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VR three-dimensional reconstruction technology based on improved texture mapping algorithm

A technology of 3D reconstruction and texture mapping, applied in the field of VR 3D reconstruction, to achieve the effect of strong embeddability, easy embedding and high immersion

Pending Publication Date: 2021-04-02
国网陕西省电力公司西咸新区供电公司
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Problems solved by technology

VR can restore the electrical work site extremely high, and the staff can complete different simulated operation training without any danger, which is unmatched by traditional learning methods

Method used

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  • VR three-dimensional reconstruction technology based on improved texture mapping algorithm
  • VR three-dimensional reconstruction technology based on improved texture mapping algorithm
  • VR three-dimensional reconstruction technology based on improved texture mapping algorithm

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Step 1. Depth camera dual camera fusion calibration, output video stream. This step mainly has two parts. The first is to calibrate the distortion of each lens, and the second is to calibrate and fuse the depth map and color map.

[0020] The lens distortion calibration adopts the checkerboard calibration method, that is, use the camera to shoot a standard black and white grid checkerboard, and solve the equation through the corner points corresponding to multiple sets of data to perform distortion calibration. The present invention extracts the center of gravity of each black and white area as a feature point, and the center of gravity is to find the average value of the pixels in the object, namely:

[0021]

[0022] Among them, is the area (x i ,y i ) pixel coordinates in the domain, (x 0 ,y 0 ) is its center of gravity coordinates.

[0023] If the i...

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Abstract

The invention discloses a VR three-dimensional reconstruction technology based on an improved texture mapping algorithm. Aiming at the problems of high training cost, limited training content, difficult reproduction of part of fault scenes and adverse influence of online training on the existing production and life of the traditional power equipment, the invention provides a VR technology-based cable operation and maintenance skill and fault emergency repair training, and provides a VR three-dimensional reconstruction method for the VR technology-based cable operation and maintenance skill andfault emergency repair training. Specifically, scene input is carried out by using double cameras of a depth camera, and 3D model building and multi-level image building are carried out by using thecharacteristics that the depth camera can generate both an RGB image and a depth image. Firstly, a chessboard calibration method is used for carrying out single-machine calibration on an RGB image anda depth image, then multi-machine calibration is carried out, and a world coordinate system is constructed; then, a TSDF method in KinectFusion is used for carrying out preliminary three-dimensionalmodel building; and finally, the appearance model of the power equipment is optimized by using a texture mapping algorithm fused with depth information. Therefore, the authenticity of a built scene isgreatly improved, the problems of complex VR scene building, large manpower consumption and fuzzy key details are effectively solved, and the method has guiding significance for VR scene building inthe future.

Description

technical field [0001] The invention relates to a VR three-dimensional reconstruction technology based on an improved texture mapping algorithm. The technical field of the present invention is VR three-dimensional reconstruction, aiming at building three-dimensional models with low cost and high degree of restoration. Background technique [0002] In recent years, the degree of cableization of my country's power grid has been continuously improved, but the maintenance of power cables in the later stage is more difficult. Ensuring the safe operation of cable lines is the basic requirement for power system operation. Once the cable fails, it will directly affect the safe operation of the entire power system, and may even cause serious consequences such as fires and large-scale power outages. Therefore, an important task in cable operation and maintenance is to cultivate talents with cable operation and maintenance skills and troubleshooting techniques. The traditional cable ...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T19/00G06T15/04H04N13/15H04N13/156H04N13/239H04N13/363
CPCG06T17/00G06T15/04G06T19/006H04N13/239H04N13/15H04N13/156H04N13/363
Inventor 程鹏王涛梁鹏飞武威赵梅胡阳冯浩杨利峰李磊任磊张超波王黎王军张高张柏林朱成亮田向荣王帅李一非申强何佳梅坤鹏洛宁
Owner 国网陕西省电力公司西咸新区供电公司
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