DICOM灰阶图像软拷贝快速标准化显示方法

提出一种基于图形处理器(GPU)的标准灰阶显示函数(GSDF)的实现方法,依照Barten模型,以DICOM标准中对于GSDF的相关定义为基础,通过三次样条插值获取表现值与数字驱动等级(DDL)值对应关系,实现由存储值直接得到符合DICOM标准的显示效果。算法基于图形硬件加速技术,使得GSPS操作的实时性得到提升。应用本方法可弥补多数显示设备不具备内置DICOM P14校正的不足,具有很好的应用价值。

A fast algorithm of grayscale standard softcopy display in DICOM

A new algorithm based on graphic processing unit (GPU) for the implement of grayscale standard display function (GSDF) in DICOM was proposed in this article. The algorithm was based on Barten model describing the eye contrast sensitivity, and used cubic spline interpolation to acquire the relation between P-Value and digital driving level (DDL). Displaying results according with DICOM could be obtained directly from Stored Value. Compared with conventional methods, using GPU acceleration could improve the timeliness of the grayscale softcopy presentation state operations. On the other hand, the algorithm made up for shortages of low-cost systems without built-in calibration.