Abstract:
A system for image production in a KTV setting uses more than one display screen, a first screen for displaying a star MV and a song menu and a second screen for images of a singer as captured by cameras within the KTV setting. The system includes a capturing unit and a processing unit. The capturing unit captures images of the singer. The processing unit produces a singer MV according to the images of the single or plurality of singers, which can be enhanced with special effects, and displays the singer MV on the second screen.

Description:
FIELD 
       [0001]    The subject matter herein generally relates to image production systems. 
       BACKGROUND 
       [0002]    In general, karaoke television (KTV) is equipped with two display devices, but the two display devices show the same pictures, that is only an MV and lyrics prompts. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Implementations of the present technology will now be described, by way of example only, with reference to the attached figures. 
           [0004]      FIG. 1  is a block diagram of an embodiment of the present disclosure of a KTV room with an image production system. 
           [0005]      FIG. 2  is a block diagram of a first embodiment of the image production system. 
           [0006]      FIG. 3  is a block diagram of a second embodiment of the image production system. 
           [0007]      FIG. 4  is a schematic diagram of a network unit of the system of  FIG. 2 . 
           [0008]      FIG. 5  is a schematic diagram of a background canvas of the system of  FIG. 2 . 
           [0009]      FIG. 6  is a schematic diagram of a microphone of the system of  FIG. 2 . 
           [0010]      FIG. 7  is a schematic diagram of a face and target template in the system of  FIG. 2 . 
           [0011]      FIG. 8  is a flow diagram of an embodiment of an image production method. 
           [0012]      FIG. 9  is a flow diagram of another embodiment of an image production method. 
           [0013]      FIG. 10  is a flow diagram of determining the number of microphones in the method of  FIG. 8 . 
           [0014]      FIG. 11  is a flow diagram of extracting the face target template in the method of  FIG. 8 . 
           [0015]      FIG. 12  is a flow diagram of a method for a singer singing alone in the method of  FIG. 8 . 
           [0016]      FIG. 13  is a flow diagram of a method for a singer singing alone in the method of  FIG. 8 . 
           [0017]      FIG. 14  is a flow diagram of a method for two people or more singing together in the method of  FIG. 8 . 
           [0018]      FIG. 15  is a flow diagram of a method for two people or more singing together in the method of  FIG. 8 . 
       
    
    
     DETAILED DESCRIPTION 
       [0019]    It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein. 
         [0020]    Several definitions that apply throughout this disclosure will now be presented. 
         [0021]    The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series, and the like. 
         [0022]      FIG. 1  illustrates an image production system  100  which is installed in a KTV room  600 . 
         [0023]    The KTV room  600  comprises a first display screen  601 , a second display screen  602 , and a singer  200 . The first display screen  601  and the second display screen  602  are installed on a wall facing directly in the KTV room  600 . The first display screen  601  is configured to display a menu and a music video (MV) image screen with the lyrics prompt. 
         [0024]      FIG. 2  illustrates that the image production system  100  comprises a capturing unit  10 , a processing unit  30 , a network unit  40 , a background canvas  50 , and a microphone  70 . The processing unit  30  is connected to the capturing unit  10 , the second display screen  602 , the network unit  40 , the background canvas  50 , and the microphone  70 . The network unit  40  is connected to the first display screen  601 . 
         [0025]    The image production system  100  further comprises a lighting unit  20 . The lighting unit  20  is electrically coupled to the processing unit  30 . The lighting unit  20  emits light in three colors, red, green, and blue. 
         [0026]      FIG. 3  illustrates that the capturing unit  10  comprises a first image capturing lens  101 , a second image capturing lens  102 , a third image capturing lens  103 , a fourth image capturing lens  104 , and a fifth image capturing lens  105 . The first image capturing lens  101 , the second image capturing lens  102 , the third image capturing lens  103 , and the fourth image capturing lens  104  are installed in the four corners of the KTV room  600 . The fifth image capturing lens  105  is installed at a position between the first display screen  601  and the second display screen  602 . The fifth image capturing lens  105  acquires an image of the singer  200  which includes the background canvas  50 . 
         [0027]    The capturing unit  10  acquires the image information in the KTV room  600  at 360-degree viewing angles, and transmits the image information to the processing unit  30 . In at least one embodiment, the processing unit  30  can be a micro processor. 
         [0028]    The lighting unit  20  comprises a first lamp  201 , a second lamp  202 , a third lamp  203 , a fourth lamp  204 , and a fifth lamp  205 . The first lamp  201 , the second lamp  202 , the third lamp  203 , and the fourth lamp  204  are installed in the corners of the KTV room  600 . The fifth lamp  205  is a white light. The fifth lamp  205  assists the image capturing lens  105  to acquire clear images of human body and face. 
         [0029]    The lighting unit  20  is installed within a preset distance of the capturing unit  10 . The lamps ( 201 ,  202 ,  203 ,  204 ,  205 ) are respectively installed within the preset distance of the image capturing lenses ( 101 ,  102 , 103 ,  104 ,  105 ). The first lamp  201  is installed within the preset distance of the first image capturing lens  101 . The second lamp  202  is installed within the preset distance of the second image capturing lens  102 . The third lamp  203  is installed within the preset distance of the third image capturing lens  103 . The fourth lamp  204  is installed within the preset distance of the fourth image capturing lens  104 . The fifth lamp  205  is installed within the preset distance of the fifth image capturing lens  105 . 
         [0030]    The preset distance (for example, 30 cm) ensures that the light emitted by the lighting unit  20  does not affect the picture quality acquired by the capturing unit  10 . 
         [0031]    The processing unit  30  obtains the image information from the capturing unit  10 . The processing unit  30  edits the image information as a singer MV image and displays the singer MV image on the second display screen  602 . The network unit  40  stores the singer MV image edited by the processing unit  30 . 
         [0032]    The network unit  40  can communicate with a portable communication device. 
         [0033]      FIG. 4  illustrates that the network unit  40  comprises a communication module  401  and a storage module  402 . 
         [0034]    The singer  200  can wirelessly communicate with the communication module  401  of the network unit  40  through a portable communication device. The portable communication device may be a smart phone or a tablet computer. The portable communication device downloads the singer MV image stored in the storage module  402 . 
         [0035]    In order to further protect the privacy of the user, the network unit  40  may also automatically delete data stored in the storage module  402  when turned on or off or when restarted. 
         [0036]      FIG. 5  illustrates that the background canvas  50  comprises a first canvas  503  in the upper half portion and a second canvas  504  in the lower half portion. The first canvas  503  adopts a first color, and the second canvas  504  adopts a second color. 
         [0037]    The color of the first canvas  503  is green. The color of the second canvas  504  is blue. 
         [0038]    The background canvas  50  further comprises a first spool  501  and a second spool  502 . 
         [0039]    The first spool  501  is configured to roll up or unroll the first canvas  503 . The second spool  502  is configured to roll up or unroll the second canvas  504 . 
         [0040]    Both the first spool  501  and the second spool  502  are connected to a motor (not shown in figures). The motor can wirelessly communicate with the processing unit  30 . The motor drives the first spool  501  and the second spool  502  under the control of the processing unit  30 . 
         [0041]    The background canvas  50  is mounted on a wall opposite to the fifth image capturing lens  105 . When the singer  200  stands in front of the background canvas  50 , the fifth image capturing lens  105  is capable of capturing the image of the singer  200  including the image of the background canvas  50 . 
         [0042]    The processing unit  30  can switch the background color of the background canvas  50  according to the clothing color of the singer  200 . For example, when the capturing unit  10  acquires the clothing color of the singer  200  as green or tending to be green, the processing unit  30  controls the motor to drive the first spool  501  to roll up the first canvas  503 . The second canvas  504  is unrolled, thus the background color of the background canvas  50  is adjusted to blue. 
