This is the command pextrem that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
pextrem - find minimum and maximum values in RADIANCE picture
SYNOPSIS
pextrem [ -o ] [ picture ]
DESCRIPTION
Pextrem locates the minimum and maximum values for the input picture, and prints their
pixel locations and color values. The first line printed contains the x and y pixel
location (x measured from the left margin, y measured from the bottom), followed by the
red, green and blue values. The second line printed contains the same information for the
maximum value.
The -o option prints the original (radiance) values, undoing any exposure or color
correction done on the picture.
If no input picture is given, the standard input is read.
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