A method of color correction for Chang'E-3 satellite camera topography image

作者：Zhao Ru Jin; Liu En Hai; Wang Jin; Yu Guo Bin

来源：Journal of Astronautics, 2016, 37(3): 341-347.

DOI：10.3873/j.issn.1000-1328.2016.03.013

• Chang'E-3
• Color calibration
• Color correction
• Color difference
• Correction matrix
• Satellite cameras
• Topography images
• White balance

A novel two-step color correction method of Chang'E-3 (CE-3) satellite camera topography image based on color calibration and white balance model is proposed in the light of the fact that the color spectrum response of camera differs from the CIE criterion, and the image color of camera is aberrant under influence of illumination on the lunar surface. Firstly, the hue correction matrix is obtained standard light source by using the least square of 24 kinds of standard color method, to enhance the adaptability of the color correction coefficient matrix to different color images. Secondly, 9 rank white balance under simulative illumination of moon is applied to improve the adaptability of white balance coefficient matrix and reduce the influence of illumination on the lunar surface. The experimental results on the ground and on the moon show that the color difference of image based on proposed method is lower, and the corrected color of image is more consistent with the human eyes.

• 出版日期2016