A method of 8 input/output integer transformation/reverse transformation for coding processing

An integer transformation and coding technology, applied in the field of 8-input/output integer transformation/inverse transformation

Inactive Publication Date: 2007-03-21
联合信源数字音视频技术(北京)有限公司
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[0010] The technical problem to be solved by the present invention is to propose an 8-input/output integer transformation/inverse transformation method and device ...

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  • A method of 8 input/output integer transformation/reverse transformation for coding processing
  • A method of 8 input/output integer transformation/reverse transformation for coding processing
  • A method of 8 input/output integer transformation/reverse transformation for coding processing

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[0034] The integer forward transformation method and the forward transformation method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] As shown in the following formula, W can be regarded as a general formula of 8×8 integer transformation. Where z1, z2, ... z7 are integers. For an input X = (x1, x2, . . . , x8)', the transformed output Y = WX. For the inverse transformation, the transformation matrix is ​​W', that is, for the input Y=(y1, y2,...,y8)', the transformed output X=W'Y.

[0036] W = z 4 , z 4 , z 4 , z 4 , z 4 , ...

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Abstract

The invention discloses an integer transform and inverse transform of 8 inputs and outputs in code process. The method includes: receives image parameter X=(x1, x2, ...., x8) outputted by predicting model; carries on special setting to the universal transform matrix, acquires the transform matrix T; decomposes the transform matrix T, each decomposed matrix is convenient to convert the multiply operation into addition and shifting operation; carries quick calculating matrix to Y=TX using above mentioned matrix decomposing result, and acquires the result Y= (y1, y2, ...., y8) of transform, namely the frequency domain parameter, which represents the signal intensity of each frequency segment of inputting image. The invention decomposes the transform matrix into several simple matrixes with 1 or 2 power, which can be realized through addition and shifting operation, it is convenient to design hardware, reduces the hardware design cost. And the invention guarantees the high efficiency of code.

Description

technical field [0001] The present invention relates to digital image processing technology, in particular to integer transformation in image coding and decoding technology, and in particular to an 8-input / output integer transformation / inverse transformation method for coding processing. Background technique [0002] Including high-definition digital TV, high-density laser video disc, broadband network, wireless broadband multimedia communication and other industries related to information appliances, communication equipment, and multimedia equipment. The common technology is multimedia with digital video and audio codec technology as the main content. information processing technology. High-efficiency video codec technology is the key to realize high-quality, low-cost multimedia data storage and transmission. In recent years, the development of broadcasting, communication, and computer network has put forward higher and higher requirements for video coding and processing t...

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Application Information

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IPC IPC(8): H04N7/24H04N7/50H04N19/61
Inventor 高文范晓鹏吕岩马思伟
Owner 联合信源数字音视频技术(北京)有限公司
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