         [0043]    When the capturing unit  10  acquires the clothing color of the singer  200  as blue or tending to be blue, the processing unit  30  controls the motor to drive the second spool  502  to roll up the second canvas  504 . The first canvas  503  is unrolled, thus the color of the background canvas  50  is adjusted to green. 
         [0044]      FIG. 6  illustrates that the microphone  70  comprises a switch  701 , a dust cover  702 , and a light emitting ring  703 . The light emitting ring  703  is installed above the switch  701  and below the dust cover  702 . The light emitting ring  703  is configured to position the microphone  70  and to determine the number of singers. 
         [0045]    When the switch  701  is turned on, the light emitting ring  703  emits red light. 
         [0046]      FIGS. 8 and 9  illustrates that the processing unit  30  recognizes the human face of the singer  200  and further extracts a target template  80  of the face of the singer  200 . 
         [0047]      FIG. 8  illustrates a flow diagram of an embodiment of the present disclosure of an image production method. A flowchart is presented in accordance with an example embodiment which is being thus illustrated. The example method is provided by way of example, as there are a variety of ways to carry out the method. The method described below can be carried out using the configurations illustrated in  FIG. 1 , for example, and various elements of these figures are referenced in explaining example method. Blocks shown in  FIG. 8  represents one or more processes, methods, or subroutines, carried out in the test method. Furthermore, the illustrated order of blocks is by example only and the order of the blocks can change. Additional blocks may be added or fewer blocks may be utilized, without departing from this disclosure. The method can begin at block  51 . 
         [0048]    At block  51 , the fifth image capturing lens  105  and the fifth lamp  205  are turned on. The first display screen  601  displays an MV image screen, and the second display screen  602  displays a video screen including the singer  200 , collected by the fifth image capturing lens  105 . 
         [0049]    The first display screen  601  may also display a menu. The singer  200  can select a song through the menu. When the singer  200  is selecting the song, the processing unit  30  sends a radio control signal to control the fifth image capturing lens  105  and the fifth lamp  205  to be turned on. After the singer  200  has selected the song, the first display screen  601  displays the MV image screen corresponding to the song selected by the singer  200 . 
         [0050]    At block  52 , the processing unit  30  adjusts the current color of the background canvas  50  so the current color of the background canvas  50  is different from the clothing color of the singer  200 . 
         [0051]    The fifth image capturing lens  105  acquires the image information which includes the singer  200  and the background canvas  50 , and transmits the image information to the processing unit  30 . The processing unit  30  determines the color of the clothes of the singer  200  by analyzing the image information to further adjust the current color of the background canvas  50 . 
         [0052]    The processing unit  30  first determines the color at the corner (such as upper left corner, or lower right corner) of the image to determine the current color of the background canvas  50 . The processing unit  30  subtracts each pixel value of the image from the pixel value of the current color of the background canvas  50 , and then performs connectivity process. Finally, the number of holes in the image after the connectivity process is determined. 
         [0053]    If the number of holes is less than a threshold value N, the color of the clothes of the singer  200  is determined to be the same as the current color of the background canvas  50 . The processing unit  30  controls the background canvas  50  to switch the current color of the canvas. For example, when green is the current color of the background canvas  50  and of the clothes of the singer  200 , the processing unit  30  controls the background canvas  50  to switch to blue. When blue is the current color of the background canvas  50  and of the clothes of the singer  200 , the processing unit  30  controls the background canvas  50  to switch to green. 
         [0054]    At block  53 , the number of microphones  70  is determined. 
         [0055]    The processing unit  30  determines the number of microphones  70  by detecting the amount of light emitted by the light emitting ring  703 . 
         [0056]    At block  54 , the target template  80  is used for extracting a human face of the singer. The target template  80  of the face of the singer  200  is shown in  FIG. 7 . 
