A Modified Morphological Corner Detector

Abstract

In this paper we propose a modified morphological corner detection method which can find convex and concave significant points using simple integer computation. We use the morphological operator A – A。B as a useful extractor to preserve some connected regions for detecting convex corners and use the morphological operator A ˙ – A dilated by a small structuring element to maintain some connected regions for detecting concave corners. For complementary, maximizing distance measurement between the pixel belong to a boundary segment in two contiguous significant points and the chord connecting these two contiguous significant points can be applied to remedy the loosing corner due to the shape of the chosen structuring element.