Adaptive Scanning to Break the Framerate-Resolution Limit¶
The performance limit of point- and line-scan imaging modalities like optical coherence tomography (OCT) and beamsteering ultrasound is governed by a framerate-resolution product. At the limit, any increase in framerate requires a decrease in resolution. We propose an adaptive scanning algorithm to break this limit for appropriately sparse scenes that minimize unnecessary scanning of the static background. In our online implementation, we demonstrate speedups in excess of fives times in OCT imaging of scenes with multiple small moving targets and surgical instruments.
M. Draelos, C. Viehland, R. P. McNabb, A. N. Kuo, and J. A. Izatt. Adaptive point-scan imaging beyond the frame rate-resolution limit with scene-reactive scan trajectories. Optica, 9(11):1276–1288, Nov 2022. doi:10.1364/OPTICA.472562.
Videos¶
These videos show results from adaptive scanning of real-life imaging scenes.
References¶
Y. Tian, M. Draelos, R. P. McNabb, A.-H. Dhalla, A. N. Kuo, and and Joseph A. Izatt. Efficient 3D cell tracking using adaptive scanning OCT. In SPIE Photonics West. 2023. Accepted.
M. Draelos, C. Viehland, R. P. McNabb, A. N. Kuo, and J. A. Izatt. Adaptive point-scan imaging beyond the frame rate-resolution limit with scene-reactive scan trajectories. Optica, 9(11):1276–1288, Nov 2022. doi:10.1364/OPTICA.472562.
M. Draelos, C. Viehland, and J. A. Izatt. Adaptive scanning for >5x speedup in volumetric framerate with point-scan optical coherence tomography. In SPIE Photonics West – Digital Forum, number 11948-22. January 2022.