X射线成像影响因素及图像处理技术研究-微电子学与固体电子学专业论文.docxVIP

I I 摘 要 X 射线成像检测是工业无损检测中最主要的检测手段之一，在工业无损检测 领域中应用范围极广。市场上用于工业无损检测的 X 射线成像检测设备被国外厂 家所垄断，设备价格昂贵；而国内的设备检测的分辨率不高，因此亟需研制一套 低成本高分辨率的 X 射线成像检测系统。 为满足设计的要求，本文使用国产的 X 射线像增强器作为系统的成像器件来 降低设备的成本；同时对 X 射线成像检测系统中影响 X 射线图像质量的因素进行 了详细的研究，在此基础上选择合适的器件完成系统的搭建工作。还对 X 射线数 字图像的降噪方法和 X 射线数字图像处理技术进行了研究，选择并使用改进的帧 叠加方法对 X 射线数字图像的噪声进行处理，最后设计并实现了 X 射线成像检测 系统软件。 通过实验表明，使用本文设计的成像检测系统和图像处理方法研制的 X 射线 成像检测设备很好的达到了设计的要求。 关键词：X 射线成像 图像质量 图像降噪 图像增强 II II ABSTRACT X-ray radiography detection is one of the main detection methods of industrial nondestructive testing, and has a wide range of application in this field. However, the x-ray radiography detection equipment using for industrial nondestructive testing was monopolized by foreign manufacturers in the market. The cost of this equipment is expensive and the detection resolution of domestic equipment is not high, so it is urgently need to develop a set of x-ray radiography detection system with low cost and high resolution. To meet the requirements of design, this paper uses the domestic x-ray image intensifier as a imaging device of system to reduce the equipment cost; At the same time, the factors influencing x-ray imaging in x-ray radiography detection system have been carried on the detailed research, on this basis, selecting the appropriated device to complete the work of system building, Moreover, x-ray image noise reduction method and image processing techniques was also studied, selecting and using the improved frame superposition method to deal with the noise of the x-ray image, it finally designs and implements a software of x-ray radiography detection system. Experiments show that the x-ray imaging detection equipment developed by imaging detection system and image processing method designed in this paper meets the design requirements. Key words: X-ray Radiography Image Quality Image Denoise Image Enhancement PAGE PAGE IV 目 录 HYPERLINK \l _bookmark0 摘 要 I HYPERLINK \l _bookmark1 ABSTRACT II HYPERLINK \l _bookmark2 目 录III HYPERL