PIXSTAT(1)

NAME
pixstat - list statistics related to a color pix image

SYNOPSIS

pixstat [-v] [file.pix]

DESCRIPTION

pixstat will take the given pix(5) format file, or read from standard in. A collection of statistics related to the pixel intensities is produced for each color plane (red, green, and blue). These include: the number of pixels (and the square root of this which is the file dimensions if square); the max and min values; the mean; the median (dividing line where half the pixels are above this value, half below); the mode (most frequently occurring value) and the number of pixels at this value; the variance, standard deviation, and skew.

The -v flag will also dump a histogram of the pixel values.

METHOD

Since the pixel values are quantized (each color having discrete values from 0 to 255), the statistics can be computed from "lump sums" after building a histogram of the input. This results in a fantastic savings in computation while also making a single pass over the input file sufficient.

SEE ALSO

brlcad(1), pixhist(1), bwstat(1), pix(5)

AUTHOR

BRL-CAD Team

COPYRIGHT

This software is Copyright (c) 1989-2021 by the United States Government as represented by U.S. Army Research Laboratory.

BUG REPORTS

Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org