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Monocular structured light-based three-dimensional modeling method

A 3D modeling and laser technology, applied in the fields of reverse engineering, computer vision, close-range photogrammetry, and image processing, can solve the problems that laser scanners affect the development of 3D modeling, and achieve low prices, broad market prospects, and simple hardware equipment Effect

Inactive Publication Date: 2011-03-16
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high price of laser scanners has greatly affected the development of 3D modeling, and there is an urgent need for a point cloud acquisition device with the same high precision but low price

Method used

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  • Monocular structured light-based three-dimensional modeling method
  • Monocular structured light-based three-dimensional modeling method
  • Monocular structured light-based three-dimensional modeling method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Further introduce the fast three-dimensional modeling method of the present invention through specific implementation mode below:

[0042] 1. Obtain the sequence image of the calibration block. Calibration block, the object to be modeled is placed on the platform, and the brightness of the laser line is adjusted through the switch. If it is an object to be modeled, a filter is placed in front of the lens, and then the program controls the movement of the platform and the camera to take pictures, photo-movement-photograph -Movement-···-Photographing, drive control with the same distance for each step; if the mobile scanning system has been calibrated, import the calibration structure file and directly transfer to three, otherwise transfer to two.

[0043] 2. Calibrate the camera DLT parameters, laser plane parameters and step distance parameters according to the calibration block sequence image:

[0044] 1. Select one of the image sequences IMG1 where eight control poin...

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Abstract

The invention discloses a method for quickly acquiring an object surface model, which comprises the following steps of: (1) automatically controlling the movement of a bearing platform and acquiring qualified sequence images through software; (2) accurately marking a laser plane, a camera parameter and a bearing platform movement space through coordinate of each marking point of a marking block, position of a laser line on the image and relative relationship between an object space point and the laser line; (3) accurately extracting the image coordinate sequence of the laser line; (4) reading the marking parameter, and obtaining a three-dimensional coordinate point cloud of an object by using forward intersection of triangulation principle; and (5) obtaining a complete three-dimensional model by using Polyworks equal point cloud processing software for editing. The method can quickly reconstruct the three-dimensional surface model of the object, and can judge whether to meet the requirements by using the quickly generated accurate three-dimensional model.

Description

technical field [0001] The invention belongs to the field of close-range photogrammetry, relates to a computer vision measurement method, in particular to a measurement method for rapidly recovering a three-dimensional surface model of an object, belongs to the fields of image processing and computer vision, and also belongs to the field of reverse engineering. Background technique [0002] With the development of information technology, people are increasingly dissatisfied with the existing picture information, and the development of two-dimensional plane information to 3D is the trend. 3D information has incomparable advantages over 2D information in product display and promotion, cultural relics preservation and exhibition, industrial design and manufacturing, and drawing restoration. Therefore, the rapid, real and objective establishment of three-dimensional surface models of objects has attracted more and more attention. At present, 3D modeling generally uses laser sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G01C11/00
Inventor 郑顺义马电徐轩
Owner WUHAN UNIV
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