Journal ArticleDOI
A Bio-Inspired Vision Sensor With Dual Operation and Readout Modes
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TLDR
A new approach to compute the spatial contrast based on inter-pixel event communication less prone to mismatch effects than diffusive networks is proposed.Abstract:
This paper presents a novel event-based vision sensor with two operation modes: 1) intensity mode and spatial contrast detection. They can be combined with two different readout approaches: 1) pulse density modulation and time-to-first spike. The sensor is conceived to be a node of an smart camera network made up of several independent an autonomous nodes that send information to a central one. The user can toggle the operation and the readout modes with two control bits. The sensor has low latency (below 1 ms under average illumination conditions), low power consumption (19 mA), and reduced data flow, when detecting spatial contrast. A new approach to compute the spatial contrast based on inter-pixel event communication less prone to mismatch effects than diffusive networks is proposed. The sensor was fabricated in the standard AMS4M2P 0.35- $\mu \text{m}$ process. A detailed system-level description and experimental results are provided.read more
Citations
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Bio-inspired color-polarization imager for real-time in situ imaging
TL;DR: In this article, a single-chip, low-power, high-resolution color-polarization imaging system based on the visual system of the mantis shrimp has been developed.
Journal ArticleDOI
An Event-Driven Ultra-Low-Power Smart Visual Sensor
TL;DR: An ultra-low-power smart visual sensor architecture featuring internal analog preprocessing is coupled with an energy-efficient quad-core cluster processor that exploits near-threshold computing within a few milliwatt power envelope and the capability of the smart camera on a moving object detection framework is demonstrated.
Journal ArticleDOI
Processing Near Sensor Architecture in Mixed-Signal Domain With CMOS Image Sensor of Convolutional-Kernel-Readout Method
Zhe Chen,Xin-Jun Liu,Huazhong Yang,Huifeng Zhu,Erxiang Ren,Zheyu Liu,Kaige Jia,Li Luo,Xuan Zhang,Qi Wei,Fei Qiao +10 more
TL;DR: A processing near sensor architecture in mixed-signal domain with CMOS Image Sensor (CIS) of convolutional-kernel-readout method is proposed, which provides a promising alternative for low-power vision-based IoT intelligent applications.
Journal ArticleDOI
A Sub-mW IoT-Endnode for Always-On Visual Monitoring and Smart Triggering
TL;DR: A fully programmable Internet of Things visual sensing node that targets sub-mW power consumption in always-on monitoring scenarios and achieves lower power consumption compared to MCU-based cameras with significantly lower on-board computing capabilities is presented.
Journal ArticleDOI
A Wide Linear Dynamic Range Image Sensor Based on Asynchronous Self-Reset and Tagging of Saturation Events
TL;DR: A high dynamic range (HDR) image sensor with a linear response that overcomes some of the limitations of sensors with pixels with self-reset operation that operates similar to an active pixel sensor, but its pixels have a novel asynchronous event-based overflow detection mechanism.
References
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A 240 × 180 130 dB 3 µs Latency Global Shutter Spatiotemporal Vision Sensor
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