LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
March 2004
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
2004.03.10 15:40 "Re: 32 bit Floating point data type TIFF images", by Frank Warmerdam
Dlpnet wrote: > Hello, > > > > How exactly does TIFF support 32 bit Floating Point image data? What > > > is the range of values a pixel can take for a particular color, and > > > what is the "delta" (difference between successive values)? > > > > > > As already noted recently on this mailing list - there is no range of > > values. > > It's just floating point data. > > > Seeing this mail, I have a question: > I m interested in saving floating values into tiff file (and reading it > after of course), but I try to find information on google but nothing > really clear. Can any of you can send an example how to write floating > values in a tiff file and read it after ? Dlp, Use normal methods such as TIFFWriteScanline(), but use a float buffer (one float per pixel). When writing wet the TIFFTAG_BITSPERSAMPLE to 32 and the TIFFTAG_SAMPLEFORMAT to SAMPLEFORMAT_IEEEFP. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent