photoshop how to remove the white edges left by the keying

Keying" is one of the most common operations in image processing, the image will be needed to accurately extract the subject part of the picture from the screen, known as keying, keying is an important basis for subsequent image processing.

With photoshop cc2014 keying and removal of keying left by the white edges of the method is:

1, open the ps software, open a picture, copy the layer, close the background layer in front of the small eyes;

2, with the "Magic Eraser Tool" click on the white background, clear the background, the picture of the subject of the lion, the lion, the lion, the lion, the lion, the lion, the lion, the lion, the lion, the lion, the lion and the lion. Clear the background, the picture of the subject of the lion was keyed out;

3, in the background layer above the new layer, "Edit - Fill", fill with black, this time it is obvious to see that the keyed out of the lion around the white edges;

4, open the "Layer - Trim", click on "Remove white edges";

5, according to the size of the white edges, you can also open the "Layer - Trim - Go Edge", set 'Go Edge' size (set to 1 pixel), OK;

6, close the "Layer 1" in front of the small eye, "File - Store as" png format image, remove the white edge left by the keying is complete.