Synchronizing multiple cameras is crucial for applications like 3D reconstruction, stereo vision, and panoramic video stitching. In this project, we explore how to achieve frame synchronization with sub-millisecond precision using Raspberry Pi and external triggers.
Key challenges addressed:
- Hardware trigger signal generation
- Kernel latency optimization
- Network Time Protocol (NTP) vs Precision Time Protocol (PTP)
By carefully tuning the system, we achieved a synchronization delay as low as 100µs between frames captured by different cameras.