RLEHISTO(1)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 indi‐
cates 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 his‐
togram. This is useful if most pixels are colored the back‐
ground 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 ALSOurt(1), RLE(5).
AUTHORS
Gregg Townsend, University of Arizona; Rod Bogart, University of Utah.
4th Berkeley Distribution June 25, 1990 RLEHISTO(1)