X光机数字图像增强器的关键技术研究  

Key Technology Research of X-Ray Digital Image Intensifier

作　　者：饶谦[1] 田丰[1] 

机构地区：[1]上海大学影视艺术技术学院影视工程系,上海200072

出　　处：《电视技术》2012年第13期52-55,共4页Video Engineering

基　　金：上海市教育委员会科研创新项目(12YZ008)

摘　　要：X光机数字图像增强器是X射线成像系统中的重要一环,而目前常用的X光机数字图像增强器往往存在瑕疵点、信噪比过低等问题。针对噪声问题,提出了一种动态降噪算法,改善了运动环境下的降噪质量。同时,对存在瑕疵点的这一现象,提出了一种检测与校正的算法。最后在自行设计的X光机数字图像增强器样机上将以上两种算法成功实现。X-ray digital image intensifier is an important part of X-ray imaging system. However, defective pixels and low signal to noise ratio （SNR） exist in the X-ray digital image intensifiers. Firstly, a dynamic noise reduction algorithm to improve the quality of noise reduction in the moving environ- ment is proposed. Secondly, a detection and correction algorithm for defective pixels is presented. Finally, two algorithms are apphed successfully in the self-designed X-ray digital image intensifier prototype.

关 键 词：X光图像 动态降噪 瑕疵点 

分 类 号：TN949.13[电子电信—信号与信息处理]