On Sun, Sep 13, 2009 at 4:33 PM, Gerard Meijssen gerard.meijssen@gmail.com wrote:
Hoi, John you are right. TIFF can be everything you describe. The question I am left with what is your point to this? Material is scanned without compression by GLAM, we get it per standard as TIFF files, we restore them. When the material is compressed, we do not restore them. We need to retain the original to demonstrate provenance. It is problematic to have files nobody can see in a standard way. This is why we need TIFF support, because otherwise we are likely find an admin who starts deleting this essential material.
My point is that we *can* _losslessly_ transcode TIFF files to PNG/MNG.
Provenance requires that we know where the original digitised copy is (an identifier), but we don't need to have a copy of the original TIFF if we have an PNG with the same quality.
TIFF support means we don't need to worry about transcoding, or have fights about TIFF vs PNG vs PDF/A. That will be good, as it is a hurdle with working GLAMs, but it is not preventing high quality images or working with GLAMs, as transcoding is not a difficult process.
The main problem at the moment is the upload limit.
-- John Vandenberg