| 摘要 |
The object of the invention is to convert a low-quality original image into a high-quality fractal-interpolated image. From a low-quality original image, original image blocks of nxn size, which are mutually overlapping and each centered on each pixel of the original image, are acquired. Also, similar image blocks of 2nx2n size, which are each similar to each of the original image blocks, are detected from the original image by affine transformation. The detected similar image blocks are reduced to the same size as the original image blocks, and then substituted for the original image blocks respectively. Then, overlapping portions of the substituted similar image blocks are adjusted by averaging. As a result, a high-quality fractal-interpolated image is generated.
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