A detection method of infrared image small target based on order morphology transformation and image entropy difference

In this paper a novel approach of infrared image small target detection in background of sky and sea is put forward. Firstly, method of line-average-value- subtraction and order morphology filter are used to restrain correlative background and obtain candidate targets; then two different target detection methods are proposed and used to detect targets. One of them is that order morphological edge detection operators constructed are adopted to wipe off noise and false target while edge of target was extracted; another is that using image entropy difference to detect the discontinuity between targets and background. The experimental results show that the techniques presented in this paper are valid.