vqmed(1)

PROGRAM
vqmed - Perform a median filter on an image using quicksort to find the median value.

SYNTAX

vqmed

-i  input image

-o  resulting output image

-w  filter width

-h  filter height

[-V]
    Gives the version for vqmed

[-U]
    Gives the usage for vqmed

[-P]
    Prompts for command line options

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

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

DESCRIPTION
vqmed computes a two dimensional median filter of width w and height h over the given image, img. The median is computed by moving a w by h pixel mask over the image and sorting the masked values. The value of the median filter is the (masksize+1)/2 th value in the sorted array.

The resulting image is of the same type as the input image.

REQUIRED ARGUMENTS

-i  type: infile
    desc: input image

-o  type: outfile
    desc: resulting output image

-w  type: integer
    desc: filter width

-h  type: integer
    desc: filter height

OPTIONAL ARGUMENTS
none

EXAMPLES
vqmed -i input.image -o output.image -w 3 -h 3

This command performs a median filter of width 3 and height 3 on input.image and stores the result in output.image.

SEE ALSO
intro(1), verror(3), vgparms(3), vutils(3), lvqmed(3) vhmed(1)

RESTRICTIONS
vqmed will not operate on data storage type complex.

COPYRIGHT
Copyright 1992, University of New Mexico. All rights reserved.