Viewpoint synthetic method, device and encoder during depth information encoding

Abstract

A view synthesis method and apparatus when encoding depth information and an encoder are provided. The method includes: judging whether each line of pixels of a depth image encoding unit leads to variations of the pixel value of the synthesized view during the view synthesis when encoding the depth information; if judging that a certain line of pixels of the depth image encoding unit does not lead to the variations of the pixel value of the synthesized view, skipping the line during the view synthesis and proceeding the view synthesis without the line of pixels. The apparatus includes: a judging unit for judging whether each line of pixels of the depth image encoding unit leads to the variations of the pixel value of the synthesized view during the view synthesis when encoding the depth information; a view synthesis processing unit for, if judging that a certain line of pixels of the depth image encoding unit does not lead to the variations of the pixel value of the synthesized view, skipping the line during the view synthesis and proceeding the view synthesis without the line of pixels. The technical solutions mentioned above can reduce the time complexity of the encoding end while ensuring the encoding performance.

Description

technical field [0001] The present invention relates to the field of multimedia technology, in particular to a viewpoint synthesis method, device and encoder when encoding depth information. Background technique [0002] In the 98th MPEG (Moving Pictures Experts Group, Motion Picture Experts Group) meeting, HHI (Heinrich Hertz Institute, Rhein-Hertz Institute) proposed a rate-distortion optimization algorithm based on synthetic viewpoint distortion information in deep image compression . In this algorithm, the distortion of the depth image is measured by the distortion change of the synthetic viewpoint, which can be expressed as: [0003] ΔD = D ~ - D = Σ ( x , y ) ∈ l [ ...

AI Technical Summary

Problems solved by technology

[0010] From the above process, it can be seen that the existing technical solutions need to continuously draw and update the viewpoint during the encoding process, which requires a large time complexity (time overhead)

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