Research on automatic multispectral images synthesis of space camera

Xing-xing Wu; Jin-guo Liu; Huai-de Zhou; De-zhu Kong; Shi-liang Lv

doi:10.1117/12.870308

10 November 2010 Research on automatic multispectral images synthesis of space camera

Xing-xing Wu, Jin-guo Liu, Huai-de Zhou, De-zhu Kong, Shi-liang Lv

Proceedings Volume 7850, Optoelectronic Imaging and Multimedia Technology; 78501Z (2010) https://doi.org/10.1117/12.870308
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Multilinear CCD Sensor was often used on space cameras to obtain multispectral images with each line representing different band channels. However images of different band channels obtained at the same time didn't coincide as there were spaces between lines. Pixel numbers to be adjusted between images of different channels varied when the space camera worked by swaying forward and backward or adjusted row transfer period to compensate image movement. An automatic multispectral images synthesis algorithm of space camera was put forward on the basis of analysis of such phenomenon. In this algorithm a new evaluation function was used to determine pixel numbers to be adjusted and the image regions of each band channel to be clipped. In this way images of different band channels could be synthesized automatically to obtain an accurate colorful image. This algorithm can be used to dispose a large mount of images from space camera directly without any manual disposal so that efficiency could be improved remarkably. In validation experiments the automatic multispectral images synthesis algorithm was applied in synthesis of images obtained from outside scene experiment of a multispectral space camera. Result of validation experiments proved that the automatic multispectral images synthesis algorithm can realize accurate multispectral images synthesis of space camera and the efficiency can be improved markedly.

Citation Download Citation

Xing-xing Wu, Jin-guo Liu, Huai-de Zhou, De-zhu Kong, and Shi-liang Lv "Research on automatic multispectral images synthesis of space camera", Proc. SPIE 7850, Optoelectronic Imaging and Multimedia Technology, 78501Z (10 November 2010); https://doi.org/10.1117/12.870308

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