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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."
Excellent point. Just to be safe though, I'm going to take another look through my porn crypt to see if that's true.
BRB.
Well, I am SURE glad I'm using Linux^H^H^H^H^HWindows^H^H^H^H^H^H^HMac^H^H^Hshit.
It is pitch black. You are likely to be eaten by a grue.
I've been telling people for years that I look better in person.
I told them that there's something wrong with pictures of me.
HA!
Now I know.
It's the Scaling Algorithm BUG!
I am sure the Chinese government prefers the current implementation.
Well?
Well?
Somehow I don't think you've given him enough time.
Having read that I am willing to be English isn't his first language
I am willing to be Mavis Beacon.
The 270-year-old professional portrait artist tells me there is just a difference and photography hasn't made it up yet. He isn't giving up his canvas and I can't really blame him. I guess this isn't the film's fault and it shouldn't affect anything if the subject can be made to hold motionless for several minutes in a brightly-lit setting, but it makes you question if human-driven devices and systems should be abandoned at the current rates.
I don't think you want the results he has to present...
Check the Gimp bug database. It has complaints going back many many years. Trouble is, a bug report is easy to ignore and/or misunderstand.
Getting this fixed requires sitting down with all the core developers and using small words until it sinks into their thick skulls.
He seems to take it seriously.
Probably a gamma nazi...
Brain surgery - it's not rocket science!
Well, I RTFA and I completely understand why this is happening...the so called "sample photo" is covered with annoying little gray lines. No wonder the picture looks bad when you scale it. The dude needs a new camera.