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Residual filtering method based on pixel domain JND model

A pixel domain, JND technology, applied in image communication, digital video signal modification, electrical components, etc.

Active Publication Date: 2018-09-11
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The H.265 / HEVC video coding technology framework is mainly for spatial redundancy and time redundancy for compression coding, and the improvement of compression performance has certain limitations.

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  • Residual filtering method based on pixel domain JND model
  • Residual filtering method based on pixel domain JND model
  • Residual filtering method based on pixel domain JND model

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the examples. It must be pointed out that the following examples are only used to further illustrate the present invention and cannot be interpreted as limiting the protection scope of the present invention. Content, making some non-essential improvements and adjustments to the present invention for specific implementation shall still belong to the protection scope of the present invention.

[0023] The residual filtering method based on the pixel-domain JND model of the present invention is compared with the encoding method of the H.265 / HEVC standard test model HM16.0 as follows:

[0024] 1. Open the H.265 / HEVC test model and the H.265 / HEVC standard test model embedded with the method of the present invention at the same time, set the configuration file as encoder_intra_main.cfg, and the number of encoded frames is 100 frames, wherein the quantization of the two test models The paramete...

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Abstract

The invention provides a residual filtering method based on a pixel domain JND model. The method comprises the following steps: firstly, performing modelling in a pixel domain to obtain a JND threshold of each pixel, then, mining the correlation between the JND threshold of each pixel and the JND thresholds of neighboring pixels in a conversion unit, performing block classification on the conversion unit by using a Sobel edge detection operator to obtain a weight factor of the conversion unit, and finally, filtering the residual in combination with the spatial correlation of the JND thresholds of the pixels and the weight factor of the conversion unit. The proposed method model can be embedded in an HEVC video coding framework. The experimental results show that in the case that the subjective perceived quality of human eye does not decrease significantly, more actual distortion can be tolerated, and a certain code rate can be reduced.

Description

technical field [0001] The invention relates to video coding technical issues in the field of image communication, in particular to a residual filtering optimization method for reducing code rate based on pixel-domain JND model. Background technique [0002] In recent years, as high-definition and ultra-high-definition video applications have gradually entered people's field of vision, while continuously bringing people a better visual experience, the amount of video data is also increasing rapidly. Therefore, video compression technology has been greatly affected. challenge. In addition, various video applications are emerging with the development of network and storage technologies. Today, digital video broadcasting, mobile wireless video, remote monitoring, medical imaging, etc., have all entered people's lives. However, under the limitation of limited transmission bandwidth and certain storage capacity, the diversification of video applications and the trend of high-de...

Claims

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Application Information

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IPC IPC(8): H04N19/107H04N19/117H04N19/149H04N19/59H04N19/61H04N19/82
CPCH04N19/107H04N19/117H04N19/149H04N19/59H04N19/61H04N19/82
Inventor 何小海张斐然卿粼波熊淑华苏姗吴小强陶青川
Owner SICHUAN UNIV
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