itk_g_morph

perform gray-scale morphological operations on a volume

itk_g_morph <input> <output> [options]

DESCRIPTION

itk_g_morph applies grayscale morphological operations to a volume using the Insight Toolkit (ITK). Unlike itk_morph, which operates on binary images, itk_g_morph works directly on the continuous intensity values of the input volume. This is useful for non-uniform illumination correction, feature enhancement, and noise reduction without prior binarization.

Operations are specified through an expression string (--exp) using single-character codes. The structuring element radius is controlled with --radius. Compound operations such as grayscale opening (erode then dilate) and closing (dilate then erode) can be built by chaining codes.

OPTIONS

--verbose

Print verbose information during processing.

--clobber

Overwrite the output file if it already exists.

--exp str

Specify the morphological expression string. Operation codes: D = grayscale dilate, E = grayscale erode, M = grayscale median filter.

--radius r

Set the radius (in voxels) of the structuring element. Default is 1.

EXAMPLES

Apply grayscale dilation with radius 2:

itk_g_morph input.mnc dilated.mnc --exp D --radius 2

Apply grayscale morphological closing (dilate then erode):

itk_g_morph input.mnc closed.mnc --exp DE --radius 1

Apply a grayscale median filter:

itk_g_morph input.mnc median.mnc --exp M --radius 2

Apply grayscale morphological opening (erode then dilate):

itk_g_morph input.mnc opened.mnc --exp ED --radius 3 --clobber

AUTHOR

Vladimir S. Fonov - Montreal Neurological Institute, McGill University.

COPYRIGHTS

Copyright (C) Vladimir S. Fonov, McConnell Brain Imaging Centre, McGill University.

SEE ALSO

itk_morph, mincmorph, itk_diffusion, minccalc