         [0057]    At block  55 , determining whether the user has established a folder. 
         [0058]    If the user has set up a folder in the network unit  40 , block  56  is implemented, otherwise the process returns to block  55 . The folder is configured for storing the singer MV image. 
         [0059]    At block  56 , the processing unit  30  controls the first to fourth image capturing lenses ( 101 ,  102 ,  103 ,  104 ) and the first to fourth lamps ( 201 ,  202 ,  203 ,  204 ) to be turned on. The first display screen  601  displays the MV image screen. 
         [0060]    The processing unit  30  transmits radio control signals to control all of the first to fourth image capturing lenses ( 101 ,  102 ,  103 ,  104 ) and the first to fourth lamps ( 201 ,  202 ,  203 ,  204 ) to be turned on. 
         [0061]    At block  57 , the processing unit  30  tracks the face of the singer  200  according to the extracted target template  80 , and also the microphone  70 . The distance between the geometric center of the human face of the singer  200  and the geometric center of the light emitting ring  703  is determined. 
         [0062]    The processing unit  30  controls the scaling of the image on the second display screen  602  according to the distance. 
         [0063]    When the distance between the geometric center of the human face of the singer  200  and the geometric center of the light emitting ring  703  is less than or equal to a first preset distance, the image on the second display screen  602  is enlarged and displayed around the face region of the singer  200 . The smaller the distance between the geometric center of the human face of the singer  200  and the geometric center of the microphone  70 , the greater is the amount of the image on the second display screen  602  placed around the face region of the singer  200 . 
         [0064]    When the distance between the geometric center of the human face of the singer  200  and the geometric center of the light emitting ring  703  is larger than the first preset distance and smaller than the second preset distance, the image on the second display screen  602  is not enlarged in the display. That is, a half-body image of the singer holding the smart microphone  70  is displayed on the second display screen  602 . 
         [0065]    When the distance between the geometric center of the human face of the singer  200  and the geometric center of the light emitting ring  703  is equal to or greater than the second preset distance, the image on the second display screen  602  is displayed in a reduced size around the face region of the singer  200 . That is, a picture of the whole person of the singer  200  is displayed on the second display screen  602 . 
         [0066]    The processing unit  30  also selects different conversion effects according to the conversion rate of the song tunes sung by the singer  200 . 
         [0067]    The processing unit  30  samples the voices of the singer  200 . 
         [0068]    If the singer&#39;s singing voice frequency is faster and the amplitude changes only a little, the singer  200  is the rap rhythm, and the image on the second display screen  602  is displayed in a pan. 
         [0069]    If the singer  200 &#39;s singing voice frequency is slower and the amplitude changes only a little, the singer  200  is tending to end. The processing synthesizes the image acquired by fifth image capturing lens  105  and the images acquired by the first to fourth image capturing lenses ( 101 ,  102 ,  103 ,  104 ). 
         [0070]    If the singer  200 &#39;s singing voice frequency is slower and the amplitude changes only a little, the RGB value and the chroma of the image on the second display screen  602  can be adjusted accordingly. 
         [0071]    At block  58 , the processing unit extracts the lyrics in the MV image, and synthesizes the lyrics and the image including the singer  200  into a singer MV image to be displayed on the second display screen  602 . 
         [0072]    The MV image is displayed on the first display screen  601 , and the image including the singer is acquired by the fifth image capturing lens  105 . 
         [0073]    At block  59 , the processing unit determines when the song is ended. 
         [0074]    The end of the song is determined by the countdown of the MV image in the first display screen  601 . If the song is ended, block  510  is implemented, otherwise the process returns to block  59 . 
         [0075]    At block  510 , the processing unit  30  creates a synthesized singer MV image and stores it in the network unit  40 . 
         [0076]      FIG. 10  illustrates a flow diagram of an embodiment of determining the number of microphones. 
         [0077]    At block  71 , the singer  200  activates the microphone  70 . 
