![]() The problem is if you've got any grain for example, the anti aliaser might see it as an edge and make it more visible. Here's catmull rom, here it actually darkens the pixels either side of your edges so it has more contrast and appears sharper. This is the gaussian filter, the middle of it is the pixels being anti aliased, the sides are the edges around it - what this filter does is softens the pixels arond so they gradually ramp together - it's blurring the area where they meet. On this page you can see a lot of different diagrams that show how this contrast is applied. If you've got a dark and a light edge meeting, it'll darken the row of pixels on the dark side and brighten the light ones to give them more contrast and thus more defined to your eye. What the catmull and other sharpening filter does is a colour correction wherever edges meet. ![]() ![]() ![]() To be honest I don't know if there's a major benefit in doing this - it was discussed before and vlado mentioned you're not going to get higher quality out of it or any speed benefits. ![]()
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