A 3.6 μs Latency Asynchronous Frame-Free Event-Driven Dynamic-Vision-Sensor
A 3.6 μs Latency Asynchronous Frame-Free Event-Driven Dynamic-Vision-Sensor
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DOI：
10.1109/jssc.2011.2118490
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发表时间：
2011-06-01
影响因子：
5.4
通讯作者：
Linares-Barranco, Bernabe
中科院分区：
文献类型：
--
作者：
Antonio Lenero-Bardallo, Juan;Serrano-Gotarredona, Teresa;Linares-Barranco, Bernabe
本文介绍了一种128 × 128动态视觉传感器。每个像素检测局部照明的时间变化。可以检测到10%的最小照明时间对比度。一个紧凑的前置放大阶段已被引入，允许提高最小可检测的对比度比以前的设计，而在同一时间减少1/3的像素面积。该像素在小于3.6 μ s的时间内对照明变化作出响应。该传感器捕捉非常快速移动的物体，以每秒10 K的转速旋转的能力，已被实验验证。能够实现这一点的基于帧的传感器将需要至少每秒100 K帧。
This paper presents a 128 x 128 dynamic vision sensor. Each pixel detects temporal changes in the local illumination. A minimum illumination temporal contrast of 10% can be detected. A compact preamplification stage has been introduced that allows to improve the minimum detectable contrast over previous designs, while at the same time reducing the pixel area by 1/3. The pixel responds to illumination changes in less than 3.6 mu s. The ability of the sensor to capture very fast moving objects, rotating at 10 K revolutions per second, has been verified experimentally. A frame-based sensor capable to achieve this, would require at least 100 K frames per second.