Infrared small target detection method based on multi-direction morphological filtering complex cloud background

The invention discloses an infrared small target detection method based on a multi-direction morphological filtering complex cloud background. A multi-direction Tophat method is provided for filtering according to the difference of the geometrical morphology characteristics after cloud layer edge and target imaging, and a target segmentation threshold is determined by the gray difference between an original image and a filtering image so as to extract an infrared target. According to the infrared small target detection technology, a multi-direction filtering module based on the morphology is designed according to the geometrical morphology after cloud layer edge imaging, the Tophat filtering method, mainly including median filtering, corrosion and expansion filtering methods, is applied to extract background information covering the cloud layer edge apart from the infrared small target, and the target is extracted through the segmentation threshold generated by the difference value image. 本发明公开了种基于多方向形态学滤波复杂云