08589824 is referenced by 9 patents and cites 99 patents.

A system and method is provided for a gesture recognition interface system. The interface system may comprise a first and second light source positioned to illuminate a background surface. The interface system may also comprise at least one camera operative to receive a first plurality of images based on a first reflected light contrast difference between the background surface and a sensorless input object caused by the first light source and a second plurality of images based on a second reflected light contrast difference between the background surface and the sensorless input object caused by the second light source. The interface system may further comprise a controller operative to determine a given input gesture based on changes in relative locations of the sensorless input object in the first plurality of images and the second plurality of images. The controller may further be operative to initiate a device input associated with the given input gesture.

Title
Gesture recognition interface system
Application Number
11/485788
Publication Number
8589824 (B2)
Application Date
July 13, 2006
Publication Date
November 19, 2013
Inventor
Shi Ping Hsu
Pasadena
CA, US
H Keith Nishihara
Los Altos
CA, US
William Daniel Hillis
Encino
CA, US
Agent
Tarolli Sundheim Covell & Tummino
Assignee
Northrop Grumman Systems Corporation
VA, US
IPC
G06F 3/033
View Original Source