This feature I think is particularly useful for web and graphic designers who make have to take graphics and bits of artwork from Google images and can only find a graphics over a solid white or black background (i.e. NOTE: This feature will only be available for layers that have a mask which is what is cutting away the background around your photo subject.
Go Layer>Matting>Color Decontaminate and use the slider to find the sweet spot for the edge of your selected object. We’re going to use Color Decontaminate to either kill off, or blend back in the color fringe(matte) that is on that masked object/model. Check out my image above and see just how complex that masked edge around her hair is. If you have an object that has been cut out with a mask, you can use the Color Decontamination feature. Hit OK and let Photoshop do its thing! 2. Simply select the layer with the fringe on it and go Layer>Matting>Defringe and typically I defringe between 1-3 pixels depending on how much fringe it there. we’ve deleted those pixels around our object) we can use the Defringe command in Photoshop to help clean up little residual bits of color that have been left behind by the other image. When we have cut out an object from one image and we haven’t used a mask (i.e. If you make selections or work with graphics moving them from light to dark backgrounds (or vice versa,) you will find great info in this tutorial! 1. We will cover Color Decontamination, Defringe in Photoshop, Color Decontamination in Refine Edge, and Removing Black and White Matte.
In this tutorial, we’re going to explore what to do with an object or image once we have cut it out and how to really clean up the edges and get rid of stray color that may be plaguing your images.