Histogram-equalization-based adaptive image sensor for real-time vision

被引：23

作者：

Ni, Y ^{[1
]}

Devos, F ^{[1
]}

Boujrad, M ^{[1
]}

Guan, JH ^{[1
]}

机构：

[1] UNIV PARIS 11,INST ELECT FONDAMENTALE,F-91405 ORSAY,FRANCE

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1997年 / 32卷 / 07期

关键词：

histogram equalization; image sensors; machine vision; VLSI;

D O I：

10.1109/4.597293

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：

Image sensing and coding are essential to vision machines. This paper presents an adaptive image sensor by using iii situ histogram equalization. With this histogram-equalization-based adaptation, this image sensor can adapt automatically to different lighting conditions without frame delay and provides a constant image signal excursion range. A CMOS prototype chip of 64 x 64-pixel is presented where each pixel contains ten transistors and occupies 50 x 50 mu m(2) in a classic 1-mu m double-metal single-poly process. The experimental results confirm an adaptation over illumination variation of 1:5000.

引用

页码：1027 / 1036

页数：10

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