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Method for calculating coding distortion degree and coding mode control and system thereof

A coding mode and coding distortion technology, which is applied in the field of video coding and processing, can solve problems such as data path delay, and achieve the effects of reducing delay, improving prediction efficiency, and improving accuracy

Active Publication Date: 2016-10-19
HANGZHOU HIKVISION DIGITAL TECH +1
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Problems solved by technology

[0021] The purpose of the present invention is to provide a method and system for calculating encoding distortion and encoding mode control, which solves the problem of serious data path delay in the traditional SSD encoding mode control strategy

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  • Method for calculating coding distortion degree and coding mode control and system thereof
  • Method for calculating coding distortion degree and coding mode control and system thereof
  • Method for calculating coding distortion degree and coding mode control and system thereof

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Embodiment Construction

[0051] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0052] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0053] The first embodiment of the present invention relates to a method for calculating a coding distortion degree, figure 1 is a schematic flowchart of the method for calculating the encoding distortion degree.

[0054] Specifically, as figure 1 As shown, the method for calculating the encoding distortion degree includes the following steps: ...

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Abstract

The invention, which relates to the video coding processing field, discloses a method for calculating a coding distortion degree and a coding mode control and a system thereof. According to the invention, the method comprises: a predicted pixel value of a coding macro block in a current coding mode is obtained and a predicted residual value is calculated based on the predicted pixel value and the coding macro block pixel value; the predicted residual value is processed by quantization and inverse quantization during a coding process in a current coding mode to obtain a predicted residual value with quantization losses; and a difference spare quadratic sum of the predicted residual value and the predicted residual value with quantization losses is used as a coding distortion degree in the current coding mode. According to the invention, because the difference spare quadratic sum of the predicted residual value and the predicted residual value with quantization losses is used as the coding distortion degree, the time delay of a prediction module, a prediction residual calculation module, and a rebuilding module in a calculation passage is avoided; and a problem that a serious data passage delay phenomenon occurs when the distortion degree is calculated based on the traditional SSD coding module control strategy can be solved.

Description

technical field [0001] The invention relates to the field of video encoding and processing, in particular to a method and system for calculating encoding distortion degree and encoding mode control. Background technique [0002] In the AVC video coding standard, only the syntax structure of the coded bit stream and the structure of the decoder are defined, but there are no specific regulations on the structure and implementation mode of the encoder, that is, the encoder adopts rate-distortion optimization ( Among them, the rate-distortion optimization refers to the method of selecting the best coding mode to minimize the distortion under the condition that the bit rate is limited to R, that is, the R value cannot exceed the channel transmission rate. Select the best mode in the encoding mode (or prediction mode), and calculate its distortion and bit rate for each encoding mode, so as to calculate the encoding cost value of the encoding mode according to the distortion and bi...

Claims

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Application Information

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IPC IPC(8): H04N19/103H04N19/147H04N19/625
Inventor 章旭东陈晓春钱学锋徐宁
Owner HANGZHOU HIKVISION DIGITAL TECH
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