Re: [Openexr-devel] EXIF meta data attributes in headers

[Brendan Bolles]

On Jul 18, 2013, at 3:08 PM, Larry Gritz wrote:

> If you think any of these are supposed to represent the same data, you can 
> get into problems when an app reads the EXR file, just copies XMP to output, 
> but changes one of the related OpenEXR fields. Then you end up with an output 
> file that has metadata that in some sense contradicts itself.


In most cases I imagine they'll only have one form of metadata coming in and 
any other EXR attributes they add will be parsed from that source.

For example, I currently get ICC profiles from the Adobe apps, which I then 
parse out to make Chromaticity attributes.  But an ICC profile can have 
information that can't be reconstructed from chromaticities, so that's why I 
embed the whole thing as well.

Anyway, let's not let perfect become the enemy of good.  The benefit of getting 
more metadata outweighs the risk of getting conflicting metadata, which I would 
call a bug for the app developer.


Brendan