Questiosn about the technique of smoothing transitions between color fields within an image. Anti-aliasing is used in digital photography, computer graphics, digital audio, and many other applications.

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Correct anti-aliasing color when moving to a new background?

look at the bottom of the two lines To make the line appear smooth, intermediate colors between the color of the background and the line have been added at its edge. In this case, black has been ...
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Apply map to rgba values in Paint.NET

I have a PNG image containing a white shape on an orange background. In the existing image, the orange-white edges have a gradient so they appear smooth. I would like the background colour to be ...