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  • Title: On the extraction and alignment of image edges.
    Author: Caelli T, Yuzyk J.
    Journal: Spat Vis; 1986; 1(3):205-17. PubMed ID: 3153779.
    Abstract:
    In this paper the types of image filtering, segmentation and correlational processes which are consistent with the ability of human observers to align edges in arbitrary two-dimensional images are considered. Edge-only versions of a number of images were computed by pre-filtering, segmenting and using laplacians to extract luminance boundaries. The matching of such edge-only images with the originals seems well predicted by a (derivative) matched filtering (cross-correlation) process showing some bias toward edges contained within the middle frequency range of the images used.
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