Computer-Vision Guitar Tutor
Hack The Valley X
October 2025
Contributors: Sameer Bandha, Prisca Chien
Chordially
Launch ProjectDevpost
View Project on DevpostGitHub
View Project RepositoryAs part of a 36-hour hackathon, we built Chordially, a computer vision–based tool that makes learning guitar chords simple, visual, and interactive.
How it Works
Fretboard Detection: Printed ArUcos placed around the fretboard of a guitar allow OpenCV to map the fretboard virtually.
Hand Tracking: MediaPipe (a framework by Google for building real-time perception pipelines using computer vision and machine learning) detects and tracks the user’s hands.
Finger Placement: Virtual fretboard overlays highlight the correct strings and frets for each chord, guiding users’ fingers into position and making chord learning more intuitive and visual.
Chord Matching: A database that links finger positions to chords allows the system to compare the user’s finger placement on the fretboard and generate an accuracy score.