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FAST_CORNER_DETECTOR

FAST_CORNER_DETECTOR

Name


    FAST_CORNER_DETECTOR

Purpose


    This function will return a 2xn array of corner coordinates identified
    in the provided greyscale image.

Category


    Image Processing.

Parameters


    image
      A two-dimensional (m x n) array containing the greyscale image to be used
      for feature/corner extraction.

Keywords


    DIFFERENCE_THRESHOLD
      An optional named variable containing the brightness threshold to
      be used to determine whether a surrounding pixels is brighter than
      or darker than the candidate corner pixel (default value is 50).
    CONTIGUOUS_THRESHOLD
      An optional named variable containg the number of contiguous pixels
      that must appear in sequence in order for a candidate pixel to be
      considered a corner pixel (default value is 12).
    NON_MAXIMAL_SUPPRESSION
      An optional keyword indicating whether non-maximal suppression
      should be used to eliminate "clumping" of identified corner points.
    CORNER_IMAGE
      An optional named variable that will contain, upon return, a visualization
      of the corner points (shown in red) laid upon the original image (the
      returned value is a 3 x m x n color image array).
    VERBOSE
      An optional keyword indicating whether diagnostic information should
      be displayed to the console during execution.

Return Value


    This function returns a 2xn array containing the image coordinates of the
    n corner points identified by the FAST detector.

Reference


      E. Rosten and T. Drummond, "Machine learning for high-speed corner
      detection,” in Computer Vision - ECCV 2006, A. Leonardis, H. Bischof,
      and A. Pinz, eds., Lecture Notes in Computer Science 3951, pp. 430–443,
      Springer Berlin / Heidelberg, 2006.

Modification History


    Written by: Carl Salvaggio
    Original Code: Sep 25, 2010

Disclaimer


    This source code is provided "as is" and without warranties as to performance
    or merchantability. The author and/or distributors of this source code may
    have made statements about this source code. Any such statements do not
    constitute warranties and shall not be relied on by the user in deciding
    whether to use this source code.
    This source code is provided without any express or implied warranties
    whatsoever. Because of the diversity of conditions and hardware under which
    this source code may be used, no warranty of fitness for a particular purpose
    is offered. The user is advised to test the source code thoroughly before
    relying on it. The user must assume the entire risk of using the source code.



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