         [0078]    When the singer  200  activates the microphone  70  to start singing, the microphone  70  is lifted to the chest position and the glowing ring  703  of the microphone  70  is not covered. 
         [0079]    At block  72 , the fifth image capturing lens  105  acquires the image including the singer  200  and transmits the acquired image to the processing unit  30 . 
         [0080]    At block  73 , the processing unit  30  extracts a frame from the images acquired by the fifth image capturing lens  105  and performs histogram statistical processing on the extracted one frame image. 
         [0081]    The processing unit  30  receives the fifth image capturing lens  105  to acquire the image including a singer, and extracts a frame from the images according to a preset extraction rule. The extraction rule can be a frame at a predetermined time or a frame at a predetermined position within all the images. 
         [0082]    At block  74 , the processing unit  30  carries out binary processing and morphological operation on a frame after histogram statistic processing. 
         [0083]    The binary processing is performed by setting a red pixel of the image, after one histogram statistic processing, to 1 and setting a non-red pixel to 0. The morphological operation is performed on the binarized image. 
         [0084]    At block  75 , the processing unit  30  determines the number of microphones  70 . 
         [0085]    The processing unit  30  counts the number of red pixel blocks in the image, and the number of microphones  70  can be obtained. For example, if the number of red pixel blocks in the image is 1, it can be determined that the number of the microphones  70  is only 1. 
         [0086]      FIG. 11  illustrates a flow diagram of an embodiment of extracting the target template for the face of the singer  200  in the method. 
         [0087]    At block  81 , the processing unit  30  extracts a frame from the images acquired by the fifth image capturing lens  105  and performs histogram statistical processing on the extracted frame. 
         [0088]    The processing unit  30  receives signals from the fifth image capturing lens  105  to acquire the image including the singer  200 , and extracts a frame from the images according to a preset extraction rule. The extraction rule can be a frame at a predetermined time or a predetermined position. 
         [0089]    At block  82 , the processing unit  30  converts the color space of the extracted frame. 
         [0090]    The processing unit  30  converts the color space of the image from the RGB space model to the YCrCb model. The conversion formula from RGB color space to YCrCb color space is as follows: 
         [0000]        Y= 0.2990* R+ 0.5780* G+ 0.1140* B+ 0. 
         [0000]        Cr= 0.5000* R− 0.4187* G− 0.0813* B+ 128. 
         [0000]        Cb=− 0.1687* R− 0.3313* G+ 0.5000* B+ 128. 
         [0091]    At block  83 , the processing unit  30  performs a binary process and a morphological operation on a frame after converting the color space. 
         [0092]    Specifically, the Cr component in the interval [140, 160] is extracted, and the Cr component in the interval is binarized to 1. All Cr components other than the interval are binarized to 0, and the binarized image is denoised and morphologically processed. 
         [0093]    At block  84 , the processing unit  30  determines the number of the singers  200 . 
         [0094]    The processing unit  30  counts the number of pixel groups in the image after morphological operations, and the number of pixel groups represents the number of singers  200 . 
         [0095]    At block  85 , the target template  80  for extracting the human face of the singer  200  is stored. 
         [0096]    Each pixel group in the image is projected in the X-axis and Y-axis to get the smallest face of the external rectangle.  FIG. 7  shows this in the rectangular box. 
         [0097]    A fixed-size pixel block in the middle of the minimum circumscribed rectangle is selected as the target template  80 . The X-axis refers to a horizontal direction, and the Y-axis refers to a vertical direction. 
         [0098]      FIGS. 12 and 13  illustrates that flow diagram of an embodiment of a method for a singer singing alone. 
         [0099]    At block  910 , the processing unit controls the first to fourth image capturing lenses and turns on only one microphone  70 . 
         [0100]    At block  911 , the processing unit  30  tracks the microphone  70 . The image of the light emitting ring  703  is collected through the four image capturing lenses. The microphone  70  after activation can be tracked and positioned. 
