Almost all graphic software scales incorrectly - Printable Version

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Almost all graphic software scales incorrectly - shuttertalk - Feb 23, 2010

Interesting research done by this guy - apparently almost all software (even major ones like photoshop) use an incorrect algorithm to scale / resize images. Basically, he claims that they assume that gamma in an image is linear, whereas it is actually exponential - so images turn out darker than they should.

The article with his findings is here:
http://www.4p8.com/eric.brasseur/gamma.html

A real world example for comparison is here:
http://www.4p8.com/eric.brasseur/gamma_17.html

To be honest I found the differences to be very minor, but I guess if you're fussy or if your work depends on accurate brightness / gamma, then it's good to know...

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