Smart Sketch A Virtual Drawing System using Hand Gestures with OpenCV and Mediapipe

In the age of contactless human-computer interaction, Smart Sketch introduces a real-time, gesture-controlled virtual drawing application that enables users to draw, select colors, erase, and change backgrounds using only hand gestures. Built using OpenCV and Mediapipe, the system captures hand landmarks via a webcam and processes them to perform intuitive drawing actions. The application features a user-friendly GUI-based login system developed with Tkinter to ensure secure access. Drawing is controlled through the relative distance between the thumb and index finger, enabling pinch-based activation and deactivation. Color and tool selection are managed by positioning fingers within pre-defined screen zones. Additionally, swipe gestures allow background switching, enriching the user experience. The system overlays drawings on customizable backgrounds in real-time and is optimized for performance across common hardware setups. Smart Sketch demonstrates how existing computer vision technologies can be adapted to create an engaging, touchless sketching interface for educational, creative, and accessibility-focused environments.