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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2005 [1]
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发表日期:2005
专题:长春光学精密机械与物理研究所
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The geometric distortions correction of uncooled large-sized relative aperture infrared imaging system (EI CONFERENCE)
会议论文
Infrared Components and their Applications, November 8, 2004 - November 11, 2004, Beijing, China
Fan X.
;
Sun Q.
;
Lu Z.
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提交时间:2013/03/25
The geometric distortion of infrared image
which was created by the large-sized relative aperture optical system. It could be corrected by the digital image processing technology. The magnitude of distortion would be enlarged quickly with the enlargement of relative aperture. Though the distortion could not impact on the articulation of the image
it would affect geometric location precision of the image directly. In this paper
the distortion correction of uncooled large-sized relative aperture infrared imaging system was discussed and the mathematical model of distortion correction was established. A algorithm of digital image processing was presented and applied based on control points by combining polynomial warping and space variant linear image interpolation. The method of polynomial warping was used to establish the locality relationship between the original image and the distortion ones. The space-variant linear image interpolation provided an efficient way to rebuild the frame of images. The computational costs of the proposed approach are very little and the precision is almost as high as the method of bicubic interpolation when compared to those of state-of-the-art nonlinear interpolation operators.
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