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January 2004
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2004.01.22 07:39 "Re: change fax resolution", by Andrey Kiselev
On Thu, Jan 22, 2004 at 03:13:12AM +0100, Joris wrote: > > 2 - Reduce the height to 50%, so I get a PNG image of 1728x1140 > > using something like ImageMagick > > Alternatively, you could do the resampling yourself. It's really not > that difficult, and can be very fast, since you reduce each group of 2 > pixels to a single pixel. But of course, doing just that, you end up > with 3 different grayscale values including black and white, instead > of just black and white. Why not just skip every 2nd line in the input image? It should give similar results, I guess. Andrey -- Andrey V. Kiselev Home phone: +7 812 5274898 ICQ# 26871517