two relevant papers http://spie.org/x648.html?product_id=872231 http://spie.org/x648.html?product_id=872231 http://spie.org/x648.html?product_id=872230 http:/

two relevant papers http://spie.org/x648.html?product_id=872231 http://spie.org/x648.html?product_id=872231 http://spie.org/x648.html?product_id=872230 http://spie.org/x648.html?product_id=872230 from SPIE Electronic Imaging 2011 conference in San Francisco