摘要
在X线透视成像安全检查过程中,经常遇到多种物体重叠在一起,很难判断物质的真实属性,这对危险品检测工作产生了很大影响。如何消除X线透射图像中的重叠效应,得到被覆盖物质的真实灰度以及属性信息一直是安检设备研发中的一个重要课题。目前的方法只能对灰度级较高,即穿透性很好的重叠区域有较好的效果。通过对重叠效应的深入分析和大量试验验证,对现有方法进行了改进。实验结果证明本方法不仅在灰度级较高的区域有较好的效果,在穿透性不强的区域也有较好的效果。
In security inspection, objects in a bag almost always overlap with other objects, It is difficult to judge the real property of the object of interest, and it has a strong impact on security inspection. Being able to identify the object of interest and remove the overlap effects becomes the key issue that needs to be solved. Present methods can only achieve satisfactory result at regions of high gray level where penetrability is good. Through a deep study of the object-overlapping effects and plenty of experiments, we made an improvement of the present method. The result of the experiments proved that our method is effective both at bright and dark regions.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2007年第1期130-133,125,共5页
Nuclear Electronics & Detection Technology
关键词
安检
X线透射图像处理
重叠效应
security inspection
image processing of X-ray transmission
overlapping effects
