Oleguer Vilella nous apporta ses lumieres ainsi en ce 13/08/2004 02:14... :

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>>1 mt = 100 cmt then 1200x900 cmt = 12x9 mt.
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>>Anyway the resolution is more related to the printer resolution, if your
>>printer has by example a resolution of 300 dpi (dot per inch) and you
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>image
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>>is 1200x900 cm = to 472.4 x 354.3 inches then the image in pixels is =
>>141720 x 106290 or (1200/2,54*300)x(900/2,54*300). And yes, is freaking
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>huge
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>>:D
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>>Salu2.
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Often, for large images (over a feet whide or high, even more so for 
around a meter), you are assumed to look from some distance. Taking this 
into consideration, it can be possible to use a MUCH lower resolution 
and use rescaling when printing. Just look at advertisement in the metro 
(if your city have one), or street level billboards. If you look close, 
it's *VERY* grainy, but get's OK if you get back a few steps, even 1 
meter is generaly enough. It's very easy to print 100*100 dots for every 
1*1 pixel... and using error diffusion dithering, you may never notice 
that each pixel is repeated 100*100 times.
Remember that you can print a 72 DPI image at 1600 DPI, without 
shrinking it, it just have a lot of very fine dithering.

Alain

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