Accurate characterization and speed of reorganition is an important issue in coin identification and counting system. In this paper various techniques for coin detection are analyzed and compared which gives insight to design real-time coin detection on embedded platform. Based on these results the system designer gets the brief idea about the computational complexity involved in various algorithms. Here there are three techniques, Euclidean distance transform based, region property based and Hough transform based are analyzed.

Index Terms Edge detection, Morphological process, Euclidean distance transform, regional properties, Hough Transform.