Image processing apparatus and recording medium storing image processing program
View Patent ↗An image processing apparatus that includes an interlacing determination unit and a deinterlacing unit is provided. The interlacing determination unit determines whether or not a frame is an interlaced image by performing image processing on body data of the frame. An interlaced image is an image that includes a top field image and a bottom field image at different times on a timeline. If it was determined that the frame is an interlaced image, the deinterlacing unit deinterlaces the frame and generates a new frame.
1. An image processing apparatus comprising:
an interlacing determination unit configured to, by performing image processing on body data of a frame, determine whether or not the frame is an interlaced image that includes a top field image and a bottom field image at different times on a timeline; and
a deinterlacing unit configured to, in a case of a determination that the frame is an interlaced image, deinterlace the frame and generate a new frame.
2. The image processing apparatus according to claim 1 ,
wherein the interlacing determination unit is configured to determine whether or not the frame is the interlaced image by comparing the top field image and the bottom field image and determining whether or not a moving subject exists in the frame.
3. The image processing apparatus according to claim 2 ,
wherein the interlacing determination unit is configured to determine whether or not the frame is the interlaced image by determining whether or not a moving subject exists in the frame after reducing influence of a motionless subject in the frame using the body data of a plurality of frames on the timeline.
4. The image processing apparatus according to claim 2 ,
wherein the interlacing determination unit is configured to determine whether or not a group of frames on the timeline is a group of interlaced images by performing image processing on the body data of at least a portion of the frames included in the group of frames, and
in a case of a determination that the group of frames is a group of interlaced images, the deinterlacing unit is configured to deinterlace the group of frames and generate a group of new frames.
5. The image processing apparatus according to claim 2 , further comprising:
an order determination unit configured to, in a case of a determination that the frame is an interlaced image, determine a field order of the top field image and the bottom field image by performing image processing on the body data of the frame.
6. The image processing apparatus according to claim 2 ,
wherein the deinterlacing unit is configured to generate, as the new frame, a frame that corresponds to at least one of the top field image and the bottom field image.
7. The image processing apparatus according to claim 2 ,
wherein the deinterlacing unit is configured to generate, as the new frames, two frames that respectively correspond to the top field image and the bottom field image.
8. The image processing apparatus according to claim 1 ,
wherein the interlacing determination unit is configured to determine whether or not the frame is the interlaced image by determining whether or not a moving subject exists in the frame after reducing influence of a motionless subject in the frame using the body data of a plurality of frames on the timeline.
9. The image processing apparatus according to claim 8 ,
wherein the interlacing determination unit is configured to determine whether or not a group of frames on the timeline is a group of interlaced images by performing image processing on the body data of at least a portion of the frames included in the group of frames, and
in a case of a determination that the group of frames is a group of interlaced images, the deinterlacing unit is configured to deinterlace the group of frames and generate a group of new frames.
10. The image processing apparatus according to claim 8 , further comprising:
an order determination unit configured to, in a case of a determination that the frame is an interlaced image, determine a field order of the top field image and the bottom field image by performing image processing on the body data of the frame.
11. The image processing apparatus according to claim 8 ,
wherein the deinterlacing unit is configured to generate, as the new frame, a frame that corresponds to at least one of the top field image and the bottom field image.
12. The image processing apparatus according to claim 8 ,
wherein the deinterlacing unit is configured to generate, as the new frames, two frames that respectively correspond to the top field image and the bottom field image.
13. The image processing apparatus according to claim 1 ,
wherein the interlacing determination unit is configured to determine whether or not a group of frames on the timeline is a group of interlaced images by performing image processing on the body data of at least a portion of the frames included in the group of frames, and
in a case of a determination that the group of frames is a group of interlaced images, the deinterlacing unit is configured to deinterlace the group of frames and generate a group of new frames.
14. The image processing apparatus according to claim 13 , further comprising:
an order determination unit configured to, in a case of a determination that the frame is an interlaced image, determine a field order of the top field image and the bottom field image by performing image processing on the body data of the frame.
15. The image processing apparatus according to claim 1 , further comprising:
an order determination unit configured to, in a case of a determination that the frame is an interlaced image, determine a field order of the top field image and the bottom field image by performing image processing on the body data of the frame.
16. The image processing apparatus according to claim 15 ,
wherein the order determination unit is configured to compare a first difference between the top field image of a first frame on the timeline and the bottom field image of a second frame on the timeline, with a second difference between the bottom field image of the first frame and the top field image of the second frame, and determine the field order according to magnitudes of the first difference and the second difference.
17. The image processing apparatus according to claim 15 ,
wherein the deinterlacing unit is configured to generate, as the new frames, two frames that respectively correspond to the top field image and the bottom field image, and orders the two frames in accordance with the determined field order.
18. The image processing apparatus according to claim 1 ,
wherein the deinterlacing unit is configured to generate, as the new frame, a frame that corresponds to at least one of the top field image and the bottom field image.
19. The image processing apparatus according to claim 1 ,
wherein the deinterlacing unit is configured to generate, as the new frames, two frames that respectively correspond to the top field image and the bottom field image.
20. A non-transitory computer-readable recording medium storing an image processing program, the program causing a computer to execute steps of:
performing image processing on body data of a frame to determine whether or not the frame is an interlaced image that includes a top field image and a bottom field image at different times on a timeline; and
in a case of a determination that the frame is an interlaced image, deinterlacing the frame and generating a new frame.