Pixel gray value correction for wide angle view image

Xiuhua Zhang; Boqi Liu; Feng Zhou

doi:10.1117/12.2204731

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17 December 2015 Pixel gray value correction for wide angle view image

Xiuhua Zhang, Boqi Liu, Feng Zhou

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Proceedings Volume 9811, MIPPR 2015: Multispectral Image Acquisition, Processing, and Analysis; 981113 (2015) https://doi.org/10.1117/12.2204731
Event: Ninth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2015), 2015, Enshi, China

Abstract

In wide angel CCD imaging system, for the large distance difference between every object point and the according imaging point, the acquired image intensity is non-uniform. In this paper, to reduce the intensity non-uniformity influence, a pixel gray value correction method based on illuminance and irradiance theory is proposed. The irradiance relation between the object point on-axis and the object point off-axis is analyzed, and a compensation formula is deduced to correct the image intensity. The proposed method is experimented on plenty of images, the results show the effectiveness and robustness of the proposed method.

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Xiuhua Zhang, Boqi Liu, and Feng Zhou "Pixel gray value correction for wide angle view image", Proc. SPIE 9811, MIPPR 2015: Multispectral Image Acquisition, Processing, and Analysis, 981113 (17 December 2015); https://doi.org/10.1117/12.2204731

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