Radiation Consistency Correction Method of Optical High Resolution Dual Camera Image

With the improvement of the resolution of the optical camera on the satellite, the method of carrying two cameras on the satellite is often used to improve the width and realize the wide coverage. The ground processing can get the dual camera image. The dual camera image avoids the geometric and radiation reprocessing process of the two cameras, and has great advantages in the quantitative application of remote sensing data. However, because the photoelectric system of the two cameras on the satellite is independent and the temperature control is different, compared with the single camera products, the image processing of the two cameras has difficulties in geometric splicing and radiation consistency correction. In this paper, aiming at the problem of dual camera image radiometric consistency correction, a method combining single camera radiometric correction model and dual camera radiometric correction model is proposed to correct dual camera image radiometric consistency. On the one hand, the radiometric calibration model of single camera is obtained by using side-slither calibration of multi scene. On the other hand, the radiation consistency correction model of the right camera is established based on the left camera. The dual camera image data of PRSS-1 remote sensing satellite are used for comparison and analysis before and after the use of the modified model. Finally, a large number of on orbit data tests show that there is no color difference between the dual camera images after correction, and the correction accuracy is better than 3% in the range of one scene. The accurate radiation consistency correction model of the dual camera images in any orbit can be obtained. The method in this paper has good applicability.