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April 2004
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2004.04.22 22:31 "Re: Large TIFF files", by Joris Van Damme
Chris Cox wrote: > Yes, there is some desire to fix old problems with TIFF in addition > to extending the file length. OK, so there is, and I'm not saying there's not. What I am asking myself, and you, is, do you think it is preferable to - draw upon 15 years of experience - finally include 'new' style jpeg in the new spec - finally properly document the deflate compression in the new spec - make a proper list of practiced color spaces - investigate size limits of compression schemes as they are today - deciding upon new header/signature or - discussing human-friendly bloat ASCII tag names that are STILL code unfriendly, despite of the fact that nowadays hardware doesn't punish bloat stuff that severely anymore, by there very nature - start so many things all over again that you're bound to repeat history and cummulate all the scruff all over again in a completely new file format. In my opinion, if you prefer revolution over evolution, then here's one revolution that really does add something usefull: memory managment in the new TIFF file format. Since blocks are relocatable, but not managed, things are now readable and writable, but not (really) editable. A new file format > 4 gig would make memory managment provisions really worthwhile, due to its size and thus the enourmous cost of trans-read-writing whole files to simply change a few tags and add/delete a few pages. *That* is a worthwhile addition, ASCII tags are a nowadays very common waste, and re-inventing the wheel is wasting time and repeating history and cummulating same old new scruff all over again. Or at least, that's my opinion. Joris Van Damme info@awaresystems.be http://www.awaresystems.be Download your free TIFF tag viewer for windows here: http://www.awaresystems.be/imaging/tiff/astifftagviewer.html