
vinvert(1)                   Khoros                    vinvert(1)

PROGRAM
     vinvert - Inverts the gray-levels of a byte type image.

SYNTAX
     vinvert

     -i             input image

     -o             output image

     [-V]           Gives the version for vinvert

     [-U]           Gives the usage for vinvert

     [-P]           Prompts for command line options

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

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

DESCRIPTION
     vinvert inverts the gray-levels of a byte type image. Invert
     (photonegative) is very useful when looking for faint
     features on a dark background.  All that is really done is
     that each pixel in the image is subtracted from 255.

REQUIRED ARGUMENTS
     -i     type: infile
            desc: input image

     -o     type: outfile
            desc: output image

OPTIONAL ARGUMENTS
     none

EXAMPLES
     vinvert -i input.image -o output.image

     This subtracts each pixel in input.image from 255 and places
     the result in output.image.

SEE ALSO
     intro(1), verror(3), vgparms(3), vutils(3), lvinvert(3)
     vnot(1), lvnot(3)

RESTRICTIONS
     vinvert will complain if asked to operate non-byte data
     storage type input images.

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

Khoros                    Release: 1.0                          1

