| 摘要 |
The present invention enables an image signal processing that can improve color representation of an image signal converted from YCrCb 4:2:2 format to YCrCb 4:2:0 format. An image signal processing apparatus 500 includes a buffer 520 for retaining YCrCb 4:2:2 image signals captured by an image signal input 510, a frame and line recognizer 530 for determining whether the line from which the YCrCb 4:2:2 image signals are captured is a first line or a second line of an adjacent line pair based on frame and line information on the YCrCb 4:2:2 image signals captured by the image signal input 510, and a Cr and Cb data corrector 540 for, if the frame and line recognizer 530 determines that the line is the second line, reading YCrCb 4:2:2 image signals for the pixels in the first line at the same horizontal positions as the pixels in the second line from the buffer 520 and correcting Cr and Cb data on the YCrCb 4:2:2 image signals for the pixels at least in the first line of the first and second lines of the line pair based on Cr and Cb data on the captured YCrCb 4:2:2 image signals for the pixels in the second line. |
