Upsampling method for depth video compression of three-dimensional television

Abstract

The invention relates to an upsampling method for the depth video compression of a three-dimensional television, and belongs to the field of video coding. The method comprises the following steps of: upsampling a depth video based on a color video to make a pixel point with similar color have a more similar depth value so as to ensure more accurate object edge depth value; and performing local smoothing on the reconfigured depth video to reduce noise in a synthetic three-dimensional effect. The upsampling method has the advantages that: the recovered depth video has a clearer object edge and higher local smoothing performance by using the relationship between the depth video and the color video, so that better three-dimensional visual effect can be achieved; the upsampling method is effective for various downsampling methods; and the quality of the depth video with high compression speed and low target bitrate can be well improved by the method.

Description

Technical field [0001] The invention relates to an up-sampling method for deep video compression of a three-dimensional stereo television, which belongs to the field of video coding. Background technique [0002] Stereoscopic 3D TV is a new generation of interactive media services, which brings users a new viewing experience: users can freely choose the viewpoint to watch and switch between different viewpoints at any time; 3D scenes can be obtained without glasses Experience and feel. Compared with traditional 2D TVs, the huge advantages in visual effects and user interaction have made 3D stereo TV a research hotspot. It will develop and become a new generation of interactive broadcasting network and broadband network after digital TV. The important application of the media. [0003] At present, a general three-dimensional television transmission technology is the "video + depth" technology: a color video expressing texture is transmitted, and a corresponding depth video is tran...

AI Technical Summary

Problems solved by technology

The key to this process is in the process of upsampling. Most studies use the traditional upsampling method, but because it ignores the corresponding relationship between depth video and color video, accurate edge values ​​cannot be obtained when restoring edges, and to a certain extent destroys the locally consistent property of the depth map

Some studies have explored the method of using color video to guide the upsampling of depth video. However, these methods are based on some specific downsampling methods, and no further consideration is given to ensure the local consistency of the depth map.

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