Title :
Preserving contours in dual pyramids
Author_Institution :
Inst. for Image Process. & Comput. Graphics, Graz, Austria
Abstract :
Pyramid schemes are described that make use of relations between the different resolutions of pictorial entities, such as intensity and edge. The presented system consists of a 3×3/2 intensity and a 2×2/2 curve pyramid. At every level, the two square grids are dual to each other. Contour operators generate the symbolic curve codes in the base of the curve pyramid. When the operators are moved several steps up and down in the curve pyramid, short contour segments are removed from the base. The remaining curves are used to preserve the contours at the reduced levels of the intensity pyramid. Experiences from different variants of the dual concept are reported
Keywords :
computational geometry; computerised pattern recognition; computerised picture processing; computational geometry; computerised pattern recognition; computerised picture processing; contours preservation; dual pyramids; symbolic curve codes; Computer graphics; Convolution; Filtering; Image processing; Image resolution; Image segmentation; Low pass filters; Noise reduction; Pixel; Smoothing methods;
Conference_Titel :
Pattern Recognition, 1988., 9th International Conference on
Conference_Location :
Rome
Print_ISBN :
0-8186-0878-1
DOI :
10.1109/ICPR.1988.28292
