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Proceedings Paper

Novel high speed method using gray level vector modulation for 3D shape measurement
Author(s): Gui-Wen Lin; Dong Li; Jin-Dong Tian
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Paper Abstract

Binocular Vision Technique is widely used in three-dimensional(3-D)measurement. Matching of pictures captured from two cameras is the most critical and difficult step in 3-D shape reconstruction. The method combines codedstructured light and spatial phase is usually adopted. However, being time consuming in matching, this method could not meet the requirements of real-time 3-D vision. In order to satisfy the high speed characteristic of real-time measurement, a novel method using gray level vector modulation is introduced. Combining binary code with gray coding principle, new coding patterns using gray level vector method is designed and projected onto the object surface. Each pixel corresponds to the designed sequence of gray values as a feature vector. The unique gray level vector is then dimensionally reduced to a resulting value which could be used as characteristic information for binocular matching. Experimental results further demonstrated the correctness and feasibility of the proposed method with fewer component patterns and less computational time.

Paper Details

Date Published: 13 November 2014
PDF: 8 pages
Proc. SPIE 9276, Optical Metrology and Inspection for Industrial Applications III, 92761X (13 November 2014); doi: 10.1117/12.2072045
Show Author Affiliations
Gui-Wen Lin, Shenzhen Univ. (China)
Dong Li, Shenzhen Univ. (China)
Jin-Dong Tian, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 9276:
Optical Metrology and Inspection for Industrial Applications III
Sen Han; Toru Yoshizawa; Song Zhang, Editor(s)

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