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!
AUTHOR¶
pngcomp was written by Stuart Coyle <stuart@cybertherial.com>.
This manual page was written by Nelson A. de Oliveira <naoliv@gmail.com>,
for the Debian project (but may be used by others).