2005.01.21 21:13 "Re: [Tiff] 8 bits per sample", by Frank Warmerdam
I am extracting tif data 8 bits/sample colour pixels. It seems that each pixel contains 8bits of colour information. If I open the tif in Paintshop Pro I can see that it consist of a 256 colour palette.
How do n convert this to a 24 bit RGB value for display?
Frans,
You can use the tiff2rgba command line utiilty which actually writes a 32bit (Red, green, blue, alpha) TIFF file. Use the -n flag if you don't want it emitting alpha values.
Programmatically you an use the TIFFReadRGBAImage() function.
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