A 0.5 V, 14.28-kframes/s, 96.7-dB Smart Image Sensor With Array-Level Image Signal Processing for IoT Applications
A 0.5 V, 14.28-kframes/s, 96.7-dB Smart Image Sensor With Array-Level Image Signal Processing for IoT Applications
复制标题
具有适用于物联网应用的阵列级图像信号处理功能的 0.5V、14.28kframes/s、96.7dB 智能图像传感器
DOI：
10.1109/ted.2016.2521168
复制
发表时间：
2016
影响因子：
3.1
通讯作者：
C. Hsieh
中科院分区：
文献类型：
--
作者：
Chin Yin;Chin;C. Hsieh
本文提出了一种具有多种工作模式的智能图像传感器，包括边缘提取、多点跟踪（MPT）和高动态范围（HDR）成像，适用于物联网应用中的无线传感器节点。该像素由一个0.5 V操作的脉宽调制传感器组成，用于实现HDR响应和低固定模式噪声。阵列级图像信号处理使用局部像素间反馈网络、像素内低功耗动态逻辑以及具有事件驱动的握手读出的相应外设来实现。采用台积电0.18 μm CIS工艺设计并制作了64 × 64 CMOS图像传感器（CIS）阵列的原型芯片。在MPT模式下，测量到的跟踪速度为14.28 kframes/s，误差为0.36像素，跟踪能力可达4点。在HDR成像模式下，实现的DR为96.7 dB。
This paper presents a smart image sensor with multiple operation modes, including edge extraction, multipoint tracking (MPT), and high-dynamic-range (HDR) imaging for wireless sensor nodes in Internet-of-Things applications. The pixel consists of a 0.5 V operated pulsewidth-modulation sensor for achieving HDR response and low fixed pattern noise. Array-level image signal processing is implemented using a local interpixel feedback network, in-pixel low power dynamic logics, and a corresponding peripheral with an event-driven hand-shaking readout. A prototype chip with a 64 × 64 CMOS image sensor (CIS) array is designed and fabricated in a TSMC 0.18-μm CIS technology. In the MPT mode, the measured tracking speed is 14.28 kframes/s with an error of 0.36 pixels and a tracking capability up to four points. In the HDR imaging mode, the achieved DR is 96.7 dB.