1879130-A2 is referenced by 11 patents.

A system and method is provided for a gesture recognition interface system. The interface system may comprise a first and second light source (16,18) positioned to illuminate a background surface (20). The interface system may also comprise at least one camera (12,14) operative to receive a first plurality of images based on a first reflected light contrast difference between the background surface (20) and a sensorless input object caused by the first light source (16) and a second plurality of images based on a second reflected light contrast difference between the background surface (20) and the sensorless input object caused by the second light source (18).; The interface system may further comprise a controller (24) 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 (24) may further be operative to initiate a device input associated with the given input gesture.

Title
Gesture recognition interface system
Application Number
EP20070252716 20070706
Publication Number
1879130 (A2)
Application Date
July 6, 2007
Publication Date
January 16, 2008
Inventor
Hsu Shi Ping
US
Nishihara H Keith
US
Hillis William D
US
Assignee
Northrop Grumman
US
IPC
G06F 03/033
G06K 09/20
G06F 03/033
G06K 09/20
View Original Source Download PDF