Re: [Gimp-user] Problem downsizing Tiff's
Also, because of the differences in compression types, some images that compress very well in TIFF's type of compression, compress very badly in JPG-type compression. The type of images that do this are images which have lots of very thin lines, in other words: blueprints. I don't have a good solution for saving this type of file in JPG. It really depends on why you want to re-save the file to JPG in the first place. I would like to add that JPG is supposed to be used with photographs. It's one of the least suitable formats you could use for drawings. Unnecessary big file size with unnecessary low quality. I really wonder how you could work with a quality of 40-50. You should have suffered from very bad artefacts... The best format would be a vector graphic as suggested. But from my experience it's hard to get a good one from pixel files. It might look good at one spot but on another some stuff is missing which you won't recognize from the beginning. My suggestion is to either use TIFF with compression (was already suggested) or to use PNG (or even GIF). The latter ones where designed to fit drawings. PNG is even lossless. GIF is somewhat obsolete but you might try it anyway. Typical compression rates in the files I use: uncompressed TIFF with 2-3 MB, PNG with 200-300 KB. Regards, Mathias ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Problem downsizing Tiff's
Mathias Lindner wrote: The best format would be a vector graphic as suggested. But from my experience it's hard to get a good one from pixel files. There are programs you can use that can convert (or try to convert) a bitmap image to a vector graphic one. One such option is Autotrace which you can get from SourceForge at http://autotrace.sourceforge.net/. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Problem downsizing Tiff's
Mathias Lindner wrote: The best format would be a vector graphic as suggested. But from my experience it's hard to get a good one from pixel files. There are programs you can use that can convert (or try to convert) a bitmap image to a vector graphic one. One such option is Autotrace which you can get from SourceForge at http://autotrace.sourceforge.net/. Thanks for all the replies. It might make my situation clearer if I explain that I do not need to maintain much quality when converting these drawings, except that I need to preserve s certain level of detail so that I can read them after I import them into the application for which I am trying to downsize. Of course, the problem that I have run into this morning was that my application was choking on the tiff files, and most of the solutions I tried either did not result in smaller files, or the smaller result was so fuzzy that I could not make out certain details I need in order to work with the drawings. I did manage to crop away unnecessary areas of the original tiffs, so was finally able to import them at their full resolution into my application so that I could complete my project. Will try all the mentioned solutions to see which yields the optimum results. I'm not certain my application can work with gif's, however. Thanks again. Caruso -- Carusoswi (via gimpusers.com) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
