Abstract
We propose a new small target detection system that detects small target candidates based on morphology operations and detects actual targets using a modified Gaussian distance function. To reduce clutter on the edges of clouds, a median filter is applied as preprocessing. Two kinds of images are calculated with closing and opening morphological operators, respectively. In the morphology operations, various sizes of structure elements are used to consider the sizes of targets and candidate targets are extracted from difference images between the two images in the closing and opening operations. With a modified Gaussian distance function, small targets are detected from the candidate targets. The proposed method is less sensitive to clutters than existing methods, and has a detection rate of 98%.KeywordsIR ImageSmall TargetGaussian Distance FunctionTop-HatNWTH
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