| 摘要 |
PROBLEM TO BE SOLVED: To effectively record compressed image data without wastes, according to the resolution of the image to be recorded. SOLUTION: The digital camera is provided with a high-frequency component detector 36, having a high-pass filter 37, a first sampling processing circuit 38A, and a second sampling processing circuit 38B. When color difference data U and V include many high-frequency components, luminance and color difference data Y, U, and V are sampled by the second sampling processing circuit 38B in accordance with the sampling frequency ratio of 4:2:2. When there are few high-frequency components of color difference data U and V, the luminance and color difference data Y, U, and V are sampled in accordance with the first sampling processing circuit 38A at a sampling frequency ratio of 4:2:0. COPYRIGHT: (C)2008,JPO&INPIT
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