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vgmopen.1
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vgmopen(1) Khoros vgmopen(1)
PROGRAM
vgmopen - Open a greyscale image X, by a structuring element
B.
SYNTAX
vgmopen
-i input image
-k input kernel
-o output image
[-V] Gives the version for vgmopen
[-U] Gives the usage for vgmopen
[-P] Prompts for command line options
[-A [file1]] Creates the answer file called vgmopen.ans or
file1
[-a [file1]] Uses vgmopen.ans or file1 as the answer file
DESCRIPTION
vgmopen computes the Opening of an greyscale image by a
structuring element.
This algorithms is taken from Digital Image Processing by
R.C. Gonzalez and R.E. Woods, Addison-Wesley, 1992. Erodes
X by B, then Dilates the result by B. The result is
clipped to the range [0-255]. Valid values of B(x,y) are in
the range [0 - 255]. Pixels in B that are not part of the
domain of B should be negative. For this reason, the
structuring element is of type 'int'.
REQUIRED ARGUMENTS
-i type: infile
desc: input image
-k type: infile
desc: input kernel
-o type: outfile
desc: output image
OPTIONAL ARGUMENTS
none
EXAMPLES
vgmopen -i image1 -k kernel -o image2
Computes the opening of an image X (intput -i) by a struc-
turing element B (input -k) and stores the result in the
output image ( -o).
SEE ALSO
intro(1), verror(3), vgparms(3), vutils(3), lvgmopen(3)
vmcustom(1), lvmcustom(3)
RESTRICTIONS
vgmopen accepts only BYTE images, and the kernel must be
type INT.
COPYRIGHT
Copyright 1992, University of New Mexico. All rights
reserved.
Khoros Release: 1.0 1