rk-screenshot

Screenshot Capture Using Hand Gestures

This project enables users to take screenshots using hand gestures detected via a webcam. It leverages the MediaPipe library for hand detection and OpenCV for video processing. The logic uses the transition of hand gestures (from an open palm to a fist) to trigger a screenshot.

Features

• Real-time hand gesture recognition.
• Screenshot capture when an open palm transitions to a fist gesture.
• Configurable and extensible for other gesture-based controls.

Requirements

To run this project, you need the following dependencies:

• Python 3.7+
• OpenCV (cv2)
• MediaPipe (mediapipe)
• A library or function for taking screenshots, such as ss_taker. Replace take_screenshot in the code with your screenshot functionality.

Installation

1. Clone the repository or download the source code.
2. Install the required Python packages:

   pip install opencv-python mediapipe
   

3. Ensure your Python environment includes the ss_taker library or a custom implementation for taking screenshots.

Usage

1. Save the script to a file, e.g., gesture_screenshot.py.
2. Run the script:

   python gesture_screenshot.py
   

3. The webcam will activate, and the program will begin detecting hand gestures.
4. Show an open palm to the camera, then transition to a fist gesture to capture a screenshot.
5. Press q to quit the program.

Usage Example

from project_Screenshot.r_screenshot import take_screenshot , capture_screenshot

# to take normal screenshot
take_screenshot()

# for Gesture recognizer screenshot
capture_screenshot()

How It Works

Gesture Detection

The script uses the MediaPipe library to detect hand landmarks and determine whether the hand is open or closed:

• Open palm: All fingers extended (based on landmark positions).
• Fist: All fingers closed.

Screenshot Trigger

When the script detects a transition from an open palm to a fist, it calls the take_screenshot() function to capture the current screen.

Core Functions

is_palm_open(landmarks)

Determines whether the hand is open by comparing the positions of finger landmarks.

capture_screenshot()

Main function that:

• Captures video from the webcam.
• Processes each frame for hand landmarks.
• Detects gesture transitions and triggers screenshot capture.

Customization

You can modify the script to:

• Recognize additional gestures.
• Perform other actions (e.g., send alerts or control devices) based on gestures.

Limitations

• Requires a clear view of the hand for accurate detection.
• Designed for a single hand; might need enhancements for multi-hand detection.

Acknowledgments

• OpenCV for image processing.
• MediaPipe for hand landmark detection.

To View Full Code

• Github to view full source code

Contributing

Contributions are welcome! If you have ideas for improvements or additional features, feel free to submit a pull request or open an issue.

License

This project is licensed under the MIT License. See the LICENSE file for details.