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Study of 3D Reconstruction Based on Structured Light Projection Technology

Author: TaoQi
Tutor: XuHaiSong
School: Zhejiang University
Course: Measuring Technology and Instruments
Keywords: Three-dimensional reconstruction Projector camera ( ProCam ) system Camera calibration Projector scaling Structured light coding Binocular vision Triangulation Correction of non - planar projection Projector motion detection
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 280
Quote: 1
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Abstract


The three-dimensional reconstruction techniques have a very wide range of applications in the medical, aerospace, robotics navigation, as well as three-dimensional measurement, virtual reality and other professional fields. This technology will help improve the efficiency of product design and shorten the development cycle. The three-dimensional structure of the object have a lot However, some of these methods must rely on expensive equipment, as well as the need to spend a lot of computing time, the efficiency is relatively low, so researchers can both maintain a high efficiency (less time-consuming ) also has a lower cost (less equipment requirements), and enables the user to select the type of reconstruction programs according to their specific needs three-dimensional reconstruction of the system has an important significance, which is also the subject of the departure point. Projector camera (ProCam) system, on camera and projector calibration, binocular vision and triangulation theory to achieve a three-dimensional reconstruction based on the projection of structured light technology. The core technology of three-dimensional reconstruction of structured light coding techniques, this paper on the basis of the overall classification and comparison of current projection pattern coding scheme, the successful implementation the two reconfiguration scheme: the first Gray the Code Phase Shifting coding technology can for the reconstruction of complex objects, codec simple, but time-consuming; another based on De Bruija coding scheme just a projection reconstruction Only the first one twentieth of the program, but the coding complexity, complex and can not be reconstructed structure or color of objects. Experiment carried out a detailed analysis and comparison of the two coding schemes, pointing out that the application of occasions. In this paper, the success of these two programs in the same system, the user can choose a different encoding scheme for different application requirements reasonable three-dimensional reconstruction, taking into account the scientific and practical. As an application example of the outcome of this study, a three-dimensional reconstruction of the system of non-planar projection correction method. On the projection surface, the experimental results show that the corrected display image is no longer distorted by the projection surface, to achieve a display effect similar to the original projected image is captured as an observer projector camera. In addition, this paper also proposed a projector motion detection technology in the the actual projection display process, when the projector is moved, there is no need to re-them calibration, new calibration image correction automatically by the system, and through Experimental evaluation of its error correction parameters within 1% satisfaction restored before moving projection display. Finally, on the basis of summing up the main work of this thesis, the successor further research prospects.

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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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