Gesture processing

• US 20110234492A1
• Filed: 05/13/2010
• Published: 09/29/2011
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Ajmera, Rahul, Madhvanath, Sriganesh, Subramanian, Anbumani
• Granted Patent: US 9,477,324 B2
• Time in Patent Office: Days
• US Class Current: 345/158
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

Presented is method and system for processing a gesture performed by a user of an input device. The method comprises detecting the gesture and determining a distance of the input device from a predetermined location. A user command is then determined based on the detected gesture and the determined distance.

Claims

1. A method of processing a gesture performed by a user of an input device, the method comprising:

detecting the gesture;

determining a distance of the input device from a predetermined location, the detected distance being for disambiguating the gesture; and

determining a user command based on the detected gesture and the determined distance.

2. The method of claim 1, wherein the step of detecting the gesture comprises:

detecting movement or shape of the input device;

comparing the detected movement or shape with a predetermined threshold value; and

determining a gesture has occurred if the detected movement or shape is equal to or exceeds the predetermined threshold value.

3. The method of claim 2, wherein the predetermined threshold value is at least one of:

a value of speed;

a velocity value;

a duration of time;

a measure of straightness;

a coordinate direction;

a description of a shape and acceleration value.

4. The method of claim 1, when the distance is determined using a range camera.

5. The method of claim 4, wherein the step of detecting a distance of the input device from a predetermined location comprises generating a depth image and processing the depth image in accordance with a depth recognition process.

6. The method of claim 1, wherein the input device comprises a mouse, a stylus or the user'"'"'s finger.

14. A computer program comprising computer program code means adapted to perform all the steps of any of claim 1 when said program is run on a computer.

15. A computer program as claimed in claim 14 embodied on a computer readable medium.

7. A system for processing a gesture performed by a user of a first input device, the system comprising:

detection means adapted to detect the gesture

distance determination means adapted to determine a distance of the input device from a predetermined location, the detected distance being for disambiguating the gesture; and

a processing unit adapted to determine a user command based on the detected gesture and the determined distance.

8. The system of claim 7, wherein the detection means comprises:

input device detection means adapted to detect movement or shape of the input device;

a comparison unit adapted to compare the detected movement or shape with a predetermined threshold value; and

a gesture determination unit adapted to determine a gesture has occurred if the detected movement or shape is equal to or exceeds the predetermined threshold value.

9. The system of claim 8, wherein the predetermined threshold value is at least one of:

a value of speed;

a velocity value;

a duration of time;

a measure of straightness;

a coordinate direction; and

acceleration value.

10. The system of claim 7, when distance determination means comprise a range camera.

11. The system of claim 10, wherein the range camera is adapted to generating a depth image and wherein the distance determination means are adapted to process the depth image in accordance with a depth recognition process so as to determine the distance of the input device from a predetermined location.

12. The system of claim 7, wherein the input device comprises a mouse, a stylus or the user'"'"'s finger.

13. The system of claim 7, wherein the gesture is a flick gesture.