This is the command pngcomp 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
pngcomp - PNG (Portable Network Graphics) comparison tool
SYNOPSIS
pngcomp [-vVh] image1.png image2.png
DESCRIPTION
pngcomp gives some basic statistics about the difference between two images. It was
created as a measure of various color quantization methods.
OPTIONS
-v Verbose, does nothing as yet.
-V Version, prints version information.
-h Help, prints this message.
NOTES
The stats created by this program are purely based on the Euclidean distance in RGBA space
between the pixels of the images. Later versions will include different measures such as
CIE color space measurements and filters for perception models.
The error calculation used reflects the perceived quality of images only roughly.
To determine what image is better nothing can surpass having a look for yourself!
Use pngcomp online using onworks.net services
