LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
April 2005
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2005.04.15 19:19 "Re: TIFF Technote 3, draft 2", by Chris Cox
> All this is good news. It would be useful if the specification > would specify a normalized range for the "viewable" data. For > example, it would helpful if there was a standard way to convert > back and forth between normal integer type RGB and float RGB. It > can be expected that dynamic range will be lost when converting to > unsigned RGB but the resulting image should look normal. > > Is it possible to provide recommendations for this without stepping > on someone's toes? I can provide a recommendation about range for viewing - but that's about all it is. 1.0 should be diffuse white in the scene, specular highlights can go over -- this matches typical camera behavior and provides a useful image to preview using a trivial (1.0 -> 255, 0.0 -> 0) mapping. Converting is another story, and optimal conversions are VERY image dependent when dealing with HDR data. Chris