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Perceptual video coding method based on saliency and just noticeable distortion

A video coding, the smallest technology, applied in the field of perceptual video coding, can solve problems such as high video coding efficiency, achieve the effect of improving video coding efficiency and reducing video coding bit rate

Inactive Publication Date: 2014-12-17
ACAD OF BROADCASTING SCI SARFT +1
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Problems solved by technology

[0014] To sum up, the existing perceptual video coding methods usually only use one of the visual sensitivity model and the visual saliency model, and cannot take advantage of the advantages of these two models at the same time to achieve higher video coding efficiency

Method used

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  • Perceptual video coding method based on saliency and just noticeable distortion
  • Perceptual video coding method based on saliency and just noticeable distortion
  • Perceptual video coding method based on saliency and just noticeable distortion

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Embodiment Construction

[0069] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0070] A method of perceptual video coding based on saliency and minimal perceptible distortion, comprising the following steps:

[0071] Step 1. Use the saliency monitoring algorithm and the minimum perceptible distortion method to calculate the saliency value S(k,i,j) and the minimum perceptible distortion value JND(k,i,j) of the video frame image to be processed, according to the video frame The saliency value S(k,i,j) of the image adjusts the minimum perceptible distortion value JND(k,i,j) to obtain the saliency minimum perceptible distortion threshold S-JND(k,i,j), where k represents the video In the image of the kth frame of the sequence, i and j represent the horizontal and vertical coordinates of the pixel, respectively.

[0072] Such as figure 1 As shown, this step specifically includes:

[0073] Step 1.1, the video frame image is c...

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Abstract

The invention relates to a perceptual video coding method based on the saliency and just noticeable distortion and belongs to the field of video coding. The method is characterized by including calculating a saliency value and just noticeable distortion value of a video frame image to be processed; adjusting the just noticeable distortion value according to the saliency value of the video frame image, and acquiring a saliency just noticeable distortion threshold; filtering the residual in the video coding process according to the saliency just noticeable distortion threshold, and acquiring the perceptual video code on the basis of the saliency and just noticeable distortion. The method is reasonable in design, on the basis of an HEVC frame, two visual perceptual models, namely a visual attention model and a visual sensitivity model are combined to form an S-JND (saliency-just noticeable distortion) algorithm, visual redundancy of video data can be further excavated and removed, on the premise of not affecting the subjective quality, the video coding rate is reduced effectively, and the video coding efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of video coding, in particular to a perceptual video coding method based on salience and minimum perceivable distortion. Background technique [0002] With the advancement of technology and the continuous improvement of people's requirements for video quality, high-definition / ultra-high-definition video coding technology, as the basic core technology of future home theater, digital broadcast TV, network video and other services, has become the focus of the industry. At present, high-definition video coding standards mainly include H.264 / AVC, MPEG-2, AVS, etc.; for ultra-high-definition video, relevant organizations in the industry are conducting key technology research and system experiments, and the video coding standards have not yet been unified. The development of high-definition / ultra-high-definition video services has put forward new requirements for existing image and video compression technologies: t...

Claims

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Application Information

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IPC IPC(8): H04N19/154H04N19/147H04N19/176H04N19/625
Inventor 王琳王辉淇于洋李敬娜
Owner ACAD OF BROADCASTING SCI SARFT
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