         [0101]    At block  912 , the processing unit determines which image capture lens or lenses that can acquire an image of face of the singer  200 . 
         [0102]    At block  913 , the processing unit  30  searches the face of the singer  200  using the stored object template  80 . 
         [0103]    At block  914 , the processing unit  30  projects the matched human face in the horizontal and vertical directions, thereby obtaining the geometric center of the human face of the singer  200 . At the same time, the processing unit  30  captures the image with the largest human face area of the singer as the original image of the subsequent processing. 
         [0104]    At block  915 , the processing unit  30  calculates a distance between the geometric center of the human face geometry of the singer and the light emitting ring  703  of the microphone  703 , and controls the scaling of the original image according to the distance. 
         [0105]    At block  916 , the processing unit  30  switches the images displayed on the second display screen  602  according to the rotation of the human face of the singer  200 . 
         [0106]    The processing unit  30  controls the special effects displayed on the second display screen  602  according to the speed at which the singer&#39;s head turns. 
         [0107]    When the singer&#39;s head rotation speed is less than or equal to a first speed value, it indicates the singer&#39;s head rotation is slower, and the use of fade effect makes the screen interface smoother. 
         [0108]    When the singer&#39;s head rotation speed is more than a first speed value and less than a second speed value, the processing unit  30  controls the screen to use the special effects. 
         [0109]    When the singer&#39;s head rotation speed is more than the second speed value, the processing unit  30  controls the display to use flight effect to switch special effects rapidly. 
         [0110]    At block  917 , the processing unit  30  controls the image displayed on the second display screen  602  according to the voice of the singer  200 . 
         [0111]    The processing unit  30  also selects different conversion effects according to the conversion rate of the song tunes sung by the singer  200 . 
         [0112]    The processing unit  30  samples the voice of the singer  200 . 
         [0113]    If the singer&#39;s singing voice frequency is faster and the amplitude changes only a little, the singer is singing rap rhythm, and the image on the second display screen  602  is displayed in a pan. 
         [0114]    If the singer  200 &#39;s singing voice frequency is slower and the amplitude changes only a little, the singer  200  is tending to end. The processing synthesizes the image acquired by fifth image capturing lens  105  and the images acquired by the first to fourth video acquisition lenses ( 101 ,  102 ,  103 ,  104 ). 
         [0115]    If the singer&#39;s singing voice frequency is slower and the amplitude changes a lot, the RGB value and the chroma of the image on the second display screen  602  can be adjusted accordingly. 
         [0116]    At block  918 , the processing unit extracts the lyrics in the MV image, and synthesizes the lyrics and the image, including that of the singer  200 , into a singer MV image to be displayed on the second display screen  602 . 
         [0117]    The MV image is displayed on the first display screen  601 , and the image including the singer  200  is acquired by the fifth image capturing lens  105 . 
         [0118]    At block  919 , the processing unit  30  creates a synthesized singer MV image and stores it in the network unit  40  when the song is ended. 
         [0119]    The ending of the song is determined by the countdown of the MV image in the first display screen  601 . 
         [0120]      FIGS. 14 and 15  illustrates a flow diagram of an embodiment of a method for two people or more singing together. 
         [0121]    At block  1010 , the processing unit controls the first to fourth image capturing lenses and two microphones  70  to be turned on. 
         [0122]    In the case of two-people singing, two microphones  70  need to be activated. 
         [0123]    At block  1011 , the processing unit  30  tracks the microphone  70 . The image of the light emitting ring  703  is collected through four image capturing lenses. 
         [0124]    At block  1012 , the processing unit  30  determines which image capture lenses can acquire an image of the singer&#39;s face. 
         [0125]    At block  1013 , the processing unit  30  searches the singer&#39;s face using the stored object template  80 . 
