2004.02.24 20:02 "[Tiff] Support for 16-bits per sample images", by
Thread
2004.02.24 19:14 "Re: [Tiff] Support for 16-bits per sample images", by Chris Cox
At 9:54 AM -0600 2/24/04, Bob Friesenhahn wrote: >On Tue, 24 Feb 2004 mayankg@iiitb.ac.in wrote:
>
>> Hi,
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.
If that is the case, that would be a major bug in LibTIFF -- because differencing predictors have to be applied/removed in native byte order.
LibTIFF should always convert the image data to native byte order before handing it off.
Chris