Optimal checkerboard selection for structured light system calibration

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2009-08-01
Authors
Lohry, William
Xu, Ying
Zhang, Song
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Mechanical Engineering
Abstract

Structured light system calibration has been widely studied over the decades, and a variety of calibration approaches have been proposed. Among these methods, the flexible method using flat checkerboard is widely adopted. However, there is a lack of studies on selecting the optimal checker size for high accuracy calibration, whilst it is vital to understanding this factor. This paper presents a systematic study on how the checker size affects the calibration accuracy for a structured light system, and provides a general guideline to select the optimal size. For this initial study, 7 different checker sizes are selected, and experiments demonstrated that the system achieved the best calibration accuracy within a certain range of checker size.

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This is a conference proceeding from Optical Inspection and Metrology for Non-Optics Industries 7432 (2009): 1, doi:10.1117/12.823829. Posted with permission.

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Thu Jan 01 00:00:00 UTC 2009