Video low-complexity coding method based on panoramic visual perception characteristics

Abstract

The invention discloses a video low-complexity coding method based on panoramic visual perception characteristics, and the method comprises the steps: employing an airspace JND threshold value as an airspace perception factor, obtaining a motion perception factor through a weighted gradient value, and obtaining an average value of space-time weighted perception factors of all pixel points in a maximum coding unit; according to a rate distortion optimization theory, calculating a Lagrange coefficient adjustment factor of the maximum coding unit based on the space-time weighted perception factor, and further obtaining a quantization parameter variation of the maximum coding unit based on the space-time weighted perception factor; meanwhile, the quantization parameter variable quantity based on the dimension weight of the maximum coding unit is calculated; calculating a new coding quantization parameter of the maximum coding unit according to the two quantization parameter variations, and applying the new coding quantization parameter to coding; the method has the advantages that the coding rate can be effectively reduced while the coding quality is ensured, so that the coding complexity can be effectively reduced, the rate distortion performance is remarkably improved, and particularly, the coding effect is better when the initial coding quantization parameter is small.

Description

A low-complexity video coding method based on panoramic visual perception characteristics technical field The present invention relates to a kind of video coding technology, especially relate to a kind of video low-level video based on panoramic visual perception characteristic. Complexity encoding method. Background technique In recent years, the panoramic video system has been widely welcomed by people for its "immersive" visual experience. There are huge application prospects in the fields of simulated reality and simulated driving. However, the current panoramic video system still has some problems in encoding. In the problem of too high coding complexity, it brings a huge challenge to the application of panoramic video system. Therefore, how to reduce the Code complexity has become an urgent technical problem to be solved in this field. Existing panoramic video low-complexity coding algorithm does not fully consider the human visual system (Human Visual Sy...

AI Technical Summary

Problems solved by technology

[0003] The existing low-complexity encoding algorithm for panoramic video does not fully consider the perception characteristics of the Human Visual System (HVS) and the characteristics of panoramic video, and it is difficult to achieve optimal encoding performance

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