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Video significance region searching method applied to video quality evaluation

A video quality and area search technology, applied in the field of video processing, can solve the problems of not being able to detect salient areas well, not considering the importance of phase, and image saliency not being well adapted to video key frames, etc.

Inactive Publication Date: 2013-09-25
CHINA JILIANG UNIV
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AI Technical Summary

Problems solved by technology

[0015](1) Image saliency cannot be well adapted to the calculation of video key frame saliency;
[0016](2) did not take into account the importance of phase for saliency detection;
[0017] (3) In the case of complex background, the salient area cannot be detected well

Method used

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  • Video significance region searching method applied to video quality evaluation
  • Video significance region searching method applied to video quality evaluation
  • Video significance region searching method applied to video quality evaluation

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with accompanying drawing.

[0062] Such as Figure 1-8 As shown, the video salient region search method applied to video quality evaluation of the present invention, the specific steps are as follows:

[0063] Step 1: Take out the 3D related area between the key frame and its previous frame:

[0064] (1.1) Determine the key frame of the test sequence (that is, the test frame);

[0065] (1.2) Extract the brightness information of key frames of the test sequence;

[0066] (1.3) Determine the brightness information of the key frame of the test sequence and the brightness information of the 10 frames before and after, and obtain the three-dimensional relevant area ;

[0067] (1.4) Extract the luminance information of the previous frame of the key frame of the test sequence and the luminance information of the 10 frames before and after it, and obtain the three-dimensional relevant area ;

[0068] ...

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Abstract

The invention discloses a video significance region searching method applied to video quality evaluation. The method includes the following steps that a three-dimensional relevant region of a key frame and a former frame is taken out; frequency domain display of the three-dimensional region is obtained; an amplitude spectrum and a phase spectrum of a frequency domain are respectively taken out; a spectrum residual error and a phase difference are obtained; the phase difference is processed to be in a prescribed range; spatial domain display of the spectrum residual error and the phase difference is obtained; Gaussian filtering is carried out on the obtained spatial domain; a significance result map of the video key frame is obtained. Relevance of videos on time and space is considered, and a time pipeline adapted to the significance result map of the video key frame is determined according to human eye visual characteristics; meanwhile, vital functions of the amplitude spectrum and the phase spectrum of the video key frame when a significance model is set are considered; a region with a still background can be comparatively accurately removed according to the spectrum residual error and the phase difference, and key structural feathers are reserved.

Description

technical field [0001] The invention belongs to the technical field of video processing, and relates to video quality evaluation, perceptual coding, machine vision, etc., and can be used for video compression, video salient region extraction and related devices and products, and specifically relates to a video salient method for video quality evaluation. Sexual area search method. Background technique [0002] With the rapid development of the network, people's requirements for video quality are getting higher and higher, so the research significance of video quality evaluation is particularly important. How to compress the video and make it easy to transmit while maintaining or enhancing the video quality is the focus and hotspot of research in recent years. The study of video salient regions is an important part of maintaining or enhancing video quality in the process of video compression, and it is also an effective method to solve video transmission and so on. The stud...

Claims

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Application Information

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IPC IPC(8): H04N17/00G06T7/00
Inventor 殷海兵谭晶晶
Owner CHINA JILIANG UNIV
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