Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)最新文献_第3页

Scaling up multiprojector immersive displays: the LightTwist project 放大多投影仪沉浸式显示:LightTwist项目

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.45

S. Roy

{"title":"Scaling up multiprojector immersive displays: the LightTwist project","authors":"S. Roy","doi":"10.1109/3DIM.2007.45","DOIUrl":"https://doi.org/10.1109/3DIM.2007.45","url":null,"abstract":"Summary form only given. As video projectors are becoming less expensive, we see more and more use of multiple projectors to create a single coherent image, the so-called multi- projectors displays. They provide higher resolution, larger screen size as well as more flexible screen shape. However, they must be carefully aligned and calibrated and the media, video as well as 3D, becomes harder to manage and display. By using a camera, it is possible to automatically align geometrically and photometrically the projectors using structured light. The LightTwist project aims at providing this alignment as well as media spatialization and synchronization and projection, in a real context, i.-e. outside the controlled environment of the research lab. In an attempt to truly free the artists from the limitations inherent to single projectors, this project works with common hardware and imposes very few constraints on the projector-screen geometry while simplifying the use of a large number of projectors. For cylindrical or spherical immersion the number of projectors tends to increase, thereby increasing the ratio of projected pixels to cameras pixels. This makes the accurate inversion of the camera-projector mapping a real challenge, especially in regions of overlap between the projectors. This \"pixel ratio problem\", as well as other issues such as camera calibration, real-time performance, and synchronization with sound, have been tested in this project and will be presented as well as examples of real installations.","PeriodicalId":442311,"journal":{"name":"Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123357527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Range Image Segmentation for Modeling and Object Detection in Urban Scenes 城市场景的距离图像分割建模与目标检测

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.42

C. Chen, I. Stamos

引用次数: 34

Construction of Feature Landmark Database Using Omnidirectional Videos and GPS Positions 利用全向视频和GPS定位构建特征地标数据库

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.16

Sei Ikeda, Tomokazu Sato, K. Yamaguchi, N. Yokoya

引用次数: 22

Multi-View Edge-based Stereo by Incorporating Spatial Coherence 结合空间相干性的多视点边缘立体

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.35

Gang Li, Yakup Genç, S. Zucker

引用次数: 3

A Study of Shape Similarity for Temporal Surface Sequences of People 人的时间表面序列的形状相似性研究

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.8

Peng Huang, J. Starck, A. Hilton

引用次数: 12

3D laser measurement system for large scale architectures using multiple mobile robots 基于多移动机器人的大型建筑三维激光测量系统

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.2

R. Kurazume, Yukihiro Tobata, Y. Iwashita, T. Hasegawa

{"title":"3D laser measurement system for large scale architectures using multiple mobile robots","authors":"R. Kurazume, Yukihiro Tobata, Y. Iwashita, T. Hasegawa","doi":"10.1109/3DIM.2007.2","DOIUrl":"https://doi.org/10.1109/3DIM.2007.2","url":null,"abstract":"In order to construct three dimensional shape models of large scale architectures by a laser range finder, a number of range images are normally taken from various viewpoints and these images are aligned using post-processing procedure such as ICP algorithm. However in general, before applying ICP algorithm, these range images have to be registered to correct positions roughly by a human operator in order to converge to precise positions. In addition, range images must be overlapped sufficiently each other by taking dense images from close viewpoints. On the other hand, if poses of the laser range finder at viewpoints can be identified precisely, local range images can be converted to the world coordinate system directly with simple transformation calculation. This paper proposes a new measurement system for large scale architectures using a group of multiple robots and an on-board laser range finder. Each measurement position is identified by the highly precise positioning technique named cooperative positioning system or CPS which utilizes the characteristics of multiple robots system. The proposed system can construct 3D shapes of large scale architectures without any post-processing procedure such as ICP algorithm and dense range measurements. The measurement experiments in unknown and large indoor/outdoor environments are successfully carried out using the newly developed measurement system consisting of three mobile robots named CPS-V.","PeriodicalId":442311,"journal":{"name":"Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122601825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Shape-merging and interpolation using class estimation for unseen voxels with a GPU-based efficient implementation 利用类估计对未见体素进行形状合并和插值，基于gpu的高效实现

