Post-processing filtering method for depth map

A depth map and depth plane technology, applied in the field of post-processing filtering, can solve the problems of depth map edge blurring, affecting the visual quality of 3D reconstruction, etc., and achieve the effect of optimizing quality, improving time domain jitter, and improving quality

Active Publication Date: 2014-07-23
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology

The general color image denoising filter technology is easy to cause the edge blur of the depth map, which seriously affects the visual quality of 3D reconstruction.

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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific examples described here are only used to explain the present invention, not to limit the present invention. Therefore, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0021] The depth map post-processing generation method of the depth map plane segmentation of the present invention is as follows: figure 1 As shown, the specific implementation steps are as follows:

[0022] (1) Input depth map I D and colormap I C ;

[0023] (2) the color map I C Divided into blocks of 16*16 pixels, for each block B Ci Carry out edge detection based on the grayscale image, us...

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Abstract

The invention relates to a post-processing filtering method for a depth map. The post-processing filtering method for the depth map comprises the following steps that (A1) the depth map and a color map on the same scene are input; (A2) the color map is partitioned into blocks, edge detection based on a grey-scale map is carried out on each block, a boundary based on a chrominance component is used for correcting a grey-scale edge on the scene, and the obtained boundary serves as the boundary of different depth planes in the depth map; (A3) the depth map is divided into blocks as large as those in the step (A2) and is segmented based on the blocks, and denoising filtering is carried on the depth map with each block as a unit; (A4) the steps from (A1) to (A3) are carried out repeatedly until all maps are processed; (A5) an obtained depth map sequence is output. According to the post-processing filtering method for the depth map, the smoothness features of pixel points in a space domain and a time domain are extracted, and calculation on the depth map is carried out in the reading and scanning processes, so that the depth map with the defects of time domain vibration, space domain instability, low scene reducibility and the like is improved.

Description

technical field [0001] The invention relates to a method for post-processing filtering of a depth map by object plane segmentation. Background technique [0002] Depth map sequence is important information for reconstructing 3D video, and its quality directly determines the viewing quality of 3D video. Currently, depth map sequence generation technologies mainly include active acquisition and passive calculation. Active acquisition mainly uses the depth camera to directly acquire the spatial depth information of the 3D scene, and passive calculation generally uses the color image sequence to perform stereo matching calculations to obtain the depth image sequence. Regardless of the acquisition method, there are inevitably problems such as noise and errors in the depth map. Therefore, it is generally necessary to use post-processing technology to optimize the quality of the depth map and improve the reconstruction effect of the 3D video. [0003] However, general color imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/00
Inventor 杨铀于国星喻莉陈小平
Owner HUAZHONG UNIV OF SCI & TECH
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