精品文档---下载后可任意编辑CMOS 图像传感器列固定模式噪声的消除的开题报告摘要：随着数字相机和智能手机的普及，CMOS(Complementary Metal Oxide Semiconductor)图像传感器已经成为目前最常见的图像采集器件。相较于传统的 CCD(Coupled Charge Device)，CMOS 图像传感器具有功耗低、集成度高等优势。然而在实际应用中，图像采集时存在列固定模式噪声，这会影响图像的质量。本文主要探究 CMOS 图像传感器列固定模式噪声的消除方法，通过对在传感器片上进行校准，降低列固定模式噪声的影响，最终提高图像的质量。首先通过对 CMOS 图像传感器的工作原理和制造工艺进行分析，详细介绍列固定模式噪声的原因和特点。然后对传感器的校准方法进行探讨，分别介绍了基于固定图像和自动曝光的两种校准方法，并对比分析了它们的优缺点。最后通过实验验证，在固定图像和自动曝光两种校准方法的基础上，将列固定模式噪声降低到可接受的范围。本文提出的方法能够有效地消除 CMOS 图像传感器列固定模式噪声，实现更高质量的图像采集。关键词：CMOS 图像传感器；列固定模式噪声；校准方法；图像质量Abstract:With the popularity of digital cameras and smartphones, CMOS (Complementary Metal Oxide Semiconductor) image sensors have become the most common image acquisition devices. Compared with traditional CCD (Coupled Charge Device), CMOS image sensors have the advantages of low power consumption and high integration. However, in actual use, there is column fixed pattern noise in image acquisition, which affects the quality of the image.This article mainly explores the method of eliminating column fixed pattern noise in CMOS image sensors, by calibrating on the sensor chip to reduce the impact of column fixed pattern noise and ultimately improve the quality of the image.精品文档---下载后可任意编辑Firstly, by analyzing the working principle and manufacturing process of CMOS image sensors, this article describes in detail the causes and characteristics of column fixed pattern noise. Then the calibration method of the sensor is discussed, and two calibration methods based on fixed image and automatic exposure are introduced and analyzed their respective advantages and disadvantages. Finally, through experiments, column fixed pattern noise is reduced to an acceptable range based on the two calibration methods of fixed image and automatic exposure.The method proposed in this article can effectively eliminate column fixed pattern noise in CMOS image sensors and achieve higher quality image acquisition.Keywords: CMOS image sensor; column fixed pattern noise; calibration method; image quality.
