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Proceedings Paper

Binary coded grating with error diffusion and its application in 3D sensing
Author(s): Tao Xian; Xianyu Su
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Paper Abstract

With the development of computer technology and CCD sensor, 3D sensing with sinusoidal structure illumination are widely used. To obtain the shape information of a 3D object, a procedure called spatial modulation-demodulation is performed. In most practical methods such as PMP, FTP, SPD or MMP, sinusoidal structured illumination is utilized as the carrier of spatial modulation, and the quality of it plays an important role in the measurement result. But it is very difficult to produce a perfect sinusoidal grating. The idea of Error Diffusion algorithm is first used to produce a better sinusoidal illumination structure. 1D and 2D sinusoidal module is designed. A computer simulation system base on PMP model is established to implement Error Diffusion modulation to structured light field. Computer simulations have verified the efficiency of Error Diffusion grating.

Paper Details

Date Published: 10 October 2000
PDF: 5 pages
Proc. SPIE 4222, Process Control and Inspection for Industry, (10 October 2000); doi: 10.1117/12.403885
Show Author Affiliations
Tao Xian, Sichuan Univ. (United States)
Xianyu Su, Sichuan Univ. (China)

Published in SPIE Proceedings Vol. 4222:
Process Control and Inspection for Industry
Shulian Zhang; Wei Gao, Editor(s)

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