High-speed 3D sensing via hybrid-mode imaging and guided upsampling
High-speed 3D sensing via hybrid-mode imaging and guided upsampling
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DOI：
10.1364/optica.390099
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发表时间：
2020-10-20
期刊：
影响因子：
10.4
通讯作者：
Leach, Jonathan
中科院分区：
文献类型：
--
作者：
Gyongy, Istvan;Hutchings, Sam W.;Leach, Jonathan
具有时间分辨率的成像系统在各种科学、工业和消费应用中发挥着至关重要的作用，例如显微镜中的荧光寿命成像和自动驾驶汽车中的飞行时间（ToF）深度传感。近年来，具有皮秒定时能力的单光子雪崩二极管（SPAD）阵列已成为推动这些系统向前发展的关键技术。在这里，我们报告了一种高速3D成像系统，该系统由最先进的SPAD传感器支持，用于混合成像模式，可以执行多事件直方图。混合成像模式在光子计数和定时帧之间交替，速率超过每秒1000帧，使深度数据从64 x 32的原生分辨率提升到256 x 128。硬件和处理的结合使我们能够在室外条件下以低延迟展示高速ToF 3D成像。结果表明，在需要实时、高吞吐量数据的一系列应用中，该技术具有很大的潜力。其中一个例子是提高自主系统和机器人的态势感知的准确性和速度。(C) 2020年美国光学学会根据OSA开放获取出版协议的条款
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 time-of-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 performmulti-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 x 32 to 256 x 128. The combination of hardware and processing allows us to demonstrate high-speed ToF 3D imaging in outdoor conditions and with low latency. The results indicate potential in a range of applications where real-time, high throughput data are necessary. One such example is improving the accuracy and speed of situational awareness in autonomous systems and robotics. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement