机构地区: 上海交通大学电子信息与电气工程学院图像处理与模式识别研究所
出 处: 《微型电脑应用》 2008年第3期35-38,5-6,共4页
摘 要: 本文对采用Freehand超声采集方法得到体数据进行三维重建与可视化问题进行了研究。由于传统基于CPU的方法在数据预处理与三维成像的过程中要耗费大量时间,本文应用可编程图形硬件(GPU)技术,实现快速的纹理查找与计算,并进行图像滤波与插值运算。由于可编程图形硬件将很多算法用硬件并行计算,可以明显缩短成像时间。最后比较了两种滤波方法和一种插值算法来提高三维图像的质量,实验证明,基于GPU的同中心插值法能减少噪声信号干扰,缩短绘制时间。 This paper studies the visualization and reconstruction of the 3D freehand ultrasound data.To speed the computation- al time,the Graphics Processing Unit (GPU) is used to take the place of traditional CPU based method in this project.For im- age filtering and interpolating,GPU can make use of hardware to realize a lot of arithmetic at the same time,so it can reduce the visualization time markedly.At last,the paper compared two kinds of filter methods and one kind of interpolationmethod, which can improve the quality of the 3D image.Experiments proved that the interpolation method which was based on GPU could reduce the noise signal and shorten rendering time.
领 域: [自动化与计算机技术] [自动化与计算机技术]