Objective evaluation method of no-reference video quality weighted based by key frame image quality

Abstract

The invention discloses an objective evaluation method of no-reference video quality weighted by key frame image quality. The method comprises the steps of: firstly, preliminarily selecting a key frame according to a movement intensity method weighed by a human eye interest, then dividing the preliminarily selected key frame into a scene switching type key frame and a non-scene switching type key frame by correlation analysis; evaluating image quality of the non-scene switching type key frame, subdividing the non-scene switching type key frame into a content change type key frame and a quality change type key frame according to an evaluation result; finally carrying out weighted summation calculation on single frame quality by using a duration factor and a deterioration frequency factor of the quality change type key frame, and obtaining the quality evaluation result of an entire video sequence. According to the objective evaluation method, the defect that then existing evaluating technology cannot be coincided with an actual subjective feeling; computation complexity can be reduced on the premise of ensuring the evaluating performance; the objective evaluation method is suitable for automatic evaluation of various video applications of an existing network, simple in operating steps and easy to integrate.

Description

technical field [0001] The present invention relates to a video communication quality evaluation method, to be precise, relates to an existing network-oriented automatic evaluation method of video quality without reference, which is used to solve the problem of objectively evaluating the video quality of the receiving end in the absence of original video reference The complexity and accuracy of the problem belongs to the field of video communication technology. Background technique [0002] At present, video quality evaluation mainly adopts two forms: subjective evaluation and objective evaluation. The subjective evaluation method needs to be scored by some personnel according to the set rules. This method is reliable, but the operation is complicated and time-consuming, and it is not suitable for real-time monitoring applications such as wireless video services. The objective evaluation method is to automatically analyze the video quality through instruments or software to...

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Problems solved by technology

[0010] In view of this, the purpose of the present invention is to solve the defects of the existing video quality evaluation technology, such as large material / scene dependence, high algorithm complexity, poor generalization ability, and simple average of single-frame image quality. A method for selecting key frames for video quality evaluation", providing a non-reference objective video quality evaluation method based on key frame image quality weighting

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