An Integrating Wide Dynamic-Range Image Sensor With a Logarithmic Response

被引：27
作者：
Cheng, Hsiu-Yu [1 ]
Choubey, Bhaskar [1 ]
Collins, Steve [1 ]
机构：
[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2009年 / 56卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
CMOS image sensor; fixed pattern noise; temporal noise; wide dynamic range; CMOS; READOUT;
D O I：
10.1109/TED.2009.2030614
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An integrating CMOS image sensor with a wide dynamic range is described. The dynamic range of these pixels is controlled by a user-defined reference voltage that creates a photocurrent-dependent effective integration time. The operation of these pixels and a method of obtaining a well-controlled logarithmic response are both described. Furthermore, described are the results of two alternative methods of correcting the fixed pattern noise in these pixels and measurements of the temporal noise from individual pixels. These results show that with these pixels, it is possible to match the contrast sensitivity of the human visual system.
引用
收藏
页码：2423 / 2428
页数：6
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