期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于WebGL的航道数据组织与三维可视化方法 被引量:6
1
作者 辛全波 秦柳 +1 位作者 范俊甫 毕金强 《测绘地理信息》 CSCD 2022年第1期81-85,共5页
针对Web端进行航道构建与三维可视化时遇到的海量数据组织困难、即时显示效率低的问题,提出了一种多维度数据索引构建方法,利用多层次网格索引将空间分布特征和时空关联关系索引到数据中,实现了海量水深数据的快速增量入库和高效检索;... 针对Web端进行航道构建与三维可视化时遇到的海量数据组织困难、即时显示效率低的问题,提出了一种多维度数据索引构建方法,利用多层次网格索引将空间分布特征和时空关联关系索引到数据中,实现了海量水深数据的快速增量入库和高效检索;提出了一种基于边界约束的航道地形模型构建方法,利用alpha-shape算法提取自适应边界,并对Delaunay三角网进行优化,实现了航道三维地形模型的快速构建;设计了基于Web图形库(Web graphics library,Web-GL)的航道三维地形模型显示流程,利用可编程渲染管线在图形处理器(graphics processing unit,GPU)上进行运算和渲染,实现航道三维即时可视化。实验结果表明,该方法可用于Web环境下的航道数据组织和三维可视化。 展开更多
关键词 航道数据组织 web图形库(web graphics library webGL) 三维可视化 DELAUNAY alpha-shape
原文传递
Application of 3D Printing and WebGL-Based 3D Visualisation Technology in Imaging Teaching of Ankle Joints 被引量:3
2
作者 LI Xiaomin DAI Xiaoqing +5 位作者 GUO Jiuhong QU Yang WU Bing LIU Siyu WAN Daqian AI Songtao 《Journal of Shanghai Jiaotong university(Science)》 EI 2021年第3期319-324,共6页
With the rapid development of medical technology,3D printing technology with realistic representation can perfectly display static human anatomy,while 3D visualisation technology based on Web Graphics Library(WebGL)ca... With the rapid development of medical technology,3D printing technology with realistic representation can perfectly display static human anatomy,while 3D visualisation technology based on Web Graphics Library(WebGL)can promote the rigid replication characteristics of traditional teaching models and express the dynamic spatial relationship between different anatomical structures.Medical students traditionally have less cognition of ankle ligament sprains.In this study,computed tomography(CT)and magnetic resonance imaging(MRI)data of the ankle joints of volunteers were used to print models of the ankle bone,tendon,and ligament using 3D printing technology,and a real-time interactive 3D digital model of the functional ankle joint was designed using 3D visualisation based on WebGL and 2D image real-time rendering technology for interactive teaching.The utility of the 3D printing model combined with the WebGL-based 3D digital teaching model was evaluated in comparison with traditional teaching methods in 24 medical students.The results showed that the total score of students in the experimental group(mean±SD,79.48±12.93)was significantly better than that of the control group(61.00±14.94)with P<0.05.The practical test scores of the experimental group(18.00±2.70)were significantly higher than those of the control group(13.67±4.96)with P<0.05.In the satisfaction survey,the feedback questionnaire showed that the interactive teaching model of 3D printing technology combined with WebGL-based 3D visualisation technology was recognised by students in terms of quality and overall satisfaction.In addition,female students who used 3D printing combined with WebGL-based 3D visualisation technology as learning aids had a greater difference in practical test scores from the control group than male students.This study has demonstrated that the interactive teaching mode of 3D printing combined with WebGL-based 3D visualisation technology is beneficial to the teaching of medical imaging,enriching the learning experience of students,and increasing the interaction between teachers and students. 展开更多
关键词 visualisation 3D printing web graphics library(webGL) medical imaging ankle ligaments medical education interactive teaching
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部