Biomimetic frame-free HDR camera with event-driven PWM image/video sensor and full-custom address-event processor

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI:10.1109/BIOCAS.2010.5709619

C. Posch, D. Matolin, R. Wohlgenannt, M. Hofstatter, P. Schon, M. Litzenberger, Daniel Bauer, H. Garn

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引用次数: 6

Abstract

This paper presents a high DR, high temporal resolution, frame-free image/video camera that encodes and processes visual information in asynchronous spikes. The event-driven optical sensor features 9.3-bit grayscale imaging at up to 143dB DR and <0.25% FPN with hardware-based lossless video compression and time-domain correlated double sampling. The main components of the camera — the asynchronous, time-based image sensor (ATIS) and a general purpose Address-Event processor (GAEP) with 20-Bit 10ns-resolution sensor data interface — have been specifically designed with the goal to implementing a biomimetic, asynchronous, frame-free approach to vision. The presented system optimally combines the advantages of time-based (PWM) imaging, bio-inspired temporal contrast dynamic vision and event-based (AER) information encoding and data communication, and achieves exceptional performance in terms of dynamic range, FPN, temporal resolution, gray-level resolution and data compression.

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具有事件驱动的PWM图像/视频传感器和全定制地址事件处理器的仿生无帧HDR相机

本文提出了一种高DR、高时间分辨率、无帧图像/视频摄像机，它可以在异步尖峰中编码和处理视觉信息。事件驱动的光学传感器具有高达143dB DR的9.3位灰度成像和<0.25%的FPN，具有基于硬件的无损视频压缩和时域相关双采样。相机的主要组件——异步、基于时间的图像传感器(ATIS)和一个通用的地址事件处理器(GAEP)，具有20位10ns分辨率的传感器数据接口——经过专门设计，目标是实现仿生、异步、无帧的视觉方法。该系统将基于时间的(PWM)成像、生物时域对比动态视觉和基于事件的(AER)信息编码和数据通信的优点完美地结合在一起，在动态范围、FPN、时间分辨率、灰度分辨率和数据压缩方面取得了优异的性能。

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2010 Biomedical Circuits and Systems Conference (BioCAS)

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