Log-Gabor filters v3

Use of the function phasecong3() allows corner points to be detected as well. These corner points are a subset of the edge image and, unlike other corner detectors, their location is precise and stable over different scales.

using TestImages
using Images
using ImagePhaseCongruency

img = restrict(testimage("mandril_gray"))
(edges, corners) = phasecong3(img)

mosaic(
    img,
    adjust_histogram(Gray.(edges), LinearStretching()),
    adjust_histogram(corners, LinearStretching()),
    nrow=1
)

Images from top to right: 1) original image 2) edges 3) corners

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