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I've found that just converting it to grascale or desaturating the image can cause unwanted noise. It is fast, but kind of sloppy. Something slower and more manual, but with much less noise, is painting with color (either white or black both work). This is the method I've found that causes the least amount of noise to be introduced in the process. Just make sure you don't miss any pixels (and it would disqualify an image for the basic editing requirements). |
