Seeing through the Fog: An Algorithm for Fast and Accurate Touch Detection in Optical Tabletop Surfaces

dc.contributor.author	Wolfe, Christopher
dc.contributor.author	Graham, T.C.Nicholas
dc.contributor.author	Pape, Joseph A.
dc.date.accessioned	2015-07-30T20:22:47Z
dc.date.accessioned	2015-07-30T23:01:06Z
dc.date.available	2015-07-30T20:22:47Z
dc.date.available	2015-07-30T23:01:06Z
dc.date.issued	2010
dc.description.abstract	Fast and accurate touch detection is critical to the usability of multi-touch tabletops. In optical tabletops, such as those using the popular FTIR and DI technologies, this requires efficient and effective noise reduction to enhance touches in the camera's input. Common approaches to noise reduction do not scale to larger tables, leaving designers with a choice between accuracy problems and expensive hardware. In this paper, we present a novel noise reduction algorithm that provides better touch recognition than current alternatives, particularly in noisy environments, without imposing higher computational cost. We empirically compare our algorithm to other noise reduction approaches using data collected from tabletops at research labs in Canada and Europe.	en_US
dc.description.refereed	Yes	en_US
dc.identifier.doi	10.1145/1936652.1936666
dc.identifier.uri	http://hdl.handle.net/1880/50508
dc.identifier.uri	http://hdl.handle.net/1880/50764
dc.publisher	ACM	en_US
dc.publisher.url	http://dx.doi.org/10.1145/1936652.1936666	en_US
dc.title	Seeing through the Fog: An Algorithm for Fast and Accurate Touch Detection in Optical Tabletop Surfaces	en_US
dc.type	unknown