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By:-

Abhay Kumar Goswami Abhishek Aggrawal

Abhishek Rawat

PresentationOn

Gesture Recognition

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GESTURE RECOGNITION

Gestures are

expressive,meaningful body

motions, i.e., physical

movements of the

fingers, hands, arms,

head, face, or bodywith the intent to

convey information or

interact with the

environment.

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Body movements

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Anger Fear Disgust Happy Sad Surprise

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Facial Expressions

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Hand movements

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Gesture Recognition

WHY?

Provides HUMAN-MACHINE INTERFACE

Public acceptanceData required is easily obtained and

available

For National Security like ID, passwordsetc.

Gestures can be used to:

- Open/close application

- Change workspaces

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Issues

Numberofcameras. How many cameras are used?If more than one, are they combined early (stereo) or

late (multi-view)? Speedandlatency. Is the system real-time (i.e., fast

enough, with low enough latency interaction)?

Structuredenvironment.Are there restrictions onthe background, the lighting, the speed of

movement, etc.? Userrequirements. Must the user wear anythingspecial (e.g., markers, gloves, long sleeves)?

Anything disallowed (e.g., glasses, beard, rings)?

Primaryfeatures.What low-level features arecomputed (edges, regions, silhouettes, moments,histograms, etc.)?

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Howitworks

Sensors placed on your body lets say

fore-arm and arm relay rotationalinformation to a base-station sensor

The position of your hand in free space

is calculated from this data

The cursor is sent a command relative

to the movements of your hand

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Applications

Game technology

Sign language recognition Directional indication through pointing

Control through facial gestures

For socially assistive robotics

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Advantages

For low security identification no co-operation

is needed as the camera can be placed like aCCTV camera.

Need not to carry any special equipments.

Find many applications for immersing

technologies like remote controlling, robotics,gaming etc.

Helpful for physically challenged people.

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Disadvantages

The cost of extremely accurate gesture

recognition systems is high especially ifcombining different types of cameras. This costcan be prohibitive.

When using the technology for high securityverification the techniques are extremelysusceptible to light and camera distancechanges and controlled rooms are needed.

May not be always accurate

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Queries?

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Thankyou!!!

1.faceppt2

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