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October 2004
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2004.10.01 14:17 "Re: quad-tile", by Joris Van Damme
> The libtiffpic suite (thats where you got this, right?) This particular file comes from a compressed file named 'pics-3.6.1.tar.gz', that in turn comes from some LibTiff place (don't recall where exactly, but somewhere on your pages for sure). I seem to remember the was a similar testsuite in the 3.5.7 days, that also contained variants of this same image, though I never bothered to look at the tagsets more closely at that time. So probably its been around for quite a while. So if 'libtiffpic suite' is anything new, than you're referring to a source I know nothing about and this image did not come from. > includes a variety of > "problem" TIFF files that are non-standard as well as various standards > compliant files. While I don't recall all the history, I assume they exist > so we have samples of the weird variants to help us maintain various hacks > required to make them work. I understand. > So, I think the better solution might be to segregate our suite of test images > into files considered to be standard and valid, and those that are invalid but > that we want to work with anyways for purposes of interoperability. Yes, absolutely defenetly. > I have been leaving the sample image management up to Andrey though, so > perhaps he will have further thoughts. I do believe he is planning to augment > the set of test images as he works on a libtiff test suite. Ah, I was toying with the same idea. Seeing I can contribute so little C (let alone makefiles ;-)), perhaps this way I can ease Andrey's workload? If not, perhaps I can at least contribute a suggestion: a HTML index into the testimage, explaining what is what, and what is valid, and including tag dumps (and maybe even a reference thumbnail in a HTML-friendly and independent format like PNG) could increase the usefullness of a testimage suite tremendously. 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