RE: [Openexr-devel] RAW images in OpenEXR?

[Bob Friesenhahn]

On Tue, 6 May 2008, Chris Cox wrote:

> Why would you want something un-EXR like in EXR?

Because they are not EXR? :-)

> Why not use existing open standards for camera RAW images?
>
> See http://www.adobe.com/products/dng/index.html
> and http://www.adobe.com/support/downloads/dng/dng_sdk.html

While DNG itself seems fine, I discovered a bug related to the Adobe 
DNG Software Development Kit (SDK).  The download link for free 
unencumbered portable open source does not appear to be working at the 
moment.

The common theme with RAW images seems to be abject horror that 
sometime in the distant future, someone will invent an algorithm which 
is able extract an extra 10 parts per million of image quality from 
today's RAW image files, thereby completely invalidating already 
translated files.  As a result, it is necessary to keep the RAW data 
available for the rest of time in case such an algorithm is invented. 
Without this fear, people would simply use the best quality existing 
software (e.g. 'dcraw') to convert to excellent-quality 16-bits/sample 
lossless TIFF files and delete the original Bayer data.

Bob
======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/