Projector-camera systems (pro-cam), also called camera-projector systems,[1] augment a local surface with a projected captured image of a remote surface, creating a shared workspace for remote collaboration and communication. Projector-camera systems may also be used for artistic and entertainment purposes.[2] A pro-cam system consists of a vertical screen for implementing interpersonal space where front-facing videos are displayed, and a horizontal projected screen on the tabletop for implementing shared workspace where downward facing videos are overlapped. An automatically pre-warped image is sent to the projector to ensure that the horizontal screen appears undistorted.[1]
Examples
Pro-cam systems create a shared workspace between users with overlapping video technique which was invented by the researcher John Tang in Xerox PARC, 1991.[3]
^Tang, John C.; Minneman, Scott L. (1990-01-01). "VideoDraw: A video interface for collaborative drawing". Proceedings of the SIGCHI conference on Human factors in computing systems Empowering people - CHI '90. CHI '90. New York, NY, USA: ACM. pp. 313–320. doi:10.1145/97243.97302. ISBN978-0201509328. S2CID16650042.
^Yarosh, Svetlana; Cuzzort, Stephen; Müller, Hendrik; Abowd, Gregory D. (2009-01-01). "Developing a media space for remote synchronous parent-child interaction". Proceedings of the 8th International Conference on Interaction Design and Children. IDC '09. New York, NY, USA: ACM. pp. 97–105. doi:10.1145/1551788.1551806. ISBN9781605583952. S2CID16598004.
^Yarosh, Svetlana; Tang, Anthony; Mokashi, Sanika; Abowd, Gregory D. (2013-01-01). ""almost touching"". Proceedings of the 2013 conference on Computer supported cooperative work. CSCW '13. New York, NY, USA: ACM. pp. 181–192. doi:10.1145/2441776.2441798. ISBN9781450313315. S2CID18011295.