三种频闪自动检测算法的实现及对比分析研究

作者：陈孟儒，张宇弘 日期：2008-12-26/span> 浏览：3737 查看PDF文档

三种频闪自动检测算法的实现及对比分析研究

陈孟儒，张宇弘
（浙江大学 超大规模集成电路设计研究所，浙江 杭州 310027）

摘要：为解决交流光源给手机、笔记本电脑等移动电子产品中的基于电子滚动快门的互补型金属氧化物半导体（CMOS）图像传感器带来的频闪问题，提出了频闪自动检测的改进方案及新方案。阐述了三种频闪自动检测的算法（分别是：频率分量提取方式，幅度调制解调方式，Harr小波方式）及其超大规模集成电路（VLSI）实现，并对三种方案在性能及实现代价上进行了比较。分析结果显示，Harr小波方式在性能及代价上相对其他两种方法较好。
关键词：频闪自动检测；电子滚动快门；互补型金属氧化物半导体；图像传感器；超大规模集成电路
中图分类号：TP331.1文献标识码：A文章编号：1001-4551(2008)11-0016-04

Implementation and comparison of three automatic flicker detect methods
CHEN Mengru, ZHANG Yuhong
(Institute of VLSI Design, Zhejiang University, Hangzhou 310027, China)
Abstract: Aiming at solving the flicker problem of complementory metal|oxide|semiconductor(CMOS)image sensor based on electronic rolling shutter which is widely used in mobile electronic systems such as cell phones and laptops caused by AC light, an improvement and new algorithms were proposed to detect flicker automatically. The three methods and their very large scale integration(VLSI)implementation were presented, including frequency distill method, amplitude modulation demodulate method and Harr wavelet method. The comparison shows that the third one is the best in both performance and cost.
Key words: automatic flicker detection; electronic rolling shutter; complementary metaloxidesemiconductor(CMOS); image sensor; very large scale integration(VLSI)
参考文献(References):
［1］POPLIN D. An automatic flicker detection method for embedded camera systems［J］. IEEE Trans. on Consumer Electronics,2006,52(2):308-311.
［2］WANY M, LSRAEL G P. CMOS image sensor with NMOSonly global shutter and enhanced responsivity［J］. IEEE Trans. on Electron Devices,2003,50(1):57-62.
［3］LAUXTERMANN S. A megapixel high speed CMOS imager with sustainable gigapixel/sec readout rate［C］//in Proc. 2001 IEEE Workshop on ChargeCoupled Devices and Advanced Image Sensors,2001:48-51.
［4］PECHT O Y. A random access photodiode array for intelligent image capture［C］//IEEE Trans. Electron Devices,1991,38:1772-1780.
［5］NODA M, KINUGASA T. Flickerless television camera［P］. U.S. Patent 4,774,588,1988.
［6］HURWITZ J. A miniature imaging module for mobile applications［C］//IEEE Intl Solid State Circuits Conf. Digest of Technical Papers,2001:90-91,436.
［7］LINANG C K, PENG Y C, CHEN H. Rolling shutter distortion correction［C］//Proc. of SPIE, Visual Communications and Image Processing,2005,5960:1315-1322.
［8］MEINGAST M, GEYER C, SASTRY S. Geometric models of rolling shutter cameras［EB/OL］.［2008-01-15］.http://arxiv.org/abs/cs.CV/0503076.