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April 2006
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2006.04.15 10:18 "Re: BigTIFF Suggestion", by <melser.anton@gmail.com>
> > This is probably a stupid comment... > > I thought you could create your own tags with tiff? I would be shocked > > to find that that wasn't the case with bigTiff (having strictly 0 > > knowledge of the aforementioned...)... so why not create your own tag > > and be done with it? > > Because a tag's logical scope is the IFD, not the file. > > Suppose that wouldn't be the case. Then each IFD unlink, or IFD append, > or IFD copy operation or whatever, had to scan through every IFD in the > file to find tags that it should change to reflect that operation. Even > more importantly, knowledge of all tags would be required for these > operations, and thus the whole scheme of private tags would be > invalidated. Like I said - it was probably a stupid comment! :-) Antoine -- This is where I should put some witty comment.