Virtual Air Canvas 🎨

A real-time virtual drawing application built with OpenCV and MediaPipe. This project detects hand gestures to allow users to draw, erase, and pause on a virtual canvas directly through the webcam.

🖼️ Demo

🚀 Features

• Live Drawing: Draw on the canvas by moving your index finger.
• Gesture Control: Use simple hand gestures to control the drawing process.
• Erase Canvas: Clear the entire canvas with a specific hand pose.
• Pause Drawing: Stop drawing without losing your progress.
• Smart Line Breaks: The application intelligently handles the start and end of drawing strokes.

🎮 Controls & Gestures

The application recognizes the following hand gestures:

Gesture	Action
Index Finger Up Only	🟢 Draw
All Fingers Up	🔴 Erase Canvas
Pinky Finger Up	🟠 Pause
Fist (All Bent)	⚫ Wait/No Action

📦 Installation

To get this project up and running, follow these steps:

1. Clone the repository:

   git clone https://github.com/MjavadH/virtual-air-canvas.git
   cd virtual-air-canvas

2. Install the required dependencies:

   pip install -r requirements.txt

▶️ How to Use

Once the installation is complete, run the main script:

python src/main.py

Hold your hand in front of the webcam and use the defined gestures to start drawing. Press the q key to exit the application.

🧠 How it Works

This project uses MediaPipe Hands to track 21 hand landmarks. The drawing logic is based on geometric checks:

• Drawing Mode: Activated when only the Index finger is up (tip y < pip y).
• Smooth Lines: A deque data structure stores the coordinates to draw continuous lines and handle breaks efficiently.

📜 Requirements

• OpenCV
• NumPy
• MediaPipe

📄 License

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