DragonFly On-Line Manual Pages
Scale a .PNG image using the fast implementation of the Scale effects(1)
DragonFly General Commands Manual
NAME
scalex - Scale a .PNG image using the fast implementation of the Scale
effects
SYNOPSIS
scalex [-k 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
resolutions.
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 fast implementation of the Scale effects is used. It imposes some
limitations of the type of the image usable. Specifically :
o Only the pixel sizes of 1, 2 and 4 bytes are supported. If the
image has another pixel size it's automatically converted.
OPTIONS
-k N, --scale N
Select the scale factor. Available values are 2, 2x3, 2x4, 3,
and 4.
COPYRIGHT
This file is Copyright (C) 2003, 2004 Andrea Mazzoleni
Scale a .PNG image using the fast implementation of the Scale effects(1)