Method for improving digital signal conversion performance and digital signal conversion method and device

A digital signal and performance technology, applied in the fields of digital video signal modification, image communication, electrical components, etc., can solve the problems of insufficient nuclear de-correlation, unsatisfactory transformation performance, and not good enough.
CN104244010AActive Publication Date: 2014-12-24ZHEJIANG UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2014-12-24

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Abstract

The invention discloses a method for improving digital signal conversion performance and a digital signal conversion method and device. The method for improving the digital signal conversion performance includes the steps of constructing a conversion kernel matrix A with N rows and N columns, and enabling the conversion kernel matrix A to meet the condition (a) and the condition (b) at the same time: (a)[DCT(i,j)*Factor]-2<=A(i,j)<= [DCT(i,j)*Factor]+2(b)J(A)<TH, wherein (img file='DDA00003345538500011.TIF' wi='1080'he='152' / )( / maths). According to the method for improving the digital signal conversion performance and the digital signal conversion method and device, it can be guaranteed that digital signal processing has higher conversion performance.
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Description

technical field

[0001] The invention relates to the technical field of digital signal processing, in particular to a method and device for improving digital signal conversion performance, and a digital signal conversion method and device. Background technique

[0002] As a digital signal processing method, video and image coding technology is the basis and key to the wide application of digital video and image, an important multimedia information. Under the current block-based video coding hybrid framework, video coding generally includes the following four blocks: predictive coding, transformation and quantization, entropy coding, and loop filtering. The main function of the transformation is to remove the correlation between the prediction residuals and concentrate the energy of the residuals, which is beneficial to the subsequent entropy coding and improves the efficiency of video coding as a whole.

[0003] In JPEG, MPEG-1 / 2 / 4, H.261 and other video image coding standar...

Claims

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