vdiff(1)

PROGRAM
vdiff - Performs image differentiation by running 2 NxN weighted operators on an image.

SYNTAX

vdiff

-i1 input image filename

-i2 input kernel (operator) in X

-i3 input kernel (operator) in Y

-o  output image filename

[-V]
    Gives the version for vdiff

[-U]
    Gives the usage for vdiff

[-P]
    Prompts for command line options

[-A [file1]]
    Creates the answer file called vdiff.ans or file1

[-a [file1]]
    Uses vdiff.ans or file1 as the answer file

DESCRIPTION
vdiff performs image differentiation by running two NxN weighted operators on an image. It can be used to implement a Sobel filter.

vdiff only operates on BYTE type images. Both kernels must have the same dimensions. Kernels may be either type INTEGER or FLOAT.

REQUIRED ARGUMENTS

-i1 type: infile
    desc: input image filename

-i2 type: infile
    desc: input kernel (operator) in X

-i3 type: infile
    desc: input kernel (operator) in Y

-o  type: outfile
    desc: output image filename

OPTIONAL ARGUMENTS
none

EXAMPLES
vdiff -i1 input.image -i2 kernel.1 -i3 kernel.2 -o output.image

This command runs the two operator images on the input image and stores the results in output.image. If the appropriate kernels are used this could be a Sobel filter.

SEE ALSO
intro(1), verror(3), vgparms(3), vutils(3), lvdiff(3)

RESTRICTIONS
The input image must be of type BYTE and the kernels must be of type INTEGER or FLOAT.

COPYRIGHT
Copyright 1991, University of New Mexico. All rights reserved.