Image decomposition capabilities of the joint wavelet and Radon Transform

It is known that the detection of segments in digital pictures can be effectively performed by means of the Radon Transform (RT). We describe a post-processing method based on wavelets, which provides information to be used in the recognition task. We show that the RT can also be successfully applied to the detection of rectangles, and is able to provide information on their width. A further generalization is described in the case of the detection of circular and square spots, along with an application to the ship and wake detection in aerial images of sea regions.