Turning a MacBook into a touchscreen with $1 of hardware (2018)
4 hours ago
- #Computer Vision
- #Touchscreen
- #DIY Tech
- A $1 hardware setup using a mirror and webcam turns a MacBook into a touchscreen.
- The system, called Project Sistine, detects fingers by identifying reflections via computer vision.
- Key steps involve skin color filtering, contour detection, and touch/hover point calculation.
- Calibration uses homography mapping to convert webcam coordinates to on-screen positions.
- It translates touch events into mouse actions, enabling touch interaction with existing apps.
- Potential improvements include higher-resolution webcams and curved mirrors for better coverage.
- The project is open source under the MIT license, with prototypes built in about 16 hours.