Camera apparatus having an auto-tracking function
A camera apparatus which makes it possible to perform additional camera control during automatic tracking operation within a range in which the automatic tracking operation can be performed without any trouble. A tracking method-calculating section detects a tracking target through analysis of a picked-up image and calculates first camera control parameters for tracking the tracking target. A camera control request input section obtains second camera control parameters from a camera control request accepted from outside the camera apparatus. A camera control method-calculating section calculates third camera control parameters from the first camera control parameters and the second camera control parameters. Further, a camera control section performs camera control according to the third camera control parameters.
1. A camera apparatus comprising:
an image pickup section configured to obtain a video image;
a tracking section configured to track a target in the video image by analyzing the video image, when the target moves in the video image;
a receiving section configured to receive a camera control request;
a cut-out area-determining section configured to determine a first cut-out area corresponding to the target and a second cut-out area corresponding to the camera control request, to move the first cut-out area according to movement of the target in the video image, and to move the second cut-out area from a position determined based on the camera control request to keep a relative positional relationship between the first and second cut-out areas so that a distance between the first and second cutout areas after the target tracked by the tracking section moves is maintained the same as before the target moves in the video image; and
an image cutting section configured to cut out a first partial image of the first cut-out area and a second partial image of the second cut-out area, respectively, from the video image, and to output the first and second partial images.
2. The camera apparatus according to claim 1 , further comprising a cut-out area output section configured to output to a display device a graphic user interface for displaying a relative position or size of each of the first cut-out area and the second cut-out area with respect to the video image.
3. The camera apparatus according to claim 1 , wherein the size of the second cut-out area changes according to change in the size of the first cut-out area generated according to the movement of the target.
4. The camera apparatus according to claim 1 , wherein the second cut-out area is moved with the movement of the first cut-out area to keep a horizontal distance between the first and second cut-out areas and a vertical distance between the first and second cut-out areas the same as before the target moves.
5. A method of controlling a camera apparatus having an image pickup section, an image receiving section, and a controller, the method comprising:
an image obtaining step of obtaining a video image via the image pickup section;
a tracking step of tracking a target in the video image by analyzing the video image with the controller, when the target moves in the video image;
a receiving step of receiving a camera control request via the receiving section;
a cut-out area-determining step of determining a first cut-out area corresponding to the target and a second cut-out area corresponding to the camera control request with the controller, moving the first cut-out area according to movement of the target in the video image, and moving the second cut-out area from a position determined based on the camera control request to keep a relative positional relationship between the first and second cut-out areas so that a distance between the first and second cutout areas after the target tracked by the tracking step moves is maintained the same as before the target moves in the video image; and
an image cutting step of cutting out a first partial image of the first cut-out area and a second partial image of the second cut-out area, respectively, from the video image, and outputting the first and second partial images with the controller.
6. The method according to claim 5 , further comprising a cut-out area output step of outputting to a display device a graphic user interface for displaying a relative position or size of each of the first cut-out area and the second cut-out area with respect to the video image.
7. The method according to claim 5 , wherein the size of the second cut-out area changes according to a change in the size of the first cut-out area generated according to the movement of the target.
8. The method according to claim 5 , wherein the second cut-out area is moved with the movement of the first cut-out area to keep a horizontal distance between the first and second cut-out areas and a vertical distance between the first and second cut-out areas the same as before the target moves.
9. A non-transitory computer-readable storage medium storing a computer program executable by a camera apparatus having an image pickup section, an image receiving section, and a controller, for controlling tracking of a target in a video image captured by the image pickup section, the computer program comprising:
an image obtaining code configured to obtain a video image from the image pickup section;
a tracking code configured to track the target in the video image by analyzing the video image, when the target moves in the video image;
a receiving code configured to receive a camera control request via the receiving section;
a cut-out area-determining code configured to determine a first cut-out area corresponding to the target and a second cut-out area corresponding to the camera control request, to move the first cut-out area according to movement of the target in the video image, and to move the second cut-out area from a position determined based on the camera control request to keep a relative positional relationship between the first and second cut-out areas so that a distance between the first and second cutout areas after the target tracked by the tracking code moves is maintained the same as before the target moves in the video image; and
an image cutting code configured to cut out a first partial image of the first cut-out area and a second partial image of the second cut-out area, respectively, from the video image, and to output the first and second partial images.
10. The non-transitory computer-readable storage medium according to claim 9 , further comprising a cut-out area output code configured to output to a display device a graphic user interface for displaying a relative position or size of each of the first cut-out area and the second cut-out area with respect to the video image.
11. The non-transitory computer-readable storage medium according to claim 9 , wherein the size of the second cut-out area changes according to a change in the size of the first cut-out area generated according to the movement of the target.
12. The non-transitory computer-readable storage medium according to claim 9 , wherein the second cut-out area is moved with the movement of the first cut-out area to keep a horizontal distance between the first and second cut-out areas and a vertical distance between the first and second cut-out areas the same as before the target moves.