High-speed 3D sensing via hybrid-mode imaging and guided upsampling

Istvan Gyongy, Sam Hutchings, Abderrahim Halimi, Max Tyler, Feng Zhu, Susan Chan, Stephen McLaughlin, Robert K. Henderson, Jonathan Leach

Research output: Contribution to journalArticlepeer-review

Abstract

Imaging systems with temporal resolution play a vital role in a diverse range of scientific, industrial, and consumer applications, e.g. fluorescent lifetime imaging in microscopy and timeof- flight (ToF) depth sensing in autonomous vehicles. In recent years, single-photon avalanche diode (SPAD) arrays with picosecond timing capabilities have emerged as a key technology driving these systems forward. Here we report a high-speed 3D imaging system enabled by a state-of-the-art SPAD sensor used in a hybrid imaging mode that can perform multi-event histogramming. The hybrid imaging modality alternates between photon counting and timing frames at rates exceeding 1000 frames per second, enabling guided upscaling of depth data from a native resolution of 64 32 to 256 128. The combination of hardware and processing allows us to demonstrate high-speed time-of-flight 3D imaging in outdoor conditions and with low latency. The results indicate potential in a range of applications where real-time, high throughput data is necessary. One such example is improving the accuracy and speed of situational awareness in autonomous systems and robotics.
Original languageEnglish
Pages (from-to)1253-1259
Number of pages7
JournalOptica
Volume7
Issue number10
Early online date21 Sep 2020
DOIs
Publication statusPublished - 20 Oct 2020

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