Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.最新文献_第6页

Automatic extraction of planar projections from panoramic range images 从全景距离图像中自动提取平面投影

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335199

A. Sappa

引用次数: 7

Visual-hull reconstruction from uncalibrated and unsynchronized video streams 从未校准和未同步的视频流中重建视觉船体

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335227

Sudipta N. Sinha, M. Pollefeys

{"title":"Visual-hull reconstruction from uncalibrated and unsynchronized video streams","authors":"Sudipta N. Sinha, M. Pollefeys","doi":"10.1109/TDPVT.2004.1335227","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335227","url":null,"abstract":"We present an approach for automatic reconstruction of a dynamic event using multiple video cameras recording from different viewpoints. Those cameras do not need to be calibrated or even synchronized. Our approach recovers all the necessary information by analyzing the motion of the silhouettes in the multiple video streams. The first step consists of computing the calibration and synchronization for pairs of cameras. We compute the temporal offset and epipolar geometry using an efficient RANSAC-based algorithm to search for the epipoles as well as for robustness. In the next stage the calibration and synchronization for the complete camera network is recovered and then refined through maximum likelihood estimation. Finally, a visual-hull algorithm is used to the recover the dynamic shape of the observed object. For unsynchronized video streams silhouettes are interpolated to deal with subframe temporal offsets. We demonstrate the validity of our approach by obtaining the calibration, synchronization and 3D reconstruction of a moving person from a set of 4 minute videos recorded from 4 widely separated video cameras.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"154 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133685740","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: 34

Venus subsurface ionosphere radar sounder: VENSIS 金星地下电离层雷达测深仪:VENSIS

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/3DPVT.2004.140

D. Biccari, D. Calabrese, D. Gurnett, R. Huff, L. Marinangeli, R. Jordan, E. Nielsen, G. Ori, G. Picardi, J. Plaut, F. Provvedi, R. Seu, E. Zampolini

引用次数: 2

A surface partitioning spectrum (SPS) for retrieval and indexing of 3D CAD models 一种用于三维CAD模型检索和索引的表面划分谱(SPS)

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335191

H. Rea, D. Clark, J. Corney, N. K. Taylor

引用次数: 14

Surface illuminance flow 表面照度流

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335134

S. Pont, J. Koenderink

{"title":"Surface illuminance flow","authors":"S. Pont, J. Koenderink","doi":"10.1109/TDPVT.2004.1335134","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335134","url":null,"abstract":"We introduce the concept of \"surface illuminance flow\" in two steps. First we reiterate the notion of the \"light vector\", and then proceed to decompose the light vector into a scalar \"normal illuminance\" and a vector \"surface illuminance flow\". The scalar normal illuminance generates the familiar illuminance pattern that is often known as the \"shading\". The vector surface illuminance flow is irrelevant for smooth surfaces (which probably explains why it is conventionally ignored) but it generates the texture due to surface mesorelief. We show how observation of the illuminance induced texture leads to robust inferences of the surface illuminance flow direction modulo 180/spl deg/. This makes surface illuminance flow a property that is observable in natural scenes. Much like optical flow, the surface illuminance flow is largely due to a global property that exists independent of local structure, namely the direction of the general illuminating beam (sunlight or light from the overcast sky in a typical outdoors scene). However, due to the fact that there exists \"true screening\" in radiometry (thus removing any hope for a \"field theory\" of radiometry) the local scene structure has an influence on the local light field. Such \"vignetting\" is a main cause of the complexity of radiometry, the other cause being the ever present multiple scatterings. This complicates matters but also introduces additional sources of information. We illustrate instances of the observation of illuminance flow in scenes. We also present a database of roughly spherical objects, illuminated in a number of standard ways that we have used to study illuminance flow over actual rough objects.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130055339","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: 21

Pyramid coordinates for morphing and deformation 用于变形和变形的金字塔坐标

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/tdpvt.2004.1335149

A. Sheffer, Vladislav Kraevoy

引用次数: 151

User-controlled simplification of polygonal models 用户控制的多边形模型简化

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335413

M. Hussain, Y. Okada, K. Niijima

{"title":"User-controlled simplification of polygonal models","authors":"M. Hussain, Y. Okada, K. Niijima","doi":"10.1109/TDPVT.2004.1335413","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335413","url":null,"abstract":"Polygonal models are ubiquitous in computer graphics but their real time manipulation and rendering especially in interactive application environments have become a threat because of their huge sizes and complexity. A whole family of automatic algorithms emerged during the last decade to help out this problem, but they reduce the complexity of the models uniformly without caring about semantic importance of localized parts of a mesh. Only a few algorithms deal with adaptive simplification of polygonal models. We propose a new model for user-driven simplification exploiting the simplification hierarchy and hypertriangulation model [P. Cignoni et al.] that lends a user the most of the functionalities of existing adaptive simplification algorithms in one place and is quite simple to implement. The proposed new underlying data structures are compact and support real time navigation across continuous LODs of a model; any desirable LOD can be extracted efficiently and can further be fine-tuned. The proposed model for adaptive simplification supports two key operations for selective refinement and selective simplification; their effect has been shown on various polygonal models. Comparison with related work shows that the proposed model provides combined environment at reduced overhead of memory space usage and faster running times.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127667107","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

Surface reconstruction from the projection of points, curves and contours 从投影的点，曲线和轮廓的表面重建

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335214

J. E. Solem, Fredrik Kahl

引用次数: 9

Reliability and judging fatigue reduction in 3D perceptual quality estimation 三维感知质量估计的可靠性和判断疲劳减少

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335397

I. Cheng, A. Basu

引用次数: 11

Acquiring height maps of faces from a single image 从单幅图像中获取人脸的高度图

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335193

Mario Castelán, E. Hancock

引用次数: 16