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Paint.Net doesn't handle scaling properly (gamma error)


Ilko
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Since I do fansub, I work with avisynth+ and came to something very interesting. Most of softwares in the world don't handle scaling properly (even very expensive softs), including PDN. It seems to be an error of gamma interpretation.

 

If you try to resize this image :

gamma_dalai_lama_gray.jpg

 

You'll get this result, or worse :

gamma_dalai_lama_gray_scaled.jpg

 

Also, try scaling this one to 1:2 :

gamma-1.0-or-2.2.png

 

 

Here is the source, a full detailed article on how it works and possible solutions :

http://www.ericbrasseur.org/gamma.html

 

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Yeah, this is verrrrrrrrry old news. Fixing this requires an enormous amount of work -- likely inspecting and recoding every single piece of rendering code within the app. Highly unlikely it'll happen. (Just trying to set reasonable expectations ...)

The Paint.NET Blog: https://blog.getpaint.net/

Donations are always appreciated! https://www.getpaint.net/donate.html

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A plugin could resize down, leaving a blank/colored margin. You'd have to manually crop that.

 

Resizing up will run into the problem that the larger image will be cropped at the current canvas edge unless you expand the canvas before running the plugin ?

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