Extraction of chained contour lines in images by a synchronous Boltzmann machine
Jérôme Lacaille, Robert Azencott · 2002
Summary form only given, as follows. In gray-level images, local contour elements are strongly linked to the presence of high values (in norm) for the gradient of light intensity. But independent detection of high-contrast points does not in general extract smooth lines of chained contour elements, particularly in the presence of noise.>