[Tig] Content of DPX user space a secret?

Bob Friesenhahn bfriesen
Fri May 20 19:19:07 BST 2005

On Fri, 20 May 2005, Martin Parsons wrote:

> Bob Friesenhahn wrote:
>> For example, why would a datacine add user data unless it was expected
>> that some software (or hardware) would make sense out of it?
> The Spirit Datacine puts a flag in the DPX header to indicate whether the
> data is in log, linear or printing density.

The flag you are referring to is likely the "Transfer Characteristic" 
field which does indeed have options for Printing Density, Linear, and 
Log.  This is a standard part of the DPX header and not related to the 
optional user data.

Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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