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High-speed 3D sensing via hybrid-mode imaging and guided upsampling
Optica ( IF 10.4 ) Pub Date : 2020-09-21 , DOI: 10.1364/optica.390099
Istvan Gyongy , Sam W. Hutchings , Abderrahim Halimi , Max Tyler , Susan Chan , Feng Zhu , Stephen McLaughlin , Robert K. Henderson , Jonathan Leach

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 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 $64 \times 32$ to $256 \times 128$. 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.

中文翻译:

通过混合模式成像和引导式上采样进行高速3D感测

具有时间分辨率的成像系统在各种科学,工业和消费者应用中都起着至关重要的作用,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)深度感应。近年来,具有皮秒计时功能的单光子雪崩二极管(SPAD)阵列已成为推动这些系统前进的关键技术。在这里,我们报告了一个高速3D成像系统,该系统由最新的SPAD传感器启用,该传感器在混合成像模式下使用,可以执行多事件直方图。混合成像模式以每秒超过1000帧的速率在光子计数和定时帧之间交替,从而实现深度数据的指导性升级,从原始分辨率的64美元乘以32美元256美元乘以128美元。硬件和处理的结合使我们能够在室外条件下以低延迟演示高速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具有潜力。一个这样的例子就是提高自主系统和机器人技术中态势感知的准确性和速度。
更新日期:2020-11-15
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