SScaleaa..PNGiimageuusingttherreferenceiimplementationoofttheSScaleeeffects(1)NAMEscalerx - Scale a .PNG image using the reference implementation of the
Scale effects
SYNOPSISscalerx [-k N] [-w] [-r N] input.png output.png
DESCRIPTION
Scale2x, Scale3x and Scale4x are real-time graphics effects able to
increase the size of small bitmaps guessing the missing pixels without
blurring the images.
They were originally developed for the AdvanceMAME project in the year
2001 to improve the quality of old games running at low video resolu‐
tions.
The specification of the algorithm and more details are at:
http://scale2x.sourceforge.net
These command line tools read a .PNG file and write another image with
the effects applied.
The reference implementation of the Scale effects is used.
OPTIONS-k N, --scale N
Select the scale factor. Available values are 2, 2x3, 2x4, 3,
and 4.
-w, --wrap
Compute the image border for a wraparound effect.
-r N Select a specific revision of the effect. The default is scaleX
using algorithm ´x´ or ´1´. To select the new scaleK use algo‐
rithm ´k´ or ´2´. To scale an image without any effect use the
value ´0´. Other nunbers are alternative versions. Refers at
the source implementation for more details.
COPYRIGHT
This file is Copyright (C) 2003, 2004 Andrea Mazzoleni
Scale a .PNG image using the reference implementation of the Scale effects(1)