Hole filling algorithm based on depth transition and overall depth item variability

An overall variational and in-depth technology, applied in the field of 3D display, can solve problems such as complex and time-consuming algorithms, difficult hardware implementation, etc.

Active Publication Date: 2017-08-01
HEFEI UNIV OF TECH
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  • Application Information

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Problems solved by technology

Compared with traditional algorithms, it has a better filling effect, but such a...

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  • Hole filling algorithm based on depth transition and overall depth item variability
  • Hole filling algorithm based on depth transition and overall depth item variability
  • Hole filling algorithm based on depth transition and overall depth item variability

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Embodiment

[0067] The hole filling algorithm of the present invention is carried out step by step. Firstly, the depth map is preprocessed, and a bilateral filter processing algorithm is adopted here. Then find out the foreground and foreground boundaries that need to be transitioned in the depth map, and perform a gradual transition of the depth gradient on this boundary to reduce the hole in the boundary. Afterwards, the small holes in the synthesized target image are repaired by using the global variational algorithm with depth term. Then deal with the large void at the boundary. Finally, an adaptive method is adopted to assign appropriate weights to the boundary synthesis.

[0068] figure 1 It is a schematic flowchart of a hole filling algorithm according to an embodiment of the present invention. like figure 1 The shown hole filling algorithm includes the following steps:

[0069] Step S101 inputting a reference image to obtain a depth map;

[0070] Step S102 processes the dept...

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Abstract

Image drawing using a depth map is a commonly used algorithm in 2D to 3D, but holes occurs in a final image drawn by using this method, resulting in undesirable visual effects. To solve this problem, the invention provides a hole filling algorithm based on depth transition and overall depth item variability for filing the holes, and thus a high-quality target image can be obtained. Firstly, the depth map is filtered in a preprocessing phase, and then transition is carried out on front and back scene boundary depths of the depth map. Therefore, the occurrence of front and back scene boundary holes can be reduced. The small hole points occurring in the target image are processed by an overall variability restoration algorithm with depth items. Large hole points are generally hole points occurring on the boundary continuously, variability restoration cannot be carried out on these hole points, and these hole points are filled by pixels of corresponding positions of a reference image. Experiments show that the algorithm has an excellent visual effect and a relatively high peak signal to noise ratio.

Description

technical field [0001] The present invention relates to the field of 3D display technology, and relates to front-background depth transition and hole filling technology, which can repair target images with high quality and have good visual effects, specifically a hole filling based on depth transition and overall variation of depth items algorithm. Background technique [0002] With the continuous development of video display technology, 3D display technology has become the basis of next-generation display technology with its three-dimensional, realistic, and interactive characteristics. At present, most of the 3D display technologies are realized by using the principle of parallax, that is, two different images are provided to the left eye and the right eye respectively, to simulate the characteristics of ordinary observers observing external things, so that the observers can watch at an appropriate angle. A three-dimensional sense of space is produced when the screen is d...

Claims

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Application Information

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IPC IPC(8): H04N13/00G06T5/00G06T5/20G06T7/50G06T15/00
CPCG06T5/002G06T5/005G06T5/20G06T15/00G06T2207/10028G06T2207/20028H04N13/128H04N2013/0081
Inventor 杨依忠伍能举胡雄楼汪鹏飞徐栋荣燊解光军
Owner HEFEI UNIV OF TECH
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