SPIE-the international society for optical engineering. SPIE-the international society of 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 of Optical Engineering. SPIE -- the International Society for Optical Engineering ; The International Society for Optical Engineering.