Use the background rubber tool to pull out the picture has certain limits, the background part should not be too complex, preferably is a more single color, but also has the main body and the background part chromatic aberration value is bigger. This will only take a few short steps to pull out the desired picture.
Original
Final effect
1, open the picture, ctrl+j get Layer 1, click Red Circle, create Layer 2, placed in layer 1 and background layer, fill white as check effect and new background.
2, according to the diagram given the parameters, with the background eraser in the layer 1 rub it, pay attention to wipe when try not to let go, until the wipe clean.
3, said is wiped clean up, in fact, is not clean, we will see left a lot of edge noise, such as the red circle of the diagram.
4, to enlarge the figure to 400%, with the eraser tool to clear off the edge of the excess noise (brush size of about 5-7).
5, edge noise after cleaning up the effect.