05594469 is referenced by 830 patents and cites 3 patents.

A system for the control from a distance of machines having displays incls hand gesture detection in which the hand gesture causes movement of an on-screen hand icon over an on-screen machine control icon, with the hand icon moving the machine control icon in accordance with sensed hand movements to effectuate machine control. In one embodiment, TV control led by hand signals includes detecting a single hand gesture and providing a hand icon on the screen along with the provision of icons representing TV controls such as volume, channel, color, density, etc., in which a television camera detects the hand in a noisy background through correlation techniques based on values of local image orientation. In order to trigger the system into operation, a trigger gesture such as the "how" sign is distinguished from the background through the utilization of orientation angle differences. From correlation values based on correlating local orientations between a mask defining a particular hand and the later acquired image of the hand, normalized correlation scores for each pixel are obtained, with the correlation peak being detected and then thresholded to eliminate false alarms.

Title
Hand gesture machine control system
Application Number
8/391955
Publication Number
5594469
Application Date
February 21, 1995
Publication Date
January 14, 1997
Inventor
Craig D Weissman
Coral Springs
FL, US
William T Freeman
Newton
MA, US
Agent
Robert K Tendler Esq
Assignee
Mitsubishi Electric Information Technology Center America
MA, US
IPC
G09G 5/08
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