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Research and Implementation of the 3D Reconstruction Based on Surface Structured Light Method

Author: ZhangDong
Tutor: TangLiXin
School: Huazhong University of Science and Technology
Course: Measuring Technology and Instruments
Keywords: Three-dimensional reconstruction Structured light RELATED Department System Calibration Feature Extraction
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 69
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Abstract


The three-dimensional reconstruction is a digital technology , to be able to reconstruct a the actual objects digitized three-dimensional model , and has been widely used in the field of industrial inspection , reverse engineering , bio- medical , conservators , costume design and video game production . , Its non-contact and high precision reconstruction based on surface structured light 3D reconstruction techniques , extensive research and application . The technology will be projected onto the surface structure of the optical surface of the object , by the surface modulation structure of the deformation of the light image acquired by the camera , through the analysis of the light image of the deformation structure , the establishment of a point on the projection to the surface structure of the light projection point and its deformation structure the correspondence relationship between the optical image forming point , and then calculated in accordance with the principles of the triangulation the depth of each point of the object surface , in order to achieve the three-dimensional reconstruction of the object surface . Papers for a single projector - single camera 3D reconstruction system , system configuration constraints are too strong and projector calibration difficult problem to study , the following results were obtained : ( 1 ) on the basis of analysis of the relevant department of the traditional three-dimensional reconstruction system objects derived correlation coefficient of the projector and the camera under the conditions of the general location of the object , reducing constraints in the system to make the system more flexible configuration ; ( 2) of the calibration method for three-dimensional reconstruction system to achieve Zhengyou the camera calibration method of the plane on the calibration object ; proposed a projection color round mark projector calibration method , the method using the camera calibration to calibrate the projector, and to avoid the use of a special calibration device ; ( 3) calibration image processing method to achieve the the checkerboard calibration board image corner points of the X-type and color round mark center automatically extract and sort ID algorithm to improve the efficiency of the three-dimensional reconstruction system calibration . Finally , with the help of the laboratory has achieved heterodyne phase shift method to achieve a rapid phase commenced , and system calibration results and the derivation of the correlation coefficient of the three-dimensional reconstruction of the surface .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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