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.
出处
《电视技术》
北大核心
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)
关键词
X光图像
动态降噪
瑕疵点
X-ray image
dynamic noise reduction
defective pixels
