| 摘要 |
A method and a circuit for sub-sampling pixelized image data gathered in overlapping blocks, comprising reading, line by line, from an image memory containing the pixelized image, accumulating as many lines as provided by the sub-sampling ratio in the vertical direction, using as many accumulator groups as there are blocks in the horizontal image direction and as many accumulators per group as provided by the sub-sampling ratio in the horizontal direction, and memorizing the accumulated values in as many result memories as there are accumulator groups, each result memory containing sub-sampled matrixes of a number of blocks corresponding to the number of overlapping blocks in the vertical direction.
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