Sensor fusion III : 3-D perception and recognition : 5-8 November 1990, Boston, Massachusetts
Data structures and target classification : 1-2 April 1991, Orlando, Florida
Integrated optics and optoelectronics II : 17-19 September 1990, San Jose, California
Optical data storage : 5-7 March 1990, Vancouver, Canada
Optical thin films III : new developments ; 9-11 July 1990, San Diego, California
Optical information-processing systems and architectures II : 9-13 July 1990, San Diego, California