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Path: Imaging/ImageMatching
% Canny edge detector.
Sigma and eps are parameters for the Gaussian derivative.
thresh is a noise threshold for the direction calculation. This
prevents directions appearing for very small values of the
derivative.
Since version 8.
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Form:
CannyEnhancer;
[eS, eO] = CannyEnhancer( i )
[eS, eO] = CannyEnhancer( i, sigma )
[eS, eO] = CannyEnhancer( i, sigma, eps )
[eS, eO] = CannyEnhancer( i, sigma, eps, thresh )
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Inputs
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i (n,m) Grayscale
sigma (1,1) Standard deviation
eps (1,1) Epsilon
thresh (1,1) Fraction of max derivative to set to zero
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Outputs
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eS (:,:) Edge strength
eO (:,:) Orientation of the edge normal
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Reference: Trucco, E. and A. Verri, "Introductory Techniques for 3-D
Computer Vision, Prentice-Hall, 1998, p. 76.
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Imaging: ImageMatching/GaussianDerivative Imaging: ImageProcessing/Imager Imaging: Utilities/ReadImage
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