机构知识库三维模型检索与展示技术研究与实践  

Retrieving 3D Models from Institutional Repository

作　　者：吴志强[1] 祝忠明[1] 刘巍[1] 张旺强[1] 姚晓娜[1] 

机构地区：[1]中国科学院兰州文献情报中心,兰州730030

出　　处：《数据分析与知识发现》2017年第1期73-80,共8页Data Analysis and Knowledge Discovery

基　　金：中国科学院2015年西部青年学者B类项目"科研过程中非文本资源的语义化组织技术研究"(项目编号:Y6AX031001)的研究成果之一

摘　　要：【目的】根据机构知识库功能的扩展需求,研究三维模型检索和展示技术,设计并实现基于内容的三维模型检索以及Web3D展示与交互功能。【方法】在台湾大学开源的三维模型检索算法的基础上,改用离屏渲染的方法获取模型的正交投影,提取三维模型特征,采用Java3D生成三维模型缩略图,使用Three.js实现三维模型Web在线展示与交互。【结果】用户可通过提交三维模型URL或上传的方式,检索三维模型,在三维模型浏览页面可通过鼠标对模型进行旋转、缩放操作以详细查看。【局限】模型检索的结果和效率可满足当前的基本需求,但模型的查全率和查准率还有待进一步提高,需要持续关注三维模型检索相关技术,优化和补充三维模型检索功能。【结论】将该模型应用于CSpace系统后,可有效扩展三维模型的支持能力,为用户提供更为多样的三维模型检索和应用方式。[Objective] This paper aims to explore new content-based technology to retrieve and display 3D models, and expands the services of institutional repository. [Methods] First, we modified the open source 3D model retrieval algorithm created by the Taiwan University. Second, we obtained the orthogonal projection and features of the 3D models with the off-screen rendering technique. Finally, we used Java3D technique to generate the thumbnails of the 3D models, and then presented them online with the help of Three.js. [Results] We could retrieve 3D models from the institutional repository by submitting their URLs or the uploading methods. User could also use mouse to rotate or zoom in/out the 3D models while browsing them online. [Limitations] The proposed 3D model retrieval technique met needs of the institutional repositories. However, the recall and precision of the new system could to be improved with the help of the latest techniques in 3D model retrieval. [Conclusions] The proposed method helps the CSpace system manage 3D model collections effectively, which provides more options to retrieve and use the 3D models.

关 键 词：机构知识库 CSpace 三维模型检索 WEB3D Threeds 

分 类 号：TP391.3[自动化与计算机技术—计算机应用技术]