A Sub-Pixel Edge Detector: an Implementation of the Canny/Devernay Algorithm
Rafael Grompone von Gioi, Grégory Randall · Image Processing On Line · 2017
An image edge detector is described which produces chained edge points with sub-pixel accuracy. The method incorporates the main ideas of the classic Canny and Devernay algorithms. The analysis shows that a slight modification to the original formulation improves the accuracy of the edge points.