[IPOL announce] new preprint: A Review of Classic Edge Detectors
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Tue Jul 16 09:57:30 CEST 2013
A new preprint is available in IPOL: http://www.ipol.im/pub/pre/35/
A Review of Classic Edge Detectors
by Haldo Spontón, Juan Cardelino
Abstract
In this paper some of the classic alternatives for edge detection in
digital images are studied. The main idea behind edge detection is to
find where abrupt changes in the intensity of an image have occurred.
The first family of algorithms reviewed in this work uses the first
derivative to find the changes of intensity, such as Sobel, Prewitt and
Roberts. In the second reviewed family it is used second derivative, for
example in algorithms like Marr-Hildreth and Haralick. Results obtained
from a qualitative point of view (perceptual) and from a quantitative
point of view (number of operations, execution time) are compared,
considering different ways to convolve an image with a kernel (step
required in some of the algorithms).
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