         [0126]    At block  1014 , the processing unit  30  projects the matched human face in the horizontal and vertical directions, thereby obtaining the geometric center of the human face of the singer. At the same time, the processing unit  30  captures the image with the largest human face area of the singer as the original image of the subsequent processing. 
         [0127]    At block  1015 , when parts of the faces of the two singers having the largest image area are located in different image capture lenses, the display on the second display screen  602  may be divided equally into two parts. 
         [0128]    At block  1016 , the processing unit  30  calculates a distance between the geometric center of the human face geometry of the singer and the light emitting ring  703  of the microphone  70 , and controls the scaling of the original image according to the distance. 
         [0129]    When the distance between the geometric center of the human face of the singer and the geometric center of the light emitting ring  703  is less than or equal to a first preset distance, the image on the second display screen  602  is enlarged and centred around the singer&#39;s face region. The smaller the distance between the geometric center of the human face of the singer and the geometric center of the microphone  70 , the greater is the amount of the image on the second display screen  602  around the singer&#39;s face region. 
         [0130]    When the distance between the geometric center of the human face of the singer and the geometric center of the light emitting ring  703  is larger than the first preset distance and smaller than the second preset distance, the image on the second display screen  602  is not enlarged in the display. That is, a half-body image of the singer holding the smart microphone  70  is displayed on the second display screen  602 . 
         [0131]    When the distance between the geometric center of the human face of the singer and the geometric center of the light emitting ring  703  is equal to or greater than the second preset distance, the image on the second display screen  602  is displayed in a reduced size around the singer&#39;s face region. That is, a picture of the whole person of the singer is displayed on the second display screen  602 . 
         [0132]    At block  1017 , the processing unit  30  switches the image screen displayed on the second display screen  602  according to the rotation of the face of the singer. 
         [0133]    The processing unit  30  controls the special effects displayed on the second display screen  602  according to the speed at which the singer&#39;s head turns. 
         [0134]    When the singer&#39;s head rotation speed is less than or equal to a first speed value, it indicates that the singer&#39;s head rotation is slower, and the use of fade effect will make the screen interface smoother. 
         [0135]    When the singer&#39;s head rotation speed is more than the first speed value and less than a second speed value, the processing unit  30  controls the screen to use the special effects. 
         [0136]    When the singer&#39;s head rotation speed is more than the second speed value, the processing unit  30  controls the display to use the flight effect, to switch between special effects rapidly. 
         [0137]    At block  1018 , the processing unit  30  controls the image displayed on the second display screen  602  according to the voice of the singer. 
         [0138]    The processing unit  30  also selects different conversion effects according to the conversion rate of the song tunes sung by the singer. 
         [0139]    The processing unit  30  samples the voices of the singer  200 . 
         [0140]    If the singer&#39;s singing voice frequency is faster and the amplitude changes only a little, the singer is singing rap rhythm, and the image on the second display screen  602  is displayed in a pan. 
         [0141]    If the singer&#39;s singing voice frequency is slower, and the amplitude changes only a little, the singer is tending to end. The processing synthesizes the image acquired by fifth image capturing lens  105  and the images acquired by the first to fourth image capturing lenses ( 101 ,  102 ,  103 ,  104 ). 
         [0142]    If the singer&#39;s singing voice frequency is slower and the amplitude changes a lot, the RGB value and the chroma of the image on the second display screen  602  can be adjusted accordingly. 
         [0143]    At block  1019 , the processing unit extracts the lyrics of the MV image, and synthesizes the lyrics and the image including the image of the singer into a singer MV image to be displayed on the second display screen  602 . 
         [0144]    The MV image is displayed on the first display screen  601 , and the image including the singer is acquired by the fifth image capturing lens  105 . 
         [0145]    At block  1020 , the processing unit  30  creates a synthesized singer MV image and stores it in the network unit  40  when the song is ended. 
         [0146]    The ending of the song is determined by the countdown of the MV image in the first display screen  601 . 
         [0147]    The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of image production system. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.