FREEMAN-CODE PROBABILITIES OF OBJECT BOUNDARY QUANTIZED CONTOURS

作     者：GROEN, FCA VERBEEK, PW 

作者机构：Pattern Recognition Group Department of Applied Physics Delft University of Technology The Netherlands 

出 版 物：《COMPUTER GRAPHICS AND IMAGE PROCESSING》 

年 卷 期：1978年第7卷第3期

页      面：391-402页

核心收录：

摘      要：The probability density functions of Freeman codes are given under the assumption that the curve segment may be approximated by a line segment in a grid column (or grid row). The a priori probability of odd or even Freeman codes is calculated with these p.d.f. s. The variance present in the curvature measurement based on Freeman codes is computed. Moreover the p.d.f. s of curve segment lengths associated with odd and even codes are determined.