended frame set in step S 310  shown in  FIG.  7   .  FIG.  8 E  is a diagram showing an example E 1  of the recommended frame set in step S 311  shown in  FIG.  7   .  FIG.  8 F  is a diagram showing an example of the relationship between the face image of the subject and the recommended frame. 
     First, as shown in  FIG.  7   , the image signal processor  30  determines whether the planned capturing area is vertically long or not in the composition process of the step S 3  of  FIG.  4    (the step S 301  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines in step S 301  that the planned capturing area is vertically long, the image signal processor  30  determines whether there is only one human face of the subject or not (the step S 302  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines in step S 302  that the subject&#39;s face is one, the image signal processor  30  determines whether the height “h” of the subject&#39;s face&lt;the shooting vertical range “H” of the wide camera or not (the step S 303  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines that “h”&lt;“H” in the step S 303 , the image signal processor  30  determines whether 3“h”&lt;“H” or not (the step S 304  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines in step S 304  that 3h&lt;H, the image signal processor  30  determines whether the height “t” of the entire body of the subject&lt;0.8“H” or not (the step S 305  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines in the step S 305  that “t”&lt;0.8“H”, the image signal processor  30  sets the recommended frame Z at a position where the entire body of the subject enters (the step S 306  of  FIG.  7   ), as shown in  FIG.  8 A . 
     On the other hand, when the image signal processor  30  determines in step S 305  that “t”&lt;0.8“H” is not satisfied, the image signal processor  30  sets the recommended frame Z at a position where the eye height of the subject is “H”/4, as shown in  FIG.  8 B  (the step S 307  of  FIG.  7   ). 
     Further, when the image signal processor  30  determines in step S 304  described above that 3 “h”&lt;“H” is not satisfied, the image signal processor  30  sets the recommended frame Z at a position where the gap on the head of the subject and the gap on the side of the face have the same value g as shown in  FIG.  8 C  (the step S 308  of  FIG.  7   ). 
     Also, when the image signal processor  30  determines that “h”&lt;“H” in the step S 303  described above, the image signal processor  30  determines whether “h”&lt;2“H” or not (the step S 309  of  FIG.  7   ). 
     Then, when the image signal processor  30  determines in the step S 309  that “h”&lt;2“H”, the image signal processor  30  sets the recommended frame Z at a position where the height of the subject&#39;s eyes is “H”/3 as shown in  FIG.  8 D  (the step S 310  of  FIG.  7   ). 
     On the other hand, when the image signal processor  30  determines in the step S 309  that the height of the subject&#39;s face is not “h”&lt;2 “H”, the image signal processor  30  sets the recommended frame to be horizontally long and sets the recommended frame at a position where the eye height is “H”/3 as shown in  FIG.  8 E  (the step S 311  of  FIG.  7   ). 
     In this way, the image signal processor  30  sets the recommended frame Z of the recommended composition for shooting with the wide camera module  10 , based on the position and size of the face image of the person of the subject in the super wide camera image. 
     Further, the image signal processor  30  sets the recommended frame Z of a recommended composition for shooting with the wide camera module  10 , based on the eye position of the face image of the subject in the super wide camera image. 
     For settings A 1  and B 1 , adjust the left and right sides of the recommended frame Z within a range up to ⅓ of the width of the recommended frame Z at a position where the entire body of the subject can enter. 
     Regarding the vertical position of setting B 1 , finely adjust the vertical position so that it does not cut at the knees of the subject. 
     The hysteresis may be set or the filtering may be performed to prevent frequent transitions due to subtle changes in values between settings A 1  and B 1  and between settings B 1  and C 1 . 
     As shown in  FIG.  8 F , the right and left sides of the recommended frame Z may be equally spaced within a range in which the center of the face of the subject does not extend beyond the predetermined range of the recommended frame Z. 
     Next, details of the flow in the case where the planned capturing area is not vertically long (that is, horizontally long) will be described. 
       FIG.  9    is a diagram showing a specific example of a flow following in the case ( 1 ) where it is determined in step S 301  shown in  FIG.  7    that the planned capturing area is not vertically long (that is, horizontally long).  FIG.  10 A  is a diagram showing an example A 2  of the recommended frame set in step S 315  shown in  FIG.  9   .  FIG.  10 B  is a diagram showing an example B 2  of the recommended frame set in step S 316  shown in  FIG.  9   .  FIG.  10 C  is a diagram showing an example C 2  of the recommended frame set in step S 317  shown in  FIG.  9   . 
     As shown in  FIG.  9   , when the image signal processor  30  determines in the step S 301  shown in  FIG.  7    that the planned capturing area is not vertically long (that is, horizontally long) ( 1 ), the image signal processor  30  determines whether the subject has only one face or not (the step S 312  of  FIG.  9   ). 
