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Research for Three-Dimensional Measuring Technology Based on Composite Structured Light

Author: JiangShanShan
Tutor: WeiZhiQiang
School: Ocean University of China
Course: Computer Software and Theory
Keywords: Hybrid coding method Peak detection Multi-channel dynamic programming K-means separations
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 73
Quote: 0
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Abstract


3D modeling techniques based on structured light 3D measurement technology , with its high resolution , real-time and actively controlled characteristics in recent years in the field of three-dimensional measurement has been widely used , and the introduction of structured light 3D measurement technology medical field, the sensitivity and accuracy of the positioning of the lesion area to improve the surgical operation , has a very important medical and social values ??. In order to achieve fast , accurate three-dimensional reconstruction , the key technologies of hybrid coding structured light - based three-dimensional measurement studies, this paper reads as follows: In this paper, in-depth study of structured light 3D measurement technology is proposed based on the DB sequence hybrid coding method , encoding a color attribute as a basic coding elements , and the introduction of strength properties , peak detection and edge detection in the three-dimensional reconstruction will be combined in order to achieve high resolution and accuracy , and to achieve a colored stripes center sub-pixel positioning , to improve the accuracy of the positioning of the stripes . Affected by objective factors of the environment as well as color interference projection pattern photographed with the original color is not exactly the same , which interfere with the stripes match this color classification method based on K-means clustering , each projected color fitting a straight line template , and then use the the template straight line as a reference color stripes of color separation . The experiments show that this method can improve the accuracy of color stripe separations . 3 stripes lost object surface discontinuities and occlusion problems caused phenomenon , this paper using a dynamic programming algorithm . The algorithm recursive way to strike a global optimal match , cause the DB sequence space stripes lost cause dependency destruction and the matching phenomenon difficult to match with the wrong solution . The experiments show that this method can effectively solve the stripes lost , reducing the stripes false matches happening . This paper 3DS MAX software simulation study of the measurement system , projector, camera , and the object , and the completion of the simulation of the measurement system design and demonstrate the feasibility of the three-dimensional reconstruction of brain surgery based on structured light .

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