Signal output device and signal output method

1. A signal output device, comprising:

a signal output unit to output a video signal based on input image data;

a storage unit to store the image data;

a detection unit to detect whether or not the number of frames included in one set of image data stored in the storage unit satisfies a predetermined number, wherein the one set of image data is a group of pictures (GOP) separated by IDR; and

a data creating unit to divide, when the number of the frames included in the one set of image data does not satisfy the predetermined number, the frames included in the one set of image data into a plurality of groups, to divide each of the frames into a plurality of local regions, to decide the local region exhibiting the largest movement amount among the plurality of local regions for each of the groups, to detect 2 frames exhibiting the largest movement amount of the decided local region for each of the groups, and to add a new frame between the 2 frames within each of the groups, and to input, to the signal output unit, the one set of image data to which the new frame has been added.

2. The signal output device according to claim 1 , wherein the new frame is created based on one frame of the 2 frames and the frame that is different from the 2 frames and is adjacent to the one frame.

3. The signal output device according to claim 1 , wherein the new frame is created based on the movement amount and a movement direction between the local region within one frame of the 2 frames and the local region within the frame that is different from the 2 frames and is adjacent to the one frame.

4. The signal output device according to claim 1 , wherein:

the image data comprises a moving image; and

the frame included in the one set of image data is set as a minimum unit structure that forms the moving image.

5. A signal output method of causing a computer to execute:

detecting whether or not the number of frames included in one set of image data stored in a storage unit that stores the image data satisfies a predetermined number, wherein the one set of image data is a group of pictures (GOP) separated by IDR;

dividing, when the number of the frames included in the one set of image data does not satisfy the predetermined number, the frames included in the one set of image data into a plurality of groups;

dividing each of the frames into a plurality of local regions;

deciding the local region exhibiting the largest movement amount among the plurality of local regions for each of the groups;

detecting 2 frames exhibiting the largest movement amount of the decided local region for each of the groups;

adding a new frame between the 2 frames within each of the groups; and

outputting the video signal based on the one set of image data to which the new frame has been added.

6. The signal output method according to claim 5 , wherein the new frame is created based on one frame of the 2 frames and the frame that is different from the 2 frames and is adjacent to the one frame.

7. The signal output method according to claim 5 , wherein the new frame is created based on the movement amount and a movement direction between the local region within one frame of the 2 frames and the local region within the frame that is different from the 2 frames and is adjacent to the one frame.

8. The signal output method according claim 5 , wherein:

the image data comprises a moving image; and

the frame included in the one set of image data is set as a minimum unit structure that forms the moving image.

9. A non-transitory computer readable storage medium storing a signal output program for causing a computer to execute:

detecting whether or not the number of frames included in one set of image data stored in a storage unit that stores the image data satisfies a predetermined number, wherein the one set of image data is a group of pictures (GOP) separated by IDR;

dividing, when the number of the frames included in the one set of image data does not satisfy the predetermined number, the frames included in the one set of image data into a plurality of groups;

dividing each of the frames into a plurality of local regions;

deciding the local region exhibiting the largest movement amount among the plurality of local regions for each of the groups;

detecting 2 frames exhibiting the largest movement amount of the decided local region for each of the groups;

adding a new frame between the 2 frames within each of the groups; and

outputting the video signal based on the one set of image data to which the new frame has been added.

10. The non-transitory computer readable storage medium storing the signal output program according to claim 9 , wherein the new frame is created based on one frame of the 2 frames and the frame that is different from the 2 frames and is adjacent to the one frame.

11. The non-transitory computer readable storage medium storing the signal output program according to claim 9 , wherein the new frame is created based on the movement amount and a movement direction between the local region within one frame of the 2 frames and the local region within the frame that is different from the 2 frames and is adjacent to the one frame.

12. The non-transitory computer readable storage medium storing the signal output program according to claim 9 , wherein:

the image data comprises a moving image; and

the frame included in the one set of image data is set as a minimum unit structure that forms the moving image.