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Study on a method to precisely reconstruct real environments using metrical techniques and seamlessly integrate a mixed real/virtual world.

研究一种使用度量技术精确重建真实环境并无缝集成混合现实/虚拟世界的方法。

基本信息

批准号：
14580384
负责人：
NISHINO Hiroaki
金额：
$ 1.54万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

In this study, we have explored a new approach to reconstruct 3D geometric shapes of real outdoor and elastic objects with a high degree of accuracy. While traditional approaches cannot treat these objects, we have developed a new method to overcome the problem. The developed method integrate metrical techniques and 3D measurement technologies based on laser scanning and vision. It flexibly allows to reconstruct, visualize, and deform the objects with variable precision for 3D reconstruction. We further developed some application systems to evaluate effectiveness of the developed methods. This study has produced the following results :1.The 3D shape reconstruction method using Fourier transform is designed and implemented. It converts a point-could data acquired from a 3D range finder into a structured 3D data format to accurately reconstruct and flexibly deform the measured objects in a virtual environment.2.The 3D geometric modeling method of the reconstructed objects is invented. It allows users to intuitively deform the reconstructed 3D objects through a freehand sketch interface and an interactive genetic algorithm-based shape exploration strategy.3.The 3D modeling application systems are developed. Three application systems for 3D texture authoring, web icon design, and 3D indexing and retrieving of ceramics are implemented to evaluate the devised method.4.The experiments of the networked virtual environment are conducted. We have implement a network experiment test bed to assess and verify the effectiveness of the 3D data sharing and remote collaboration using the developed method. We have also implemented a virtual urban planning system to evaluate how the developed method can treat the real-world objects such as buildings and houses.These results are published in IEEE/ACM conference papers and IPSJ/IEICE journal papers.

在这项研究中，我们探索了一种新的方法来重建三维几何形状的真实的户外和弹性物体的高精度。虽然传统的方法不能处理这些对象，我们已经开发了一种新的方法来克服这个问题。该方法综合了测量技术和基于激光扫描和视觉的三维测量技术。它灵活地允许以可变精度重建、可视化和变形对象以进行3D重建。我们进一步开发了一些应用系统，以评估所开发的方法的有效性。主要研究成果如下：1.设计并实现了基于傅立叶变换的三维形状重建方法。该方法将三维测距仪采集的点云数据转换为结构化的三维数据格式，实现了虚拟环境中被测物体的精确重构和灵活变形。2.提出了重构物体的三维几何建模方法。通过手绘草图界面和交互式的基于遗传算法的形状探索策略，用户可以直观地对重建的三维物体进行变形。3.开发了三维建模应用系统。实现了三维纹理创作、Web图标设计和陶瓷三维索引与检索三个应用系统，对所提出的方法进行了评价。4.进行了网络虚拟环境的实验。我们已经实现了一个网络实验测试床，以评估和验证的有效性的三维数据共享和远程协作使用所开发的方法。我们还实现了一个虚拟的城市规划系统，以评估如何开发的方法可以处理现实世界的物体，如buildings和houses.These结果发表在IEEE/ACM会议论文和IPSJ/IEICE期刊论文。