Location and recognition of flashlight projections for visual interfaces

• Published in: Proceedings of the 17th International Conference on Pattern Recognition, 2004. ICPR 2004 Vol. 4; pp. 949 - 952 Vol.4
• Main Authors: Green, J., Pridmore, T., Benford, S., Ghali, A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2004
• Subjects: Cameras; Computer science; Computerized monitoring; Data mining; Displays; Image recognition; Image sequences; Reflectivity; Robustness; Space technology
• ISBN: 0769521282; 9780769521282
• ISSN: 1051-4651; 2831-7475
• DOI: 10.1109/ICPR.2004.1333930

We consider the location and recognition of flashlight projections given the image sequence supplied by a fixed camera monitoring a physical surface. A quotient method extracts a description of the flashlight projection that is independent of the reflectance of the illuminated surface. The information recovered is used to recognise individual flashlights and trigger audiovisual events in response to users' actions. A demonstration application, an interactive poster, is described and directions for future work identified.