David Akers Frank Losasso Jeff Klingner Maneesh Agrawala John Rick Pat Hanrahan Conveying Shape and Features with Image-Based Relighting. 349-354 2003 conf/visualization/2003 IEEE Visualization db/conf/visualization/visualization2003.html#AkersLKARH03 http://doi.ieeecomputersociety.org/10.1109/VISUAL.2003.1250392