Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.最新文献_第10页

Encoding volumetric grids for streaming isosurface extraction 编码体网格流等值面提取

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/3DPVT.2004.49

A. Mascarenhas, M. Isenburg, Valerio Pascucci, J. Snoeyink

引用次数: 19

Real time visualization of 3D variable in time object based on cloud of points data gathered by coloured structure light projection system 基于彩色结构光投影系统采集的点云数据的三维时变物体实时可视化

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335297

P. Garbat, M. Wegiel, M. Kujawińska

{"title":"Real time visualization of 3D variable in time object based on cloud of points data gathered by coloured structure light projection system","authors":"P. Garbat, M. Wegiel, M. Kujawińska","doi":"10.1109/TDPVT.2004.1335297","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335297","url":null,"abstract":"The problem of virtual view creation has received increasing attention in recent years. Major current approaches are based on modified stereo vision systems. Recently the structure light measurement system based on digital light projection supported by special data coding and processing allow to rapid 3D shape acquisition. Application of this technology to record 3D data has increased significantly the accuracy of reconstructed shape and simplified data manipulation process. In the paper the general concept of virtual reality system supported by data gathered by means of structure light projection is presented. The methodology of conversion of cloud of measurement points (x,y,z,R,G,B) into virtual reality environment is described. It is supported by implementation of a virtual camera concept, as the mean for interactive object visualization. The methodology of real time 3D object visualization based on its coding by means of specially formed contours and their B-spline approximation is presented. The applicability of the methodology has been shown on numerically generated data which simulate performance of the measurement system. The total processing path was successfully tested.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"4 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":"122256591","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: 1

RoboScan: an automatic system for accurate and unattended 3D scanning RoboScan:一个自动系统，用于精确和无人值守的3D扫描

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/3DPVT.2004.107

M. Callieri, A. Fasano, G. Impoco, Paolo Cignoni, Roberto Scopigno, G. Parrini, G. Biagini

引用次数: 79

3D model retrieval based on 2D slice similarity measurements 基于二维切片相似度测量的三维模型检索

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335181

Jiantao Pu, Yi Liu, Guyu Xin, H. Zha, Weibin Liu, Y. Uehara

引用次数: 44

Stereo image coder based on MRF analysis for disparity estimation and morphological encoding 基于MRF分析的视差估计和形态编码的立体图像编码器

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335404

J. N. Ellinas, M. Sangriotis

{"title":"Stereo image coder based on MRF analysis for disparity estimation and morphological encoding","authors":"J. N. Ellinas, M. Sangriotis","doi":"10.1109/TDPVT.2004.1335404","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335404","url":null,"abstract":"We present a stereoscopic image coder based on the MRF model and MAP estimation of the disparity field. The MRF model minimizes the noise of the disparity compensation because it takes into account the residual energy, smoothness constraints and the occlusion field. The disparity compensation is formulated as a MAP-MRF problem in the spatial domain and the MRF field consists of the disparity vector and occlusion field, which is partitioned into three regions by an initial double-threshold setting. The MAP search is conducted in a block-based sense on one or two of the three regions, providing faster execution. The reference and the residual images are decomposed by a discrete wavelet transform and the transform coefficients are encoded by employing the morphological representation of wavelet coefficients algorithm. As a result of the morphological encoding, the reference and residual images together with the disparity vector field are transmitted in partitions lowering the total entropy. The experimental evaluation on synthetic and real images shows beneficial performance of the proposed algorithm.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"198 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":"115658347","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: 1

Panoramic image transform of omnidirectional images using discrete geometry techniques 利用离散几何技术对全向图像进行全景图像变换

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335295

A. Torii, A. Imiya

{"title":"Panoramic image transform of omnidirectional images using discrete geometry techniques","authors":"A. Torii, A. Imiya","doi":"10.1109/TDPVT.2004.1335295","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335295","url":null,"abstract":"This work proposes an omnidirectional-to-panoramic image transform with high accuracy using PDE-based resampling models. For the application of computer-vision techniques to omnidirectional images, the transformation of omnidirectional images to uniform-resolution quadric-surface images is needed in the two reasons. First, an omnidirectional image does not have a uniform resolution. Second, the development of the computer-vision-based techniques on the quadric surface is mathematically accurate compared with the development of the techniques on the omnidirectional image directly. Therefore, our aim is to generate uniform-resolution panoramic images on cylindrical surface from nonuniform-resolution omnidirectional images. The uniform-resolution panoramic images allow us to reconstruct 3D objects and scenes from omnidirectional images robustly. Our panoramic transformation selects the uniform resolution pixels on omnidirectional images employing the geometrical configuration of cameras in the estimation and resampling process. Therefore, our method is mathematically accurate comparing to the traditional panoramic transformation using point-to-point correspondences with the geometries of cameras and the cubic convolution.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"18 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":"115766629","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: 13

Using 3D-Bresenham for resampling structured grids 使用3D-Bresenham对结构化网格进行重采样

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335414

L. Dimitrov, M. Srámek

引用次数: 6

Synthetic image of multiresolution sketch leads to new features 多分辨率草图合成图像产生新的特征

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335407

Georgii Khachaturov, R. Moncayo-Muños

引用次数: 2

A statistical method for robust 3D surface reconstruction from sparse data 基于稀疏数据的三维曲面鲁棒重建的统计方法

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335212

V. Blanz, A. Mehl, T. Vetter, H. Seidel

引用次数: 196

Interactive walkthroughs using "morphable 3D-mosaics" 使用“变形3d马赛克”的交互式攻略

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335267

N. Komodakis, George Pagonis, G. Tziritas

{"title":"Interactive walkthroughs using \"morphable 3D-mosaics\"","authors":"N. Komodakis, George Pagonis, G. Tziritas","doi":"10.1109/TDPVT.2004.1335267","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335267","url":null,"abstract":"This work presents a hybrid (geometry- & image-based) technique suitable for providing interactive walkthroughs of large, complex outdoor scenes. Motion is restricted along a smooth predefined path and the input to the system is a sparse set of stereoscopic views at certain points (key-positions) along that path (one view per position). An approximate local 3D model is constructed from each view, capable of capturing photometric and geometric properties of the scene only locally. Then during the rendering process, a continuous morphing (both photometric & geometric) takes place between successive local 3D models, using what we call a \"morphable 3D-model\". The morphing proceeds in a physically-valid way. For this reason, a wide-baseline image matching technique is proposed, handling cases where the wide baseline between the two images is mainly due to a looming of the camera. Our system can be extended in the event of multiple stereoscopic views (and therefore multiple local models) per key-position of the path (related by a camera rotation). In that case one local 3D-mosaic (per key-position) is constructed comprising all local 3D models therein and a \"morphable 3D-mosaic\" is used during the rendering process. A partial-differential equation is adopted to handle the problem of geometric consistency of each 3D-mosaic.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"14 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":"116986828","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: 6