Corner detection on digital curves based on local symmetry of the shape

摘要

The detection of corners on digital curves is a problem of important in shape analysis. This paper describes a new method for detecting corners based on local symmetry of the shape. The proposed method consists of two steps. The first is the computation of symmetry measure for symmetry relative to a line at every point on a digital curve. The second is the location of reasonable local maxima of the symmetry measure as corners.The effectiveness of the new method is illustrated with the results of experiments for a number of different types of digital curves.