Showing papers by "Charles R. Dyer published in 1979"
TL;DR: Elongated black objects in black-and-white pictures can be ``thinned'' to arcs and curves, without changing their connectedness, by (repeatedly) deleting black border points whose deletion does not locally disconnect the black points in their neighborhoods.
Abstract: Elongated black objects in black-and-white pictures can be ``thinned'' to arcs and curves, without changing their connectedness, by (repeatedly) deleting black border points whose deletion does not locally disconnect the black points in their neighborhoods This technique generalizes to gray-scale pictures if we use a weighted definition of connectedness: two points are ``connected'' if there is a path joining them on which no point is lighter than either of them We can then ``thin'' dark objects by changing each point's gray level to the minimum of its neighbors' gray levels, provided this does not disconnect any pair of points in its neighborhood Examples illustrating the performance of this technique are given
100 citations
01 May 1979
TL;DR: In this paper, an edge-based procedure for extracting primitives from textures was proposed, which groups edges into region boundaries by joining facing pairs of edge points, and a pilot evaluation was performed by examining the usefulness of these primitives for texture classification.
Abstract: : Many textures are characterizable as a collection of primitive elements arranged over a background field. This paper defines an edge-based procedure for extracting primitives from textures. The technique groups edges into region boundaries by joining facing pairs of edge points. A pilot evaluation is performed by examining the usefulness of these primitives for texture classification. (Author)
28 citations