Hoff, William A.; Nguyen, Khoi; Lyon, Torsten (1996-10-29). "Computer-vision-based registration techniques for augmented reality". In Casasent, David P. (ed.). Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling. Proceedings of SPIE. Vol. 2904. SPIE. pp. 538–548. Bibcode:1996SPIE.2904..538H. doi:10.1117/12.256311. S2CID6587175.
Hoff, William A.; Nguyen, Khoi; Lyon, Torsten (1996-10-29). "Computer-vision-based registration techniques for augmented reality". In Casasent, David P. (ed.). Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling. Proceedings of SPIE. Vol. 2904. SPIE. pp. 538–548. Bibcode:1996SPIE.2904..538H. doi:10.1117/12.256311. S2CID6587175.
Hoff, William A.; Nguyen, Khoi; Lyon, Torsten (1996-10-29). "Computer-vision-based registration techniques for augmented reality". In Casasent, David P. (ed.). Intelligent Robots and Computer Vision XV: Algorithms, Techniques,Active Vision, and Materials Handling. Proceedings of SPIE. Vol. 2904. SPIE. pp. 538–548. Bibcode:1996SPIE.2904..538H. doi:10.1117/12.256311. S2CID6587175.