| 摘要 |
PROBLEM TO BE SOLVED: To provide a video intercom device capable of emphasizing a contour of an image picked-up person without emphasizing noise.SOLUTION: A contour emphasis circuit section 17 is integrated in an entrance slave unit 1. The contour emphasis circuit section 17 includes: a Y separation BEF circuit 41 for extracting a luminance signal from a video signal outputted by a camera 16; a C separation BPF circuit 42 for extracting a chrominance signal; a secondary differentiation circuit 45 which deletes a low luminance signal from the luminance signal and then performs secondary differentiation; a Y addition circuit 46 for adding the low luminance signal to output from the secondary differentiation circuit 45; and a YC multiplexing circuit 43 for integrating the separated chrominance signal and output from the Y addition circuit 46. |
