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Video coding transforming and quantifying method and device

A technology of video coding and quantization method, which is applied in the field of video coding transformation and quantization method and device, can solve the problems of reduced operation efficiency of video coding transformation and quantization process, and transformation steps cannot be performed in parallel, so as to realize pipeline operation and improve operation efficiency Effect

Active Publication Date: 2015-04-15
BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a new method and device for video coding transformation and quantization, which solves the problem that in the prior art, the inverse transformation step after inverse quantization and the transformation step before quantization cannot be performed in parallel, resulting in the entire video coding transformation and quantization The problem that the operation efficiency of the process is reduced

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  • Video coding transforming and quantifying method and device
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  • Video coding transforming and quantifying method and device

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0023] figure 2 Shown is a schematic flow chart of a video coding transform and quantization method provided by an embodiment of the present invention. like figure 2 As shown, the video coding transform quantization method includes:

[0024] Step 201: Perform forward transformation processing on the matrix data; wherein, the forward transformation processing includes a horizontal transformation step and a vertical transformation step. Wherein when the for...

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Abstract

An embodiment of the invention provides a video coding transforming and quantifying method and device and solves the problem of low operation efficiency during video coding transforming and quantifying process of the prior art. The video coding transforming and quantifying method includes steps of subjecting matrix data to forward transformation including a horizontal forward transformation step and a vertical forward transformation step; quantifying and inversely quantifying the matrix data; inversely transforming the matrix data including a horizontal inverse transformation step and a vertical inverse transformation step, wherein the transformation step executed in the forward transformation late is the horizontal forward transformation step, the transformation step executed in the inverse transformation early is the horizontal inverse transformation step, or the transformation step executed in the forward transformation late is the vertical forward transformation step, and the transformation step executed in the inverse transformation early is the vertical inverse transformation step.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a method and device for video coding transformation and quantization. technical background [0002] figure 1 Shown is a schematic flowchart of a video coding transform quantization method provided by the prior art. like figure 1 As shown, the video coding transformation and quantization method includes four steps of transformation 1, quantization 2, inverse quantization 3 and inverse transformation 4 in sequence. Wherein the transformation 1 is to perform horizontal transformation 11 on the matrix data first, and then perform vertical transformation 12; The transformation steps in transformation 1 and inverse transformation 4 can be expressed as: Y=T×(X×T T ). Where X represents the input matrix, T is the transformation matrix, and Y represents the result matrix. The transformation step in the above formula is actually two steps, the first step is to complete Z=X×T ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/60H04N19/625
Inventor 陈小桥钟俊华
Owner BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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