Automatic binarization method in ISAR image

One of the most important image processing technique is the image segmentation technique, which is normally achieved by finding the proper threshold value for segmenting the images. This paper proposes an automatic binarization method for 2D radar images. The essential idea is to evaluate the derivative of the cumulative histogram of the given image and then find the inflection point, which indicates the proper binarization value for the given image. The proposed method is compared with a representative binarization method and the experimental results show the effectiveness of the proposed method.