Researching on Filtering Algorithms for Image Pretreatment

For the imaging system with tracking target continually,the target can change from point to side or from side to point.According to such case,three kinds of filtering algorithms are analyzed and compared for imaging pretreatment that adapt to both point and side targets.The simulated experiments show that the filtering effect of improved high-pass filtering is better than those of high-pass median filtering and gauss high-pass filtering,and it can be applied to practical project.