大型三维网格模型远程绘制的新机理研究

项目名称： 大型三维网格模型远程绘制的新机理研究

项目编号： No.61300135

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 金龙存

作者单位： 华南理工大学

项目金额： 23万元

中文摘要： 随着数字化存档技术的快速进步，我们能获取和储存高精度数字文化遗产的大型三维网格模型。让普通用户通过互联网更多地分享数字文化遗产，能进一步提升我国文化遗产的知名度。针对大型三维网格模型的后续应用问题，本课题研究如何让普通用户通过互联网访问高价值数字文化遗产的各种大型三维网格模型的问题。研究基于图像的混合远程绘制原理，提出单一服务器/多客户端结构的基于光线几何修正的图像绘制方法。对绘制的大型三维网格模型实现纹理图像的采样，利用哈希函数构建纹理图像库。建立大型三维网格模型表面的目标光线函数，实现远程交互式视点重建方法。利用基于三维低分辨率网格和纹理图像库逼真地远程绘制大型三维网格模型，而高价值的大型三维网格模型的数字版权又可以得到保护。相比现有单纯基于图像的远程绘制和基于模型的远程绘制，本课题为网格模型的远程绘制提供一种新的思路。

中文关键词： 大型三维网格模型；光线几何修正；图像绘制；混合远程绘制；漫射颜色计算

英文摘要： With rapid progress of digital archiving technology, we can obtain and store large 3D mesh models of high-precision digital cultural heritage. The goal of this project is to let ordinary users better sharing them by internet. Then, it can let our national cultural heritage better-known. For large three-dimensional mesh models of the subsequent applications, the topic of this research is how to make the ordinary users through internet can access all kinds of costliness of large 3D mesh models. We address a theory of image-based mixed remote rendering, and propose a noval method for geometric correction by ray of image-based rendering on a single server/clients structure. We sample texture images from rendered large 3D mesh models, and build texture image database using hash functions. We also build objective ray functions on surface of large 3D mesh models. We realise a method of interactive viewpoint reconstruction in remote clients. We distinctly render remote large 3D mesh models using 3D low-level mesh and texture images' database. Then, the digital copyright of costliness large 3D mesh models also is protected to prevent piracy. This proposal addresses a novel thought for mesh models of remote rendering to compare with being pure image-based and model-based remote rendering.

英文关键词： Large 3D Mesh Models；Geometric Correction by Ray；Image-based Rendering；Mixed Remote Rendering；Calculation of Diffuse Colors