Quick fractal video compression and decompression method
A video compression and fractal technology, applied in digital video signal modification, electrical components, image communication, etc., can solve the problems of slow encoding speed, large amount of calculation, difficult to meet the requirements of compression time and image quality, etc.
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[0093] The method of the present invention will be further described in detail below in conjunction with the accompanying drawings. Only the brightness component Y is taken as an example, and the compression steps of the color difference components U and V are the same as the brightness components.
[0094] The present invention proposes a fast fractal video compression and decompression method. First, block DCT transform coding is used for the initial frame, block motion estimation / compensation coding is performed for non-I frames, and sub-block fields and parent block fields are calculated. At the same time, calculate the pixel sum and pixel square sum of the block corresponding to the fractional pixel interpolation value, and then judge the pre-search restriction conditions, and use the fractional pixel block matching and improved non- The symmetrical cross-shaped multi-level hexagonal grid search algorithm is used to find the most similar matching block, and finally the coe...
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