Video coding and decoding method
A video codec, codec technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problems of hardware cost, buffer data utilization, large hardware cost, etc., to save hardware cost, effectively The effect of using
Active Publication Date: 2015-09-23
BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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However, when using this cache method, the size of the memory needs to correspond to the reference frame data in the rectangular window whose height is SRv+N-1 and the width is the current frame image width (Picture_width), which requires the use of large-capacity memory in the hardware architecture. memory, resulting in large hardware costs
[0014] It can be seen that the existing video codec method can not achieve the balance between hardware cost and cache data utilization.
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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] A video encoding and decoding method provided by an embodiment of the present invention includes: dividing the current frame image into at least two encoding and decoding areas, and the height of each encoding and decoding area is the same as the height of the current frame image; , performing encoding and decoding in a raster scanning...
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The embodiment of the invention provides a video coding and decoding method, which not only can effectively utilize cached motion searching window data and improve the data utilization rate, but also can save the hardware cost. The video coding and decoding method comprises the steps of dividing a current frame image into at least two coding and decoding areas, wherein the height of each coding and decoding area is identical to the height of the current frame image; carrying out coding and decoding according to a grating scanning mode inside each coding and decoding area; caching motion searching window data corresponding to the previous micro block line into a memory; and carrying out coding on the current micro block line by using the motion searching window data in the memory.
Description
technical field [0001] The invention relates to the field of video data encoding and decoding, in particular to a video encoding and decoding method. Background technique [0002] In the prior art, encoding and decoding of a frame of video data is usually performed in a raster scanning (raster scanning) manner. figure 1 What is shown is a schematic diagram of a video encoding and decoding method provided in the prior art. Such as figure 1 As shown, the existing codec method is as follows: first, codec sequentially from the 0th macroblock of the first row of macroblocks to the P-1th macroblock, and then start from the 0th macroblock to the P-1th macroblock of the second row The encoding and decoding of macroblocks, and so on to the last macroblock row of the current frame image. The video encoding and decoding method can be realized through the following pseudocode: [0003] For(j=0; j<(pic_h+P-1) / N; j++){ [0004] For(i=0; i<(pic_w+P-1) / N; i++){ [0005] Codec_MB(i...
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IPC IPC(8): H04N19/176H04N19/423H04N19/51
Inventor 旷开智夏昌盛
Owner BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD