A 240 x 180 130 dB 3 μs Latency Global Shutter Spatiotemporal Vision Sensor
A 240 x 180 130 dB 3 μs Latency Global Shutter Spatiotemporal Vision Sensor
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DOI：
10.1109/jssc.2014.2342715
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发表时间：
2014-10-01
影响因子：
5.4
通讯作者：
Delbruck, Tobi
中科院分区：
文献类型：
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作者：
Brandli, Christian;Berner, Raphael;Delbruck, Tobi
基于事件的动态视觉传感器（DVS）异步报告日志强度变化。其高动态范围、亚毫秒延迟和稀疏输出使其在机器人和实时跟踪等应用中非常有用。然而，他们放弃了绝对强度信息，这是有用的对象识别和分类。本文提出了一种动态和主动像素视觉传感器（DAVIS），解决了这一不足，输出异步DVS事件和同步全局快门帧并发。像素内的有源像素传感器（APS）电路和DVS电路共享单个光电二极管。在0.18 μ m 6 M1 P CMOS图像传感器（CIS）技术中制造的18.5 μ m（2）像素的240 × 180传感器阵列的测量结果显示，DVS路径的动态范围为130 dB，对比度检测阈值为11%，最小延迟为3 μ s，对比度匹配为3.5%; APS读出的动态范围为51 dB，FPN为0.5%。
Event-based dynamic vision sensors (DVSs) asynchronously report log intensity changes. Their high dynamic range, sub-ms latency and sparse output make them useful in applications such as robotics and real-time tracking. However they discard absolute intensity information which is useful for object recognition and classification. This paper presents a dynamic and active pixel vision sensor (DAVIS) which addresses this deficiency by outputting asynchronous DVS events and synchronous global shutter frames concurrently. The active pixel sensor (APS) circuits and the DVS circuits within a pixel share a single photodiode. Measurements from a 240x180 sensor array of 18.5 mu m(2) pixels fabricated in a 0.18 mu m 6M1P CMOS image sensor (CIS) technology show a dynamic range of 130 dB with 11% contrast detection threshold, minimum 3 mu s latency, and 3.5% contrast matching for the DVS pathway; and a 51 dB dynamic range with 0.5% FPN for the APS readout.