[Date Index] [Thread Index] [Author Index]

Re: 12-bit Tiffs importable?

• To: mathgroup at smc.vnet.net
• Subject: [mg24506] Re: 12-bit Tiffs importable?
• From: "P.J. Hinton" <paulh at wolfram.com>
• Date: Thu, 20 Jul 2000 03:01:45 -0400 (EDT)
• Organization: Wolfram Research, Inc.
• References: <8l3eq0$kp6@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

On 19 Jul 2000 owenzooey at my-deja.com wrote:

> I'm trying to import a 12-bit tiff scan acquired with Image Pro
> Express and get and error for invalid tiff format.  Can only 8 bit
> tiffs be imported?

You'll have to be a little clearer by what you mean by a 12-bit TIFF
scan.  Judging from the information at Image Pro Express' website:

http://www.mediacy.com/ipe.htm

I assume that you're referring to 12-bit gray scales.

The TIFF import code adheres to the TIFF revision 6 standard:

http://partners.adobe.com/asn/developer/PDFS/TN/TIFF6.pdf

Only grayscales of 4- and 8-bits per sample are allowed in the
standard.  Your software must be relying on some vendor-specific
extension.

-- 
P.J. Hinton
User Interface Programmer                         paulh at wolfram.com
Wolfram Research, Inc.
Disclaimer: Opinions expressed herein are those of the author alone.