Binary coded grating with error diffusion and its application in 3D sensing

Tao Xian; Xianyu Su

doi:10.1117/12.403885

10 October 2000 Binary coded grating with error diffusion and its application in 3D sensing

Tao Xian, Xianyu Su

Proceedings Volume 4222, Process Control and Inspection for Industry; (2000) https://doi.org/10.1117/12.403885
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

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.

Citation Download Citation

Tao Xian and Xianyu Su "Binary coded grating with error diffusion and its application in 3D sensing", Proc. SPIE 4222, Process Control and Inspection for Industry, (10 October 2000); https://doi.org/10.1117/12.403885

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