2004.02.24 15:54 "Re: [Tiff] Support for 16-bits per sample images", by Bob Friesenhahn

Does the libtiff library supports 16-bits per sample images for both RGB and CMYK images?

If Yes, then what is the latest version that supports it?

Also, I found that, the version that i have, does have some level of support for 16-bit RGB images, but it just truncates the data from 16-bits to 8-bits to store it as an 8-bit image. Is this statement correct?

What the other guys have told you on this list is that libtiff is capable of producing the original 16-bit data, but the interfaces require that you parse the data in your own application. Care must be taken since 16-bit TIFF can be big or little endian and the data is not re-ordered for you.

For working open-source examples, you can see GraphicsMagick (http://www.graphicsmagick.org/) or ImageMagick (http://www.imagemagick.org/), both of which support 16-bit TIFF.

Bob

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Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen