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The edges of a mesh show up as semi-transparent when rendered on a transparent background. Using the Set Alpha Node makes the edges opaque but fills them with black. I want the transparent edges filled with the same colors similar to GIMP's Threshold Alpha filter. How can I make those semi-transparent edges fully opaque with the color intact?

Image with transparency over a white background

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I'd use a set alpha, connecting the original image's alpha and color, and then add a color ramp onto the alpha. Then you can adjust the white to whatever level you want to be absolute opaque. You can change the interpolation to "Constant" as well.Image to set alpha, with alpha passing through color ramp

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