MATLAB: How to detect the victory sign in real time

Computer Vision Toolboxgestureimage processingobject detection and recongnition

I want to detect victory sign in real time video so that I can perform some processes on the image. What will be the steps? How can I start it? Any Help?

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Those kind of capabilities, at least for lower level functions, are in the Computer Vision System Toolbox http://www.mathworks.com/products/computer-vision/features.html#object-detection-and-recognition It may not exactly have a "hand holding up victory sign" function but you could probably build one using skin color segmentation and SURF.

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MATLAB: What are the difficulties faced during continuous hand gesture recognition process.

Those would be discussed in the papers on the subject. They are listed here: http://iris.usc.edu/Vision-Notes/bibliography/contentspeople.html#Face%20Recognition,%20Detection,%20Tracking,%20Gesture%20Recognition,%20Fingerprints,%20Biometrics in this section:

21.4 Gesture and Pose Analysis

I imagine they talk about things like shadows, background clutter, speed of gesture changing, snapping "in between" unwanted gestures, bad camera angle, unrecognized gestures, etc.

MATLAB: Human hand detection using Human Hand Shape based using Normal RGB Camera its possible

Generally speaking, Yes. This is usually done for "gesture recognition".

There can be challenges to get it to work well at different scales (in 3d) in cluttered environments with different skin tones and other objects in view that might match skin tone by accident. If you add in mitts or gloves it can also get more difficult.

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MATLAB: What are the difficulties faced during continuous hand gesture recognition process.

MATLAB: Human hand detection using Human Hand Shape based using Normal RGB Camera its possible

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