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+ - Scaling algorithm bug in Photoshop/GIMP-> 1

Submitted by Wescotte
Wescotte (732385) writes "There is an important error in most photography scaling algorithms. All software tested have the problem: The Gimp, Adobe Photoshop, CinePaint, Nip2, ImageMagick, GQview, Eye of Gnome, Paint and Krita. Also three different operating systems were used: Linux, Mac OS X and Windows. These exceptions have subsequently been reported: the Netpbm toolkit for graphic manipulations, the developping GEGL toolkit, 32 bit encoded images in Photoshop CS3, the latest version of Image Analyzer, the image exporters in Aperture 1.5.6, the latest version of Rendera, Adobe Lightroom 1.4.1, Pixelmator for Mac OS X, Paint Shop Pro X2 and the Preview app in Mac OS X starting from version 10.6.

Photographs that have been scaled with these software have been degradated. The degradation is often faint but probably most pictures contain at least an array where the degradation is clearly visible. I suppose this happens since the first versions of these software, maybe 20 years ago."

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Comment: Re:That's a lot of money... (Score 1) 311

by rnpg1014 (#14637453) Attached to: 19 Charged in Alleged Software Piracy Plot
Well thanks for all the advice on what to do with iTunes, but if I don't use it on a PC, how will I go about installing songs onto my iPod without it freaking out? iTunes does have some anti-piracy features, such as not allowing buyers to download songs they have purchased more than once. I'll tell it not to manage my library and see if that works. My parents plan on buying a mac G5 though, so this might not be a problem for much longer :) And no, iTunes is not difficult to use, except for it wiping my library. To fix this I have to disable iTunes, plug in my iPod and open it up as a removable drive, copy the .m4a files and click-and-drag them into iTunes. Otherwise, iTunes updates my iPod when I plug it in, meaning it's updated to nothing.

And yes, jmnormand, you're right, the media probably does exaggerate the numbers...

"You don't go out and kick a mad dog. If you have a mad dog with rabies, you take a gun and shoot him." -- Pat Robertson, TV Evangelist, about Muammar Kadhafy

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