A Multi-line Image Difference Technique to Background Suppression Based on Geometric Jitter Correction

With the development of space optical remote sensing technology, in order to meet the needs of large-scale moving target detection and recognition, the research of multi-line detector remote sensing system has become a key development direction. However, after using multi-line push-broom imaging, the background suppression is performed by image difference, and its accuracy depends largely on the suppression effect of geometric jitter in the imaging process. Therefore, this paper proposes a multi-line image difference technique to background suppression based on geometric jitter correction. First, an adaptive algorithm is used to select a template with a suitable size for image registration. Secondly, the gray correlation method is used to detect the geometric displacement error between the images, the geometric jitter correction is performed on the image, and finally the multi-line image is processed differentially to obtain the background. Suppress the image. Simulation and experiments show that this method can quickly and accurately perform geometric jitter correction on the remote sensing image sequence of multi-line push-broom imaging. The correction accuracy is 0.3 pixels. After the difference, the moving target in the image is obvious, and the effectiveness can reach 98%.