P( boundary | x, y ) Images

These are the Pb images (collapsed across orientations) of the 100 test images produced by the logistic regression classifier using the complete feature set. See the paper for details on the features and classifier. A larger set of pb images is available here.

Each image is shown along side the resposes of the Canny detector and a detector that uses the second moment matrix. The second row shows our detector with BG+TG (grayscale only), BG+TG+CG, and the human marked boundaries.


BG = brightness gradient, CG = color gradient, TG = texture gradient



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