DR图像采集中的信号控制与图像规整算法

Signal Control and Image Tidying in DR Image Acquisition

研究了基于Matrox图像采集卡的DR图像采集中的信号控制问题;设计了平板状态控制和数据处理流程;提出了原始图像的隔行扫描及其区域交换算法;解决了如何将原始图像调整为规整的X线图像的问题,并在此基础上设计了DR图像的采集、显示和存储程序,分别对水模和人体部位进行了X线摄影实验。结果表明,本文提出的方法准确可靠,解决了DR图像采集过程中的信号控制和图像处理的问题,获取的X线数字图像真实有效,已经被应用于实际的DR系统。

The signal control strategy in a Matrox Meteor Ⅱ /Camera link card-based DR （Direct digital radiography） image acquisition system is studied. The processing flow for status control and data process of the flat panel is studied. A line interval scan and a area exchange algorithm are presented to process the original image data acquired from the detector array. The problem on the adjustment of the abnormal original image is solved and a program is developed for DR image acquisition, display and storage. Experimental results on water models and human bodies show that the method are correct and digital X ray images are valid. The method is applied in the clinical practices of the direct digital radiography system.