Image and digital video coding and decoding methods
A technology of digital video and encoding method, applied in the field of image and digital video encoding and decoding, can solve problems such as poor scalability and decoder mismatch, and achieve the effect of high compression performance and good scalability
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[0059] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0060] attached figure 1 It is a structural block diagram of a typical image and digital video data encoding and decoding system, wherein the dotted line box represents the integer transformation method adopted in the prior art, and the solid line box represents the integer transformation method adopted in the present invention. To encode using the above device, follow the steps below:
[0061] Step 1, the data input device inputs image or digital video data;
[0062] Step 2, the two-dimensional forward discrete orthogonal transformation device performs two-dimensional integer discrete Tchebichef transformation on the input data according to the following method:
[0063] Step 201, divide the input image or digital video data into non-overlapping data blocks with a size of N×N, N represents the number of pixels in the length or width direction of the ...
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