http://4.bp.blogspot.com/-VthuYPiHyM...leavesSTSM.jpg
.
http://1.bp.blogspot.com/-R1wy1Y2uNX...leavesSTSM.jpg
.
http://4.bp.blogspot.com/-UnqYBUg8vW...eaves2STSM.jpg

Here the stereo serves to separate the foreground and background.