
Cantata(Subform)             Khoros              Cantata(Subform)

     UNARY ARITHMETIC OPERATIONS

     These routines use one image to produce a single output
     image.  The operations performed are arithmetic point opera-
     tions done on a pixel by pixel basis.  Several of the opera-
     tions may be used with an optional masking image.

     SHORT DESCRIPTION OF ROUTINES

     Absolute Value -    Compute the absolute value of an image
                         pixel by pixel.

     Logarithm -         Compute the logarithm of an image pixel
                         by pixel.

     Exponential -       Compute the base 10 antilogarithm of an
                         image with an operation gating image.

     Square Root -       Compute the square root of an image
                         pixel by pixel.

     Offset -            Add a specified offset to each pixel in
                         the input image.

     Scale -             Multiply (scale) an image by a constant.

     Normalize -         Normalize an image, forcing the pixel
                         values to lie within a specified range.

     Not -               Compliment an image by subtracting pixel
                         values from a constant.

     Invert -            Inverts the gray-levels of a  BYTE type
                         image.

     Floor -             Clip the lowest levels of an image to a
                         constant value.

     Substitute -        Substitute the value of a pixel for
                         another value.

     Clip -              Clip the grange of gray level values.

     Conjugate -         Complex conjugate an image pixel by
                         pixel.

                         Copyright 1991, University of New Mex-
                         ico. All rights reserved.

Khoros                    Release: 1.0                          1