     Then, when the image signal processor  30  determines in the step S 312  that the number of faces of the human subject is one, the image signal processor  30  determines whether 3“h”&lt;“H” or not (the step S 313  of  FIG.  9   ). 
     Then, when the image signal processor  30  determines in step S 313  that 3“h”&lt;“H”, the image signal processor  30  determines whether “t”&lt;0.8“H” or not (the step S 314  of  FIG.  9   ). 
     Then, when the image signal processor  30  determines in the step S 314  that “t”&lt;0.8“H”, the image signal processor  30  sets the recommended frame Z to a position where the entire body of the subject enters as shown in  10 A (the step S 315  of  FIG.  9   ). 
     On the other hand, when the image signal processor  30  determines in the step S 314  that “t”&lt;0.8“H” is not satisfied, the image signal processor  30  sets the recommended frame Z at a position where the eye height of the subject is “H”/4 as shown in  FIG.  10 B  (the step S 316  of  FIG.  9   ). 
     Also, when the image signal processor  30  determines in the step S 313  described above that 3“h”&lt;“H” is not satisfied, the image signal processor  30  sets the recommended frame Z at a position where the eye height of the subject is “H”/3 as shown in  FIG.  10 C  (the step S 317  of  FIG.  9   ). 
     In the examples of  FIGS.  9 A and  9 B , the left and right sides of the recommended frame Z are adjusted at positions where the entire body of the subject and the object S enter, and the center of the face of the subject is adjusted within ⅓ of the width of the recommended frame Z. 
     Next, details of the flow when it is determined that the subject has not one face (That is, there are multiple faces of the subject) will be described. 
       FIG.  11    is a diagram showing a specific example of the flow following in the case ( 2 ) where it is determined in step S 302  shown in  FIG.  7    and step S 312  shown in  FIG.  9    that the subject&#39;s face is not one (That is, there are multiple faces of the subject).  FIG.  12 A  is a diagram showing an example A 3  of the recommended frame set in step S 322  shown in  FIG.  11   .  FIG.  12 B  is a diagram showing an example B 3  of the recommended frame set in step S 323  shown in  FIG.  11   .  FIG.  12 C  is a diagram showing an example C 3  of the recommended frame set in step S 324  shown in  FIG.  11   . 
     As shown in  FIG.  11   , when the image signal processor  30  determines in step S 302  shown in  FIG.  7    and step S 312  shown in  FIG.  9    that the subject&#39;s face is not one (That is, there are multiple faces of the subject.) ( 2 ), the image signal processor  30  determines whether there is no human face of the subject or not (step S 318 ). 
     When the image signal processor  30  determines in the step S 318  that there is no human face of the subject, the image signal processor  30  ends the composition process of step S 3 . 
     On the other hand, when the image signal processor  30  determines in the step S 318  that there is a face of the subject, the image signal processor  30  determines whether “h′”&lt;“H” and “w′”&lt;“W” or not (the step S 319  of  FIG.  11   ). 
     Then, when the image signal processor  30  determines in the step S 319  that “h′”&lt;“H” and “w′”&lt;“W” are not satisfied, the image signal processor  30  ends the composition process in step S 3 . 
     On the other hand, when the image signal processor  30  determines in the step S 319  that “h′”&lt;“H” and “w′”&lt;“W”, the image signal processor  30  determines whether 2“h′”&lt;“H” or not (the step S 320  of  FIG.  11   ). 
     Then, when the image signal processor  30  determines in step S 320  that 2“h′”&lt;“H”, the image signal processor  30  determines whether “t′”&lt;0.8“H” or not (the step S 321  of  FIG.  11   ). 
     Then, when the image signal processor  30  determines in the step S 321  that “t+”&lt;0.8“H”, the image signal processor  30  sets the recommended frame Z to a position where the entire body of all the subject can enter as shown in  12 A (the step S 324  of  FIG.  9   ). 
     On the other hand, when the image signal processor  30  determines in the step S 321  that “t′”&lt;0.8“H” is not satisfied, the image signal processor  30  sets the recommended frame Z at a position where the center of the comprehensive frame QP of the subject&#39;s face is “H”/4 as shown in  FIG.  12 B  (step S 323 ). 
     Further, when the image signal processor  30  determines in the step S 320  that 2“h′”&lt;“H” is not satisfied, the image signal processor  30  matches the upper and lower centers of the comprehensive frame QP of the face of the subject and the recommended frame Z as shown in  FIG.  12 C  (the step S 324  of  FIG.  11   ). 
     In this way, the image signal processor  30  sets the recommended frame Z so as to include the face images of the plurality of persons in the super wide camera image when the subjects are a plurality of persons. 
