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About this paper
Dhawal Sirikonda, Praneeth Chakravarthula, Ioannis Gkioulekas, Adithya Pediredla
This work introduces a structured light system combining a custom acousto-optic device with an event camera, achieving full-frame 3D scanning at 1000 frames per second and effective adaptive scanning at 10 kfps. The system demonstrates a 3-4x speed increase over previous methods, enabling capture of rapidly moving objects and shifting the speed bottleneck from illumination hardware to the imaging sensor.
Key insights
- Modulating laser pulses synchronized with a constant-frequency ultrasound wave allows for precise control of light plane position and sweep speed in an AO device, leading to a significant cost reduction compared to previous phase modulation methods.
- The AO light source successfully shifts the primary speed bottleneck for high-speed 3D scanning from the illumination hardware to the event camera's readout bandwidth.
- Adaptive scanning, by targeting only regions of interest without illuminating intermediate areas, enables effective 3D data acquisition speeds an order of magnitude higher than the event camera's full-frame rate.
Summary by alphaXiv.
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