CT图像三维重建体绘制算法重采样改进  

An Improved Resampling Method for Volume Rendering Algorithm in CT Image 3D Reconstruction

作　　者：甘妙格 刘璐瑶 GAN Miaoge;LIU Luyao(College of Electronic Information Engineering,Shandong University of Science&Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学电子信息工程学院,山东青岛266590

出　　处：《计算机与网络》2021年第8期63-66,共4页Computer & Network

摘　　要：CT断层影像三维重建技术是目前医学可视化研究的热点之一,为了更精准地获取病变部位的信息并使诊断过程更加方便,从一组CT切片图像中重建出三维图像就显得尤为重要。针对三维重建过程中体绘制的光线投射算法成像速度慢的问题,提出了将重采样过程中的三线性插值过程转化到二维数据场再进行插值的改进方法,在相对三线性插值法图像质量基本不变的情况下,成像时间节省约75%。The three-dimensional(3D)reconstruction technology of CT tomographic images is one of the hotspots of medical visualization research.In order to obtain more accurate information of lesions and make the diagnosis process more convenient,it is particularly important to reconstruct three-dimensional images from a set of CT slice images.Aiming at the slow imaging speed of the volume rendering ray casting algorithm in the 3 D reconstruction process,an improved method of transforming the trilinear interpolation process in the resampling process into a two-dimensional data field and then interpolating is proposed.When the quality is basically unchanged,the imaging time can be saved by about 75%.

关 键 词：三维重建 体绘制 光线投射算法 线性插值 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]