"Gabe Schaffer" on wrote...
| On 2/5/07, pawe³ wolañski <[EMAIL PROTECTED]> wrote:
| > Hello! I've got question about IM Q16 & Q8. What's a difference
| > between that two versions? I know, that Q16 version takes 2 times
| > more memory than Q8. But is that so great precision in algorithm is
| > needed in converting jpegs, gif or pngs (I need IM for converting
| > that types of formats) &
|
| JPEG and GIF only have 8-bit versions, so there will almost certainly
| be no benefit to using Q16. It is possible to have 16-bit PNGs, but if
| you have to ask, you probably don't have to worry about it.
|
| GNS
|
If there is any benifit it is in holding the extra precision during
processing of images. Particularly heavy mathematical processing in
generating shaded images, distortion, and convolution processing and
enhancements of very dark and light photos.
Reply-To: Anthony Thyssen <[EMAIL PROTECTED]>
X-URL: http://www.cit.gu.edu.au/~anthony/
X-Face: "iO`19c"sFVLnS(9,80^_E^BqA&Ta,05p2lA`FWO.d8el_~lo2k2}{t#~Y{~M!hPV?Augr<
d1w9Ai$pen`'0!Hn;}TZMK*}\N_"c)g8B>@'%'}9d\,<K6+2"DNx9B1m')c20"he.(7JQ@
fC*v&[(q49YDTFrdiogp*OIG&6!H2U]PS{bwKpQMk9]nHp2!#xh3/)xA";B'%*[{
Fcc: +outbox
The drawback in not only more memory but also lots more processing.
You shouldn't need to worry about it, except if you use color level
arguments that are not percentages.
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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