Video device and method for capturing video with personal information

A method for capturing videos applied in a video device is provided. The video device includes a video capturing unit having a field of view and a timer. The video device includes a position sensing unit capable of sensing first position information, and an orientation sensing unit. The video device rotatingly receives second position information and personal information periodically. The method included is first to clear the timer and begin the timer again. Then, obtaining the second position information, the personal information, the first position information, and the orientation. Next, forming a coordinate system and converting the first position information and the second position information to a set of coordinates. Then, determining which person correspond to which of the portable communication devices, and associating the personal information with each person. Next, generating a composite image and a composite video comprising the composite images.

BACKGROUND

1. Technical Field

The present disclosure relates to video devices and methods for capturing videos.

2. Description of Related Art

In order to make each person recognizable in an image by people who do not know him/her or who have forgotten his/her name, the conventional way is to manually add personal information, for example names, to videos, which is time consuming and inconvenient.

DETAILED DESCRIPTION

Referring toFIGS. 1-2, a video device100in accordance with an exemplary embodiment is shown. The video device100includes a video capturing unit10used to capture videos. In the embodiment, the video device100captures a video of persons200each of whom wears a portable communication device300by turns or rotatingly communicating with the video device100in a predetermined time. The video includes images. The video device100can sense first position information of the video device100and determine which orientation the video capturing unit10should face. Each portable communication device300can sense second position information of the portable communication device300and rotatingly transmit the second position information and personal information edited according to a request from the device100to the device100. The video device100can determine whether one portable communication device300is in field of view of the video capturing unit10according to the first position information, the determined orientation, and the second position information of each portable communication device300. If a particular portable communication device300is in field of view, the video device100further determines which person200of a captured image corresponds to the portable communication device300, according to the second position information. When the video device100determines which person200corresponds to the portable communication device300, it associates the personal information from the portable communication device300with the determined person200. The video device100then generates a composite image according to the relationship between each determined person200and the associated personal information. The composite images form a composite video.

In the embodiment, the composite video includes the personal information within the field of view. Therefore, each person in the composite video can be recognized according to their personal information. As shown inFIG. 3, in the embodiment, the personal information from each portable communication device300within field of view is a name, for example, Ann, Jake, or Jason, of the person200wearing the portable communication device300.

The video device100further includes a wireless communication unit20, a position sensing unit30, an orientation sensing unit40, a timer50, a central processing unit (CPU)60, a storage unit70, and a display unit80.

The video device100communicates with the devices300through the wireless communication unit20.

The position sensing unit30is configured to sense the first position information of the video device100. In the embodiment, the position sensing unit30is a Global Position System (GPS). The first position information is the longitude and latitude of the video device100. The orientation sensing unit40is configured to sense which orientation the video capturing unit10faces. In the embodiment, the orientation sensing unit40includes and uses a compass.

The timer50can have a default setting or a user-selected setting. In the embodiment, the timer50may count up or count down.

The CPU60includes a time control module610, an obtaining module620, a coordinate processing module630, a determining module640, an associating module650, and a composing module660.

The time control module610is configured to begin the timer50when the video capturing unit10begins to capture a video, and clear the timer50and begin the timer50again when the time of the timer50reaches a predetermined time.

The obtaining module620is configured to obtain the second position information of the portable communication device300and the personal information through the wireless communication unit20, the first position information from the position sensing unit30, and the orientation from the orientation sensing unit40when the time of the timer50reaches the predetermined time.

The coordinate processing module630is configured to form a coordinate system according to the first position information and the orientation, and convert the first position information and the second position information of each portable communication device300into a set of coordinates according to the coordinate system. In the embodiment, the coordinate system is the Descartes coordinate system. The coordinate origin is the intersection of the position sensing unit30and the orientation, that is, the first position information is converted to the coordinate (X=0, Y=0).

The determining module640is configured to determine whether a particular portable communication device300is in the field of view of the video device100according to the Descartes coordinate system and the coordinates of the portable communication device300.

If a portable communication device300is in the field of view of the video device100, the associating module650determines which person of a captured image corresponds to the portable communication device300according to its second position information, and associates the personal information from the portable communication device300with the determined person200.

The composing module660is configured to generate a composite image according to the relationship between each determined person200and the personal information associated with the determined person200and generates a composite video including the composite images after the video device stops capturing the video. The composite video is then stored in the storage unit70.

The display unit80is configured to display the composite video.

FIG. 4is a schematic view illustrating how to determine whether a portable communication device300is in the field of view of the video device100in each image. InFIG. 4, there are people illustrated by A, B, C, D, E, F, and G. After capturing the video of the field of view area “2a”, the video device100cyclically sends a request to the portable communication devices300worn by the people A, B, C, D, E, F, and G at the predetermined time. Each portable communication device300then cyclically transmits the second position information and edits personal information corresponding to the request to the video device100in the predetermined time. The video device100determines the Descartes coordinate system and converts the first position information and the second position information of each video device100into a set of coordinates. The video device100then determines the angle between each portable communication device300and the video capturing unit10according to the Descartes coordinate system and then converts a set of coordinates. If the angle of a particular portable communication device300and position sensing unit30is less than “a”, the video device100determines the portable communication device300namely the person wearing the portable communication device300is in the field of view. In the embodiment, the angle “b”, “c” and “d” are less than “a”, that is, the people C, D, and E are within the field of view.

FIG. 5is a flowchart of a method for capturing a video in accordance with an exemplary embodiment.

In step S50, the video device begins to capture a video of the persons200each wearing a portable communication device300.

In step S51, the time controlling module begins the timer, clears the timer, and begins the timer again after reaching a predetermined time.

In step S52, the obtaining module620obtains the first position information, the orientation, the second position information of each portable communication device300and the personal information edited corresponding to the request from the video device100when the time of the timer50reaches the predetermined time.

In step S53, the coordinate processing module630forms a coordinate system according to the first position information and the orientation, and converts the first position information and the second position information of each portable communication device300to the set of coordinates according to the coordinate system.

In step S54, the determining module640determines which of the portable communication devices300are in the field of view of the video capturing unit10according to the coordinate system and the set of coordinates of the portable communication device300.

In step S55, the associating module650determines which person200of a captured image corresponds to which portable communication device300according to the set of coordinates of the portable communication device300, and associates the personal information with the determined person200.

In step S56, the composing module660generates a composite image according to relationship between each determined person200and the personal information associated with the determined person200.

In step S57, after the video device100stops capturing the video, the composing module660generates a composite video including the composite images.

In step S58, the display unit80displays the composite video.