Upsampling method for depth video compression of three-dimensional television

A depth video and three-dimensional technology, applied in the field of video coding, can solve the problems of ignoring the corresponding relationship between depth video and color video, not further considering the local consistency of the depth map, and destroying the local consistency of the depth map, so as to achieve smooth and good depth video Video transmission effect, noise point reduction effect

Active Publication Date: 2011-02-09
TSINGHUA UNIV
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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 t...

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  • Upsampling method for depth video compression of three-dimensional television
  • Upsampling method for depth video compression of three-dimensional television
  • Upsampling method for depth video compression of three-dimensional television

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Embodiment Construction

[0030] The up-sampling method for depth video compression of 3D stereo TV provided by the present invention includes the following steps:

[0031] (1) Divide the depth map to be reconstructed with the size equal to the original depth map into multiple up-sampling units, the pixels of the up-sampling unit are equal to α×α, α is the down-sampling rate, and the value range of α is: 2-6;

[0032] (2) Divide the pixels in the above-mentioned up-sampling unit into known pixels and unknown pixels, so that the upper-left pixel in the up-sampling unit is a known pixel, namely figure 2 The pixels marked in the middle grid, the remaining pixels are unknown pixels, namely figure 2 Pixels marked by diagonal lines;

[0033] (3) Use the up-sampling method corresponding to the down-sampling method to calculate the above-mentioned known pixels to obtain the depth value of the known pixel; the method of calculating the depth value of the unknown pixel is: where the unknown pixel is located The dep...

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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...

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Application Information

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IPC IPC(8): H04N7/46H04N13/00H04N7/26H04N15/00H04N19/132H04N19/597
Inventor 孙立峰李彦洁
Owner TSINGHUA UNIV
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