
vsqrt(1)                     Khoros                      vsqrt(1)

PROGRAM
     vsqrt - Compute the square root of an image pixel by pixel.

SYNTAX
     vsqrt

     -i             input image

     -o             resulting output image

     [-m]           square root operation masking image

     [-V]           Gives the version for vsqrt

     [-U]           Gives the usage for vsqrt

     [-P]           Prompts for command line options

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

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

DESCRIPTION
     vsqrt computes the square root of each pixel, with an opera-
     tion gating image.  Negative pixels are set to zero.

     The optional mask image must be of the same data type as the
     input image, and is used to gate the operation.  A non-zero
     mask pixel enables the output pixel to contain the square
     root.  A zero mask pixel just transfers the value of the
     corresponding pixel in the first input image to the output
     pixel.

REQUIRED ARGUMENTS
     -i     type: infile
            desc: input image

     -o     type: outfile
            desc: resulting output image

OPTIONAL ARGUMENTS
     -m     type: infile
            desc: square root operation masking image

EXAMPLES
     vsqrt -i input.image -o output.image -m mask.image

     This takes the square root of each pixel in input.image
     using the mask mask.image and places the resulting image in
     output.image.

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

RESTRICTIONS
     vsqrt will not operate on:
          Transform, Complex, and Bit
     data storage types.

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

Khoros                    Release: 1.0                          1

