Calibrating method for a spatial-encoding-based rangefinder

Xiaoyang Yu; Jian Zhang; Liying Wu; Juchun Lu; Qing Lin; Guihong Bi

doi:10.1117/12.334323

29 December 1998 Calibrating method for a spatial-encoding-based rangefinder

Xiaoyang Yu, Jian Zhang, Liying Wu, Juchun Lu, Qing Lin, Guihong Bi

Author Affiliations +

Proceedings Volume 3520, Three-Dimensional Imaging, Optical Metrology, and Inspection IV; (1998) https://doi.org/10.1117/12.334323
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

Abstract

This paper describes the principle of the spatial encoding- based rangefinder. Its parameters to be calibrate are found out. Mathematical expressions are deduced of its measurement errors caused by calibration errors. Analysis shows that it is difficult to calibrate the parameters separately, especially some parameters are unable to calibrate. So we present a new calibrating method based on table. In the normal operation of the rangefinder, it directly obtains the ranges the pixels of the image of the object from the table after giving its codes. Our calibrating method has the advantages of simple and high accuracy.

Citation Download Citation

Xiaoyang Yu, Jian Zhang, Liying Wu, Juchun Lu, Qing Lin, and Guihong Bi "Calibrating method for a spatial-encoding-based rangefinder", Proc. SPIE 3520, Three-Dimensional Imaging, Optical Metrology, and Inspection IV, (29 December 1998); https://doi.org/10.1117/12.334323

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