I found this old tutorial from Anita and gave it a try. I have not seen this one around for a while.
Ctrl J to copy
Ctrl+Shift+U to remove color.
Ctrl J to copy the black and white layer. On this layer Ctrl I to invert.
Change the blendmode on the inverted layer to color Dodge.
Go to filter, other, Minimum. I used 4 pixels.
Now go back to the original layer(the one with color) Ctrl J
Drag that layer to the top and reduce the opacity.
Merge the top three layers so you are left with two layers.
Ctrl J to copy
Go to filter, Artistic, Poster Edges. Play with the opacity until you get something you like
Have Fun
Tina B