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 ohtained 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 .%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.
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