Point cloud model true color processing method of three-dimensional laser imaging system

An imaging system and point cloud model technology, applied in the field of image processing, can solve problems such as no true color processing

Active Publication Date: 2014-03-26
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

[0004] The laser point cloud formed by the 3D laser imaging system is a 3D l

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  • Point cloud model true color processing method of three-dimensional laser imaging system
  • Point cloud model true color processing method of three-dimensional laser imaging system
  • Point cloud model true color processing method of three-dimensional laser imaging system

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[0055] The basic principle of the present invention: using the method of combining photos and point clouds, first obtain the navigation time T and the navigation polar coordinate position information of the center of the inertial group in the earth coordinate system And navigation attitude information (γ, θ, ψ), point cloud polar coordinate information And photos. According to the time Ti when the photo was taken, calculate the polar coordinate position of the center of inertia in the earth coordinate system when the photo was taken And posture information (γ i ,θ i ,ψ i ), according to the polar coordinate position of the center of the inertia group in the earth coordinate system when the photo was taken Get the conversion matrix from the earth coordinate system to the northeast sky coordinate system According to the posture information of the center of inertia in the earth coordinate system when the photo was taken (γ i ,θ i ,ψ i ) To get the conversion matrix from the nort...

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Abstract

The invention discloses a point cloud model true color processing method of a three-dimensional laser imaging system. By a method of combining photos and point cloud, true color information of a scanned object is extracted through coordinate transformation to complete point cloud model true color processing. According to the invention, the trouble that true color processing of a three-dimensional stereoscopic model cannot be carried out at present is solved. Meanwhile, manual judgment is not required, there is no need to distinguish the shape of an object, and the point cloud is directly colored. The method provided by the invention has advantages of fast arithmetic speed, low time overhead and small workload. By the adoption of the method, true color effect of a three-dimensional stereoscopic model can be achieved well.

Description

Technical field [0001] The invention relates to a three-dimensional laser imaging system, in particular to a true color processing method of a point cloud model of the three-dimensional laser imaging system, and belongs to the technical field of image processing. Background technique [0002] Three-dimensional laser imaging system refers to the integration of laser scanners, global positioning systems, inertial measurement systems, etc. into a set of equipment, mounted on a carrier to scan ground targets, obtain three-dimensional information of the ground targets, and obtain the required three-dimensional space image through processing . Since the acquired reflected laser point data is densely distributed in a nebula shape, it is vividly called a laser point cloud (Point Cloud), which means that countless points are the results of objects presented in the computer according to the measurement rules. The 3D laser imaging system obtains the true color 3D model of the scanned objec...

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Application Information

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IPC IPC(8): G06T5/00G01B11/00
Inventor 魏宗康赵龙夏刚刘生炳于兰萍魏子寅
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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