| 摘要 |
A contour emphasizing circuit is provided with a number-of-pixels changing circuit (37) which changes the numbers of pixels of digital R, G, and B signals, a gamma correction circuit (39) which performs gamma correction on the output of the circuit (37), a Y-signal generating circuit (36) which generates luminance signals from the output of the circuit (37), an contour extracting circuit (38) which extracts contour components from the output of the circuit (36), a coefficient multiplying circuit (42) which outputs contour components for R, G, and B by multiplying the extracted contour components by coefficients Kr, Kg and kb contour adding circuit (34r), (34g), and (34b) which respectively add the outputs of the circuit (39 and 42). Thus, the contour emphasizing circuit performs contour emphasis on the digital R, G, and B signals.
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