The last time I used "color to alpha" it didn't do anything to the non-white regions. This time it did. If I use "select by color" then clear the selections, I end up with pretty trashy edges. "color ...
The GNU Image Manipulation Program is a free editor that retouches and enhances images. GIMP 2.6 provides a "Color Picker Tool" that samples a small section of your image file. This color sample ...
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