Segmentation by Tangent Filter

Abstract : Image contour detection is fundamental to many image analysis applications, including image segmentation, object recognition and classification.In this paper, the main idea is to treat the pixel with a special mask for each pixel based on a criterion the orientation of the gradient. The masks used are inspired by the operators of Laplacian. The pixel processed is not in the center of the mask but on its tangent. The results obtained are very positive on certain types of images.