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Region-partitioning 3D video mapping method

A mapping method and sub-regional technology, applied in the field of 3D video synthesis, can solve problems such as large amount of calculation and large amount of data in multi-viewpoint method

Active Publication Date: 2015-01-07
山西班姆德机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of data in the multi-view method, it is a big challenge for the real-time performance of DIBR technology
At the same time, 3D mapping is one of the most computationally intensive links in DIBR, and repeated 3D mapping for multiple original viewpoints will cause a great burden on DIBR

Method used

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Examples

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Embodiment Construction

[0088] A preliminary test experiment has been done on the regional 3D video mapping scheme proposed by the present invention. Use standard test sequence as input, namely Philips Mobile sequence, take the first 100 frames for test, sequence resolution 720*540. Three different modes are used: full pixel, half pixel, and quarter pixel. Use dell workstation for simulation, workstation parameters are: Intel(R), Xeon(R) Quad-Core CPU, 2.8GHz, 4.00GB-DDR3 memory. The software platform is Visual studio 2008, and the program is implemented in C++ language programming.

[0089] This example is implemented like this, and its process includes the following steps:

[0090] The first step: Take the texture map and the corresponding depth map of the two adjacent viewpoints of the 3D video, and then calculate the threshold ΔZ max = 20.

[0091] Step 2: Select viewpoint V 1 Or viewpoint V 3 As the main viewpoint, the boundary in the depth map of the main viewpoint is detected.

[0092] That is: (1)...

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Abstract

The invention provides a region-partitioning 3D video mapping method, and belongs to the technical field of 3D video synthesis. Pixels of different regions are differentiated and processed differently, so that mapping and repeated mapping of invalid information are avoided. A view point is randomly selected as a main view point, regions are partitioned by analyzing region features according to a depth map of the main view point, and the partitioned regions include the BNER, the BSER, the DER, the FSER and the FNER. For the main view point, all the regions except the no effect regions (including the BNER and the FNER) are mapped to a virtual view point; for a non-main view point, single effect regions ((including the BSER and the FSER) are mapped to the virtual view point; gaps generated in the 3D mapping process are filled in an interpolation mode through surrounding pixels.

Description

Technical field [0001] The invention belongs to the technical field of 3D video synthesis, and specifically relates to a sub-regional 3D video mapping method. Background technique [0002] In 3D video, viewpoint synthesis is a very important technology. At present, most of them use DIBR (Depth-image-based Rendering) technology to synthesize virtual viewpoints. The core of DIBR is to use depth information and camera parameters to map pixels from a known original viewpoint to an unknown synthetic viewpoint. There are two main methods of DIBR: single-view method and multi-view method. Single-view DIBR generally includes two steps: (1) 3D mapping; (2) hole filling. The multi-view DIBR method also includes an additional step: viewpoint fusion, that is, the virtual viewpoint synthesized from each original viewpoint is merged into a final viewpoint. Generally, there are two fusion methods: (1) Use a linear weight function to mix two viewpoints; (2) Choose one mapped viewpoint as the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00
Inventor 王安红邢志伟金鉴武迎春李东红
Owner 山西班姆德机械设备有限公司
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