SPIE-the International Society for Optical Engineering. SPIE-the International Society for Optical Engineering ; SPIE--the International Society for Optical Engineering. SPIE-The International Society for Optical Engineering. SPIE--the International Society for Optical Engineering SPIE-The International Society for Optical Engineering SPIE--the International Society for Optical Engineering. SPIE--The International Society for Optical Engineering. The International Society for Optical Engineering. SPIE-The International Socety for Optical Engineering.