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Three-dimensional reconstruction method based on multi-source data fusion

A technology of 3D reconstruction and multi-source data, applied in the field of 3D visualization, can solve problems such as distortion, achieve the effect of improving accuracy and integrity, and solving problems of ground object distortion and voids

Pending Publication Date: 2021-06-22
ZHEJIANG HUAYUN ELECTRIC POWER ENG DESIGN CONSULTATION CO LTD
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Problems solved by technology

[0004] Aiming at the existing problems, the present invention proposes a 3D reconstruction method based on multi-source data fusion to solve the problems of ground object distortion and holes in single data source modeling, and improve the accuracy and integrity of modeling

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Embodiment Construction

[0031] In order to further describe the technical features and effects of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, the main principle of the 3D modeling technology based on multi-source data fusion is to fuse the image point cloud obtained by the oblique photography of the UAV with the lidar point cloud, construct a TIN triangulation network, and then perform texture mapping, and finally form a high-precision 3D model.

[0033] specific implementation steps

[0034] S1. figure 2 Shown is the aerial survey process using the DJI Intuit quadrotor UAV for oblique photography. After selecting the target transmission tower, you should first choose a place with a wide field of vision and no obstruction for takeoff and landing. At the same time, the lighting conditions for image shooting should be good. If the measurement area is too large, the area should be divi...

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Abstract

The invention provides a three-dimensional reconstruction method based on multi-source data fusion. The method comprises the following steps: firstly, acquiring image and laser point cloud data by an oblique photography technology and a laser radar technology; secondly, unifying space coordinate systems of the two kinds of data to carry out data coarse registration; besides, an improved ICP algorithm is designed, and point clouds are resampled by using a voxel grid method on the basis of a traditional ICP algorithm, so that the convergence speed of the algorithm is accelerated, and the registration precision is improved. Experimental results show that the completeness of the three-dimensional model is ensured by the multi-source data fusion method, the limitation of modeling by a single technology is made up, and the method has a good application prospect.

Description

technical field [0001] The present invention relates to the field of three-dimensional visualization, and specifically adopts a multi-source data fusion method, which makes up for the distortion and hollowness of ground objects in single data source modeling, and improves the accuracy and integrity of modeling. Background technique [0002] In recent years, 3D reconstruction technology has been widely used in urban planning, land resource survey, cultural heritage protection and restoration, etc. In addition, the application of 3D reconstruction technology to power grid equipment has also received extensive attention. For example, the three-dimensional reconstruction of transmission towers is conducive to the safe operation of the power grid, and also improves the efficiency of transmission line operation and maintenance. How to obtain 3D data with high precision and high efficiency has gradually become a research hotspot in 3D modeling of reality. There are three main way...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33G06T5/50G06T17/20
CPCG06T5/50G06T17/205G06T2207/10028G06T2207/10044G06T2207/20221G06T2207/30184G06T7/344
Inventor 龚坚刚丁祥刘燕平丁小蔚章李刚周文俊杨继平麻潇波
Owner ZHEJIANG HUAYUN ELECTRIC POWER ENG DESIGN CONSULTATION CO LTD
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