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.47

Furukawa Ryo, Tomoya Itano, Akihiko Morisaka, Hiroshi Kawasaki

{"title":"Shape-merging and interpolation using class estimation for unseen voxels with a GPU-based efficient implementation","authors":"Furukawa Ryo, Tomoya Itano, Akihiko Morisaka, Hiroshi Kawasaki","doi":"10.1109/3DIM.2007.47","DOIUrl":"https://doi.org/10.1109/3DIM.2007.47","url":null,"abstract":"The merging of multiple range images obtained by 3D measurement systems for generating a single polygon mesh, and processing for filling holes caused by unmeasured data or insufficient range images are essential processes for CAD, digital archiving of shapes, and CG rendering. Many of the existing processes that have been proposed for merging and interpolating multiple shapes do not function well when the number of range images is small. In this paper, the space carving method is improved, and an interpolation algorithm is proposed which is capable of producing stable results even when the number of range images is small. In the proposed method, not only the observed voxels in a signed distance field, but also unseen voxels are determined as either inside or outside of an object using Bayes estimation. Characteristics of the proposed method include that closed surfaces are always obtained, and a GPU-based, efficient implementation is possible. In addition, in the case that the range image is obtained using an active stereo method, high precision estimation results can be achieved by using information regarding the light sources.","PeriodicalId":442311,"journal":{"name":"Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127157156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Stratified Self-calibration and Metric Reconstruction of a Trinocular Structured Light Vision System 三眼结构光视觉系统的分层自标定与度量重建

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.53

Y. Li, Suk-Yun Lee

引用次数: 3

Light stripe triangulation for multiple of moving rigid objects 用于多个运动的刚性物体的光条三角剖分

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.32

Takuya Funatomi, M. Iiyama, K. Kakusho, M. Minoh

{"title":"Light stripe triangulation for multiple of moving rigid objects","authors":"Takuya Funatomi, M. Iiyama, K. Kakusho, M. Minoh","doi":"10.1109/3DIM.2007.32","DOIUrl":"https://doi.org/10.1109/3DIM.2007.32","url":null,"abstract":"In this paper, we propose an extension of light stripe triangulation for multiple of moving rigid objects. With traditional light stripe triangulation, the acquired shape of moving object would be distorted. If the subject is a rigid object, we can correct the distortion in the acquired shape based on its motion. However, when the subject consists of multiple rigid objects that move differently one another, we need to segment the acquired shape into each object before correcting the distortion. When objects move largely, the segmentation becomes difficult without distortion correction since objects' motion would significantly distort acquired shape. We propose a method for acquiring distortion-free shape of each object by performing segmentation after correcting distortion. When we correct the distortion based on the motion of one of the objects before segmentation, corrected shape would include not only true shape of the object but also false shape of the other objects. We perform segmentation as detecting such false shape by using silhouettes of the whole subject at some moments. We can acquire true shape of each object by eliminating detected false shape from the corrected shape. We validate proposed method and evaluate the accuracy by experiment. We also demonstrate an articulated hand model which acquired by applying proposed method for measuring the real hand under assuming that the hand consists of 18 rigid objects.","PeriodicalId":442311,"journal":{"name":"Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126638548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Modeling and Calibration of Coupled Fish-Eye CCD Camera and Laser Range Scanner for Outdoor Environment Reconstruction 用于室外环境重建的鱼眼CCD相机与激光测距仪耦合建模与标定

Sixth International Conference on 3-D Digital Imaging and Modeling (3DIM 2007) Pub Date : 2007-08-21 DOI: 10.1109/3DIM.2007.34

X. Brun, F. Goulette

引用次数: 21