Journal
OPTICS EXPRESS
Volume 29, Issue 15, Pages 22944-22956Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.431775
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Funding
- Strategic Priority Research Program of the Chinese Academy Sciences [XDA17040203, XDA19010103]
- National Natural Science Foundation of China [21827808]
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This paper proposes a new distortion correction method based on the off-axis Schwarzschild two-mirror hyperspectral imager, using polynomial and radial distortion models for correction. Compared with conventional methods, this approach is simple and efficient, suitable for correcting distortion in non-mapping pushbroom hyperspectral imagers.
A new method of distortion correction based on the off-axis Schwarzschild two-mirror hyperspectral imager is proposed in this paper. The polynomial model is used to indicate the distortion in the pushbroom direction and the correction method is based on linear feature. The radial distortion model is used to indicate the vertical pushbroom direction of distortion and the correction method is based on the cross ratio invariance. Compared with the common precision angle measurement method, this method is simple and efficient. This method can be applied to the distortion correction of the non-mapping pushbroom hyperspectral imager. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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