Name

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      LOCMAX

Purpose

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      Find local maxima in an image.

Category

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Calling Sequence

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      locmax, img

Inputs

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      img = image to process. in

Keyword Parameters

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Keywords

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        MASK=m returns a mask image with 1 at all
          local maxima and 0 elsewhere.
        WHERE=w returns 1-d indices of all local maxima.
          -1 if no local maxima.
        VALUES=v returns values of img at all local maxima.
        VALUE_IMAGE=vimg use vimg to determine values.
          Instead of img.
        IX=ix returns x index of all local maxima.
        IY=iy returns y index of all local maxima.
        /SORT sorts local maxima by descending image values.
        /NOEDGE ingores any maxima at image edges.

Outputs

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Common Blocks

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Notes

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      Notes: All output is through keywords.
        Ignores plateaus. May not work for
        all edge points.

Modification History

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      R. Sterner, 17 Aug, 1990
      R. Sterner, 27 Aug, 1990 --- added value_image.
  Copyright (C) 1990, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.