Three-dimensional video depth map coding method based on just distinguishable parallax error estimation

Abstract

The invention discloses a three-dimensional video depth map coding method based on just distinguishable parallax error estimation. The method comprises the following steps: (1), inputting a frame of three-dimensional video depth map and a corresponding texture image; (2), synthesizing the texture image of a virtual view point; (3), calculating the just distinguishable error graph of the texture image of the virtual view point; (4), calculating the scope of a just distinguishable parallax error of the three-dimensional video depth map; (5), performing intraframe and interframe prediction on the three-dimensional video depth map, and selecting a prediction mode, which is provided with minimum prediction residual error energy, of the three-dimensional video depth map; (6), performing prediction residual error adjusting on the three-dimensional video depth map, and obtaining a prediction residual error block, which has a minimum variance, of the three-dimensional video depth map; and (7), encoding the three-dimensional video depth map of a current frame. The method provided by the invention, can greatly reduce the code rate of depth map coding under the condition that the invariability of the PSNR of a virtual synthesis video image is ensured and can also substantially improve the subjective quality of a virtual synthesis viewpoint at the same time.

Description

technical field [0001] The invention relates to the field of three-dimensional video coding, in particular to a three-dimensional video depth map coding method based on just identifiable parallax error estimation. Background technique [0002] In the past more than a century, the continuous improvement of human requirements for visual perception has promoted the continuous development of image and video technology, from the original black and white silent film to the digital high-definition video (HDTV) technology that is widely used today. It can be said that today's Video technology has brought people a very superior visual viewing experience. [0003] Even so, people's requirements for visual experience have not been fully met. With the continuous development of computer and information technology, people put forward higher requirements for visual experience, hoping to obtain more realistic visual effects while watching videos, that is to say, viewers pursue a "immersive...

AI Technical Summary

Problems solved by technology

Therefore, it is inappropriate to set a uniform threshold T for all pixels in the synthetic virtual view. Although DCR can make the objective distortion value (such as MSE) of all pixels in the synthetic view smaller than T, it may still produce many Severe distortions perceived by the human eye

In addition, the strategy of minimizing the residual energy adopted by the DCR method does not guarantee the optimal rate-distortion performance

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