Shape processing and analysis using the calypter

摘要: Summary After presenting some elementary criteria that should be respected by any automatic shape analysis technique, this paper focuses on the importance of binary image encoding method. Most analysers simply use a raster to represent object. If, occasionally, vectorial description is available, it merely chosen for its performances in data compression. Data compression and have different goals usual methods cannot satisfy both. The calypter new descriptor vectorizing as set maximal inscribed discs. It most efficient means accomplishing Euclidean mathematical morphology transformations allows further developments processing. A simple adaptive contour filtering technique presented. offers local global perception characteristics. permits complete automation morphometric roundness charts used many laboratories also generates parameters. case study three sand populations presented show pertinence ‘equivalent roundness' parameter.