Title :
Some defects in finite-difference edge finders
Author :
Fleck, Margaret M.
Author_Institution :
Dept. of Eng. Sci., Oxford Univ., UK
fDate :
3/1/1992 12:00:00 AM
Abstract :
This work illustrates and explains various artifacts in the output of five finite difference edge finders, those of J.F. Canny (1983, 1986), R.A. Boie et al. (1986) and R.A. Boie and I.J. Cox (1987), and three variations on that of D. Marr and E.C. Hildreth (1980), reimplemented with a common output format and method of noise suppression. These artifacts include gaps in boundaries, spurious boundaries, and deformation of region shape
Keywords :
interference suppression; pattern recognition; boundary gaps; finite-difference edge finders; noise suppression; pattern recognition; region shape deformation; spurious boundaries; Algorithm design and analysis; Cities and towns; Computer science; Finite difference methods; Laplace equations; Noise shaping; Petroleum; Shape; Topology; Uncertainty;
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
