Constrained parametric curve detection using clustering on Hough curves over a sequence of images

摘要

A method for automatically detecting a constrained curve over a set of images includes: obtaining a set of one or more binary images of a scene wherein pixels thereof are designated as an edge pixel or not; and, processing at least one of the images. The processing includes: applying a Hough transform to the image to generate an accumulator array; determining Hough peaks from the accumulator array; selecting Hough peaks subject to a set of constraints; determining Hough curve segments for the selected Hough peaks; grouping the Hough curve segments into clusters; selecting from the clusters a cluster having a greatest number of Hough curve segments; and fitting a curve to the Hough curve segments grouped in the selected cluster.