Distance inspection for robot vision and 3D imaging using defocusing pixel dither

Xianhe Zhang; Guoping Zhang; Zhongru Zhu; Yanyan Chen

doi:10.1117/12.403907

10 October 2000 Distance inspection for robot vision and 3D imaging using defocusing pixel dither

Xianhe Zhang, Guoping Zhang, Zhongru Zhu, Yanyan Chen

Proceedings Volume 4222, Process Control and Inspection for Industry; (2000) https://doi.org/10.1117/12.403907
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

The object distance is the important parameter for image recognition and robot 3D view. This paper presents a novel method of pixel dither passive ranging. We derived the mathematical model of ranging, obtains the ranging mirror equation using lens equation, and analyzed the effect of light spectrum wide and the limit for demodulation. It shows that this method has the performances of high precision, high sensitivity and good anti-interference. In the process of ranging, it is not necessary to require the detector plane on the imaging plane exactly.

Citation Download Citation

Xianhe Zhang, Guoping Zhang, Zhongru Zhu, and Yanyan Chen "Distance inspection for robot vision and 3D imaging using defocusing pixel dither", Proc. SPIE 4222, Process Control and Inspection for Industry, (10 October 2000); https://doi.org/10.1117/12.403907

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