• Opto-Electronic Engineering
  • Vol. 39, Issue 1, 34 (2012)
LU Shi-jiang*, LI Yong, WANG Hui, and JIN Hong-zhen
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1003-501x.2012.01.007 Cite this Article
    LU Shi-jiang, LI Yong, WANG Hui, JIN Hong-zhen. High-speed and Dense 3D Shape Capture of Scene Consisting of Spatially Isolated Objects[J]. Opto-Electronic Engineering, 2012, 39(1): 34 Copy Citation Text show less

    Abstract

    A method for capturing dense 3D shape of scene consists of spatially isolated objects with high-speed is proposed. In this method, three patterns are projected onto objects and the deformed patterns are captured at the same time to obtain their 3D shape and texture. The two patterns are π phase shifting sinusoidal fringe pattern. The phase distribution of deformed fringe pattern is obtained with Fourier transform. The texture of objects is obtained by adding these two deformed fringe patterns. Another pattern is used for identifying the order of fringe. Then, absolute phase is obtained and phase of isolated objects can be unwrapped as well. The pattern consists of several vertical slits with width the same as the period of sinusoidal fringe pattern. The slits are coded with three gray levels. A slit consists of one gray level or two gray level distributed periodically. So, six codes are obtained. The slits are arranged according to a pseudorandom sequence consisting of these codes. The order of fringe pattern is determined through subsequence matching. A high-speed capture system was constructed with a modified DLP projector, which can project patterns at 360 fps, and a high-speed camera. The 3D shape and texture capture speed of 60 fps with resolution of 640×480 points and that of 120 fps with resolution of 320×240 points was archived in experiment.
    LU Shi-jiang, LI Yong, WANG Hui, JIN Hong-zhen. High-speed and Dense 3D Shape Capture of Scene Consisting of Spatially Isolated Objects[J]. Opto-Electronic Engineering, 2012, 39(1): 34
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