Detecting Discontinuities in Two-Dimensional Signals Sampled on a Grid

Date of Online Publication: 02/11/2010
Keywords: Edge detection, discontinuities, wavelets, polyharmonic splines.

Abstract: In this paper we consider the problem of detecting, from a finite discrete set of
points, the curves across which a two-dimensional function is discontinuous. We propose
a strategy based on wavelets which allows to discriminate the edge points from points in
which the function has steep gradients or extrema.


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