     In the settings A 3 , B 3 , C 3  shown in  FIGS.  12 A to  12 C , the left and right centers of the comprehensive line QP of the face are aligned with the left and right centers of the recommended frame. 
     Through the above steps S 301  to S 324 , the composition process (the step S 3  of  FIG.  4   ) for setting the recommended frame is completed. 
     Next, a specific example of the warning process in step S 4  of the flow shown in  FIG.  4    will be described. 
       FIG.  13    is a diagram showing a specific example of step S 4  of the warning process of the flow shown in  FIG.  13   .  FIG.  14 A  is a diagram showing an example in which an inappropriate background (a horizontal bar) is located near the face image of the subject.  FIG.  14 B  is a diagram showing an example of the image of the processing in step S 401  shown in  FIG.  13    for the image shown in  FIG.  14 A .  FIG.  14 C  is a diagram showing an example of an image of the process in step S 402  shown in  FIG.  13   , subsequent to  FIG.  14 B .  FIG.  14 D  is a diagram illustrating an example of an image of the process in step S 403  shown in  FIG.  13   , subsequent to  FIG.  14 C . 
     First, as shown in  FIG.  13   , in the warning process, the image signal processor  30  detects a line segment in a region other than the body in a region R having a width and height three times the frame Q of the subject&#39;s face of the image shown in  FIG.  14 A  (the step S 401  of  FIG.  13   ,  FIG.  14 B ). 
     Next, the image signal processor  30  calculates the distance N 1  between the center of the frame M covering the subject&#39;s eyes and the detected line segment L (the step S 402  of  FIG.  13   ,  FIG.  14 C ). 
     Next, the image signal processor  30  calculates the distance N 2  between the center of the lower edge of the frame Q of the subject&#39;s face and the line segment L (the step S 403  of  FIG.  13   ,  FIG.  14 D ). 
     Next, if there is a line segment smaller than a predetermined distance of the subject with respect to the calculated distances N 1  and N 2 , the image signal processor  30  sets the line segment L as a warning target (the step S 404  of  FIG.  13   ). 
     Through the above steps S 301  to S 324 , the warning process (the step S 4  of  FIG.  4   ) is completed. 
     Next, a specific example of the step S 5  of the recommended composition frame/warning display in the flow shown in  FIG.  4    will be described. 
       FIG.  15 A  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned on for the image shown in  FIG.  14 A .  FIG.  15 B  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned off for the image shown in  FIG.  14 A . 
     As shown in  FIG.  15 A , in the recommended frame/warning display in step S 5 , the set recommended frame Z and the warning area Y determined by the warning process are displayed on the display module  45 . 
     In the display module  45 , the warning area Y is emphasized by changing the color or blinking. 
     In this way, the image signal processor  30  displays the warning on the display module when a predetermined improper image is included around the face image of the subject, based on the face image of the subject and the background image of the subject in the super wide camera image. 
     Next, another specific example of the warning process of the flow of the step S 4  shown in  FIG.  4    will be described. 
       FIG.  16 A  is a diagram showing an example in which an inappropriate background (a vertical bar) is located near the face image of the subject.  FIG.  16 B  is a diagram showing an example of an image of the processing in step S 401  shown in  FIG.  13    for the image shown in  FIG.  16 A .  FIG.  16 C  is a diagram showing an example of an image of the process in step S 402  shown in  FIG.  13   , subsequent to  FIG.  16 B .  FIG.  16 D  is a diagram illustrating an example of an image of the process in step S 403  shown in  FIG.  13   , subsequent to  FIG.  16 C . 
     First, as shown in  FIG.  13   , in the warning process, the image signal processor  30  detects a line segment in a region other than the body in a region R having a width and height three times the frame Q of the subject&#39;s face of the image shown in  FIG.  16 A  (the step S 401  of  FIG.  13   ,  FIG.  16 B ). 
     Next, the image signal processor  30  calculates a distance N 3  between the left and right centers of the frame M covering the subject&#39;s eyes and the detected line segment L (the step S 402  of  FIG.  13   ,  FIG.  16 C ). 
     Next, the image signal processor  30  calculates the distance N 4  between the center of the lower end of the frame Q of the subject&#39;s face and the line segment L (the step S 403  of  FIG.  13   ,  FIG.  16 D ). 
     Next, if there is a line segment smaller than a predetermined distance of the subject with respect to the calculated distances N 3  and N 4 , the image signal processor  30  sets the line segment as a warning target (step S 404 ). 
     Next, another specific example of the recommended composition frame/warning display in step S 5  of the flow shown in  FIG.  4    will be described. 
       FIG.  17 A  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned on for the image shown in  FIG.  16 A .  FIG.  17 B  is a diagram showing an example of the display of the display module  45  of the electronic device  100  when the warning in step S 404  shown in  FIG.  13    is turned off for the image shown in  FIG.  16 A . 
