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CMOS图像传感器的自适应降噪方法研究 被引量：8

Research of Adaptive Noise Reduction for CMOS Image Sensor
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摘要 提出了一种用于CMOS图像传感器的新型自适应降噪方法,并进行了逻辑电路实现。该方法通过运动检测和边缘检测技术进行噪声功率统计和分析,选择性的利用中值滤波、均值滤波以及运动自适应滤波方法,对传感器输出图像进行了数字降噪处理。实验表明本文方法降低了高斯噪声和椒盐噪声的影响,有效提高了图像质量和峰值信噪比。其结构易于电路实现,适用于CMOS图像传感器内部的实时降噪处理。 A novel adaptive noise reduction method for CMOS image sensor is proposed and implemented by digital logic circuit. Motion detection and edge detection is adopted for noise power statistic and noise analysis. To decrease the output digital image noise, the median filtering, average filtering and motion adaptive filtering, are selectively presented. Experiment results show that Gaussian noise and salt-pepper noise are reduced. The image quality and peak signal-noise ratio is impressively improved. This method is friendly for hardware implementation and real-time de-noising in CMOS image sensor.
作者 田里 姚素英 周津
机构地区 天津大学电子信息工程学院ASIC设计中心
出处 《传感技术学报》 CAS CSCD 北大核心 2008年第9期1561-1565,共5页 Chinese Journal of Sensors and Actuators
基金 国家自然科学基金资助项目(60576025)
关键词 CMOS图像传感器 自适应降噪 噪声功率统计 峰值信噪比 CMOS Image Sensor（CIS） adaptive noise reduction noise power statistic Peak Signal-Noise Ratio （PSNR）
分类号 TN403 [电子电信—微电子学与固体电子学]
  • 相关文献

参考文献10

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二级参考文献6

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共引文献2

同被引文献52

  • 1徐江涛,姚素英,李斌桥,史再峰,高静.Design,Analysis,and Optimization of a CMOS Active Pixel Sensor[J].Journal of Semiconductors,2006,27(9):1548-1551. 被引量：2
  • 2徐江涛,姚素英,李斌桥.Pixel and Column Fixed Pattern Noise Suppression Mechanism in CMOS Image Sensor[J].Transactions of Tianjin University,2006,12(6):442-445. 被引量：5
  • 3侯舒志,姚素英,周津,刘激扬,徐江涛,胡燕翔.CMOS图像传感器时序控制方法研究与实现[J].固体电子学研究与进展,2007,27(1):119-122. 被引量：5
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引证文献8

二级引证文献56

传感技术学报
2008年 第9期

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