| 摘要 |
In an interpolation pixel generation circuit, M pairs and N pairs (N<M) of correlation judgment pixels are generated from pixels on at least two scanning lines which adjoin a pixel to be interpolated, using one pair of pixels being symmetric with respect to the pixel to be interpolated. A correlation value between pixel values of a correlation judgment pair is calculated in each M pairs and N pairs of correlation judgment pixels. Correlation judging pairs having high correlation are selected, and correlation direction is judged. Based on the both judged correlation direction of M pairs and the N pairs of correlation judgment pixels, an interpolation priority direction is determined from a slant priority direction, a vertical priority direction, and a vertical top priority direction. An interpolation pixel is generated, which pixel value is an average of pixel values of the selected correlation judgment pixels being in the determined direction.
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