🎨 AI Virtual Painter

Draw in the air using real-time hand tracking.

💡 What It Is

A computer-vision drawing app that turns hand gestures into controls for drawing, selecting colors, resizing the brush, and erasing. I built it to explore how raw hand landmarks can become a smooth interactive experience.

🛠️ Tech Stack

• Python
• OpenCV — webcam capture and rendering
• MediaPipe Tasks API — hand landmark detection
• NumPy — geometry and numerical operations

⚙️ How It Works

Webcam
  ↓
MediaPipe Hand Landmarks
  ↓
Gesture Geometry
  ↓
Draw / Select / Resize / Erase
  ↓
EMA Smoothing + Canvas

It supports up to two hands, with independent interaction state and gesture-based brush controls.

🚀 Run Locally

git clone https://github.com/moizaiqbal40-ops/ai_virtual_painter.git
cd ai_virtual_painter
pip install -r requirements.txt

Place the required hand_landmarker.task model file in the project root, then run:

python ai_virtual_painter.py

✨ What I Learned / Challenges

The tricky part was turning noisy real-time landmark coordinates into gestures that feel responsive, so I added smoothing and explicit interaction states instead of drawing directly from raw points.