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Domain: 4p8.com
Stories and comments across the archive that link to 4p8.com.
Stories · 2
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Scaling Algorithm Bug In Gimp, Photoshop, Others
Wescotte writes "There is an important error in most photography scaling algorithms. All software tested has the problem: The Gimp, Adobe Photoshop, CinePaint, Nip2, ImageMagick, GQview, Eye of Gnome, Paint, and Krita. The problem exists across three different operating systems: Linux, Mac OS X, and Windows. (These exceptions have subsequently been reported — this software does not suffer from the problem: the Netpbm toolkit for graphic manipulations, the developing 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 scaled with the affected software are degraded, because of incorrect algorithmic accounting for monitor gamma. The degradation is often faint, but probably most pictures contain at least an array where the degradation is clearly visible. I believe this has happened since the first versions of these programs, maybe 20 years ago." -
Images of Apollo Landing Sites Soon Available
eric.brasseur writes "The Lunar Reconnaissance Orbiter has entered lunar orbit in perfect shape. From a height of 50 km, it will image the Moon in high resolution. The hardware left by the Apollo missions will be clearly visible. The Soviet automatic probes will also be photographed. Previous best images were made by the Japanese probe Kaguya and showed a white patch where the dust had been blown away by the blast of the LM engine."