08345920 is referenced by 34 patents and cites 114 patents.

One embodiment of the invention includes a gesture recognition interface system. The interface system may comprise at least one light source positioned to illuminate a first side of a light-diffusive screen. The interface system may also comprise at least one camera positioned on a second side of the light-diffusive screen, the second side being opposite the first side, and configured to receive a plurality of images based on a brightness contrast difference between the light-diffusive screen and an input object. The interface system may further comprise a controller configured to determine a given input gesture based on changes in relative locations of the input object in the plurality of images. The controller may further be configured to initiate a device input associated with the given input gesture.

Title
Gesture recognition interface system with a light-diffusive screen
Application Number
12/143529
Publication Number
8345920 (B2)
Application Date
June 20, 2008
Publication Date
January 1, 2013
Inventor
H Keith Nishihara
Los Altos
CA, US
Bran Ferren
Beverly Hills
CA, US
Agent
Tarolli Sundheim Covell & Tummino
Assignee
Northrop Grumman Systems Corporation
VA, US
IPC
G06K 9/00
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