Small target detection using main directional suppression high pass filter

Small target detection in deep space background with a complex background is one of the most important tasks in space technology. Undulant background and stars have a great influence on the target detection for low signal to noise ratio targets of imagery. In this paper, a main directional suppression high pass filter is proposed for background suppression, furthermore applied in small target detection. First, target and background models are created. Second, the problems and the necessity of the deep space background suppression are proposed. Then, the main directional suppression high pass filter is presented for background suppression. Experimental results prove that the presented algorithm is efficient and adaptable to small and dim target detection under undulant background with star lines.