DragonFly On-Line Manual Pages

RLEHISTO(1)            DragonFly General Commands Manual           RLEHISTO(1)

NAME
       rlehisto - generate histogram of RLE image.

SYNOPSIS
       rlehisto [ -b ] [ -c ] [ -t ] [ -h height ] [ -o outfile ] [ infile ]

DESCRIPTION
       Rlehisto counts the pixel values in an RLE file, producing an RLE file
       graphing frequency of occurrence.  The horizontal axis runs from pixel
       value 0 on the left to pixel value 255 on the right.  The height
       indicates the number of pixels seen for each pixel value.  Histograms
       are computed independently for each channel, scaled identically, and
       then overlaid.

       The following options are available:

       -b     Don't count the background pixel values when scaling the
              histogram.  This is useful if most pixels are colored the
              background color, so that the interesting part of the histogram
              would be too small.  This option is ignored if -c is specified.

       -c     Output cumulative values instead of discrete values.

       -t     Print the totals instead of generating the histogram as an RLE
              file.

       -h     height Scale the output image to the specified height.  The
              default is 256.

       -o outfile
              Direct the output to outfile.

SEE ALSO
       urt(1), RLE(5).

AUTHORS
       Gregg Townsend, University of Arizona; Rod Bogart, University of Utah.

4th Berkeley Distribution        June 25, 1990                     RLEHISTO(1)