Abstract

Calibration of line-scan cameras for precision measurement should have large calibration volume and be flexible in the actual measurement field. In this paper, we present a high-precision calibration method. Instead of using a large 3D pattern, we use a small planar pattern and a precalibrated matrix camera to obtain plenty of points with a suitable distribution, which would ensure the precision of the calibration results. The matrix camera removes the necessity of precise adjustment and movement and links the line-scan camera to the world easily, both of which enhance flexibility in the measurement field. The method has been verified by experiments. The experimental results demonstrated that the proposed method gives a practical solution to calibrate line scan cameras for precision measurement.

© 2016 Optical Society of America

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