| 摘要 |
To enable easily ascertaining whether a moving portion is in focus, a video signal having a first frame rate is obtained from a captured video signal having a second frame rate that is N times the first frame rate (N an integer greater than or equal to 2). An edge signal is detected by performing horizontal and vertical high-pass filtering for each frame of the captured video signal having the second frame rate. Then, on the basis of the edge signal of each frame, an edge signal corresponding to the each frame of the first frame rate is generated. The generated edge signal is synthesized with the video signal having the first frame rate to obtain a video signal for use in a viewfinder display. |