     As shown in  FIG.  17 A , in the recommended frame/warning display in step S 5 , the set recommended frame Z and the warning area Y determined by the warning process are displayed on the display module  45 . 
     In the display module  45 , the warning area Y is emphasized by changing the color or blinking. 
     As described above, the electric device of the present invention can easily obtain a camera image with an appropriate composition and without improper background when photographing with a camera of an electronic device such as a smartphone. 
     In the description of embodiments of the present disclosure, it is to be understood that terms such as “central”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise” and “counterclockwise” should be construed to refer to the orientation or the position as described or as shown in the drawings in discussion. These relative terms are only used to simplify the description of the present disclosure, and do not indicate or imply that the device or element referred to must have a particular orientation, or must be constructed or operated in a particular orientation. Thus, these terms cannot be constructed to limit the present disclosure. 
     In addition, terms such as “first” and “second” are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, a feature defined as “first” and “second” may comprise one or more of this feature. In the description of the present disclosure, “a plurality of” means “two or more than two”, unless otherwise specified. 
     In the description of embodiments of the present disclosure, unless specified or limited otherwise, the terms “mounted”, “connected”, “coupled” and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements which can be understood by those skilled in the art according to specific situations. 
     In the embodiments of the present disclosure, unless specified or limited otherwise, a structure in which a first feature is “on” or “below” a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are not in direct contact with each other, but are in contact via an additional feature formed therebetween. Furthermore, a first feature “on”, “above” or “on top of” a second feature may include an embodiment in which the first feature is orthogonally or obliquely “on”, “above” or “on top of” the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature “below”, “under” or “on bottom of” a second feature may include an embodiment in which the first feature is orthogonally or obliquely “below”, “under” or “on bottom of” the second feature, or just means that the first feature is at a height lower than that of the second feature. 
     Various embodiments and examples are provided in the above description to implement different structures of the present disclosure. In order to simplify the present disclosure, certain elements and settings are described in the above. However, these elements and settings are only by way of example and are not intended to limit the present disclosure. In addition, reference numbers and/or reference letters may be repeated in different examples in the present disclosure. This repetition is for the purpose of simplification and clarity and does not refer to relations between different embodiments and/or settings. Furthermore, examples of different processes and materials are provided in the present disclosure. However, it would be appreciated by those skilled in the art that other processes and/or materials may also be applied. 
     Reference throughout this specification to “an embodiment”, “some embodiments”, “an exemplary embodiment”, “an example”, “a specific example” or “some examples” means that a particular feature, structure, material, or characteristics described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of the above phrases throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. 
     Any process or method described in a flow chart or described herein in other ways may be understood to include one or more modules, segments or portions of codes of executable instructions for achieving specific logical functions or steps in the process, and the scope of a preferred embodiment of the present disclosure includes other implementations, in which it should be understood by those skilled in the art that functions may be implemented in a sequence other than the sequences shown or discussed, including in a substantially identical sequence or in an opposite sequence. 
     The logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function, may be specifically achieved in any computer readable medium to be used by the instructions execution system, device or equipment (such as a system based on computers, a system comprising processors or other systems capable of obtaining instructions from the instructions execution system, device and equipment executing the instructions), or to be used in combination with the instructions execution system, device and equipment. As to the specification, “the computer readable medium” may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment. More specific examples of the computer readable medium comprise but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device), a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM or a flash memory), an optical fiber device and a portable compact disk read-only memory (CDROM). In addition, the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories. 
     It should be understood that each part of the present disclosure may be realized by the hardware, software, firmware or their combination. In the above embodiments, a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instructions execution system. For example, if it is realized by the hardware, likewise in another embodiment, the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA), a field programmable gate array (FPGA), etc. 
     Those skilled in the art shall understand that all or parts of the steps in the above exemplifying method of the present disclosure may be achieved by commanding the related hardware with programs. The programs may be stored in a computer readable storage medium, and the programs comprise one or a combination of the steps in the method embodiments of the present disclosure when run on a computer. 
     In addition, each function cell of the embodiments of the present disclosure may be integrated in a processing module, or these cells may be separate physical existence, or two or more cells are integrated in a processing module. The integrated module may be realized in a form of hardware or in a form of software function modules. When the integrated module is realized in a form of software function module and is sold or used as a standalone product, the integrated module may be stored in a computer readable storage medium. 
     The storage medium mentioned above may be read-only memories, magnetic disks, CD, etc. 
     Although embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that the embodiments are explanatory and cannot be construed to limit the present disclosure, and changes, modifications, alternatives and variations can be made in the embodiments without departing from the scope of the present disclosure.