Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.最新文献_第9页

Detection and compensation of image sequence jitter due to an unstable CCD camera for video tracking of a moving target 运动目标视频跟踪中CCD摄像机不稳定引起的图像序列抖动检测与补偿

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335203

M. A. Z. Pisheh, A. Sheikhi

{"title":"Detection and compensation of image sequence jitter due to an unstable CCD camera for video tracking of a moving target","authors":"M. A. Z. Pisheh, A. Sheikhi","doi":"10.1109/TDPVT.2004.1335203","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335203","url":null,"abstract":"Nowadays image motion analysis is considered as a significant subject in image processing and according to its characteristics is divided into different categories. This paper focuses on camera jitter as fast translations in image sequence due to an unstable platform. Our studies have led to do correlation matching [C-S. Fuh et al. (1991)] between well featured templates [M.A.Z. Pisheh et al. (2003), Y-P. Tan et al. (1996)] of successive frames to prevent aperture problems and thus have good estimation of the translations. But camera vibration may also suffer from rotation and scaling as nonlinear motions [G.J. Foster et al. (2000)] that may defect the matching process. Therefore mapping of 3D image points into camera image plane has been investigated to trace the effects of these nonlinear parameters in 2D motion equations [F.V. Heijden, (1996)]. Now by approximating these equations for minute rotation and bounded scaling between frame i and i+1, the set of motion equations with four unknowns ( rotation, scaling, horizontal/vertical translations) could be solved just by LSE [M.S. Grewal (2001)] method for a unique and optimized response. After all when we apply the estimated displacements on each frame for compensation, an stabilized sequence will conclude.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"61 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":"116023744","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: 9

Unsupervised motion classification by means of efficient feature selection and tracking 基于高效特征选择和跟踪的无监督运动分类

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335412

A. Sappa, Niki Aifanti, S. Malassiotis, M. Strintzis

引用次数: 5

Acquisition, modelling and rendering of very large urban environments 获取，建模和渲染非常大的城市环境

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335194

G. Boström, M. Fiocco, D. Puig, A. Rossini, J. Gonçalves, V. Sequeira

引用次数: 24

3D reconstruction of natural scenes with view-adaptive multi-texturing 基于自适应多纹理的自然场景三维重建

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335184

K. Müller, A. Smolic, P. Merkle, B. Kaspar, P. Eisert, T. Wiegand

{"title":"3D reconstruction of natural scenes with view-adaptive multi-texturing","authors":"K. Müller, A. Smolic, P. Merkle, B. Kaspar, P. Eisert, T. Wiegand","doi":"10.1109/TDPVT.2004.1335184","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335184","url":null,"abstract":"We present a 3D reconstruction and modeling system that operates on a number of input photographs that show a natural scene. Approaches from computer graphics and image processing are combined and performance is shown via experiments. Furthermore, reconstruction quality is analyzed w.r.t. the number and distribution of textures, used for reconstruction. The reconstruction pipeline starts with image acquisition, which consists of a number of photographs of the scene that are sequentially taken at different positions. Since the photographs are not acquired concurrently, they are influenced by different illumination conditions that we mandate to be preserved in the final 3D representation. In the second step, object segmentation is applied and camera calibration provided. This allows the application of shape-from-silhouette approaches, namely a hierarchical voxel approach, where different resolution layers are organized within an octree structure. For applying texture mapping, the voxel model is transformed into a wireframe, which provides smoothing of the object's surface and also reduces the number of surface primitives. Finally, a subset of original images is mapped onto the 3D geometry to provide texture information. Here, view-adaptive multi-texturing is used to preserve natural illumination. Intermediate views are interpolated automatically using adaptive real-time weight calculations for original textures.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"50 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":"114842443","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: 17

Exploitation of 3D images for face authentication under pose and illumination variations 基于姿态和光照变化的三维人脸识别图像开发

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335141

F. Tsalakanidou, S. Malassiotis, M. Strintzis

{"title":"Exploitation of 3D images for face authentication under pose and illumination variations","authors":"F. Tsalakanidou, S. Malassiotis, M. Strintzis","doi":"10.1109/TDPVT.2004.1335141","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335141","url":null,"abstract":"An appearance-based face authentication system integrating 2D color or intensity images and 3D data is presented. The proposed system is based on a low-cost 3D and color sensor, capable of synchronous real-time acquisition of 3D images and associated color images. Novel algorithms are proposed that exploit depth information and prior knowledge of face geometry and symmetry to achieve robust face detection, localization and authentication under conditions of background clutter, occlusion, face pose alteration and harsh illumination. A method for the enrichment of face databases with synthetically generated views depicting variations in pose and illumination is proposed to cope with head rotations and illumination variations, avoiding a cumbersome enrolment process. The performance of the proposed authentication scheme is tested thoroughly on a face database of 1500 images, recorded with the 3D acquisition system. Experimental results demonstrate significant gains resulting from the combined use of depth and color or intensity information, in comparison to the use of 2D images alone.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"23 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":"114358221","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: 5

Metrological analysis of a procedure for the automatic 3D modeling of dental plaster casts 牙石膏模型自动三维建模程序的计量分析

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335293

N. Brusco, S. Carmignato, M. Andreetto, G. Cortelazzo

引用次数: 7

Fan-Meshes: a geometric primitive for point-based description of 3D models and scenes Fan-Meshes:用于基于点的3D模型和场景描述的几何原语

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335281

Xiaotian Yan, Fang Meng, H. Zha

引用次数: 1

Enhanced surface reconstruction from wide baseline images 从宽基线图像增强表面重建

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335274

Z. Megyesi, D. Chetverikov

{"title":"Enhanced surface reconstruction from wide baseline images","authors":"Z. Megyesi, D. Chetverikov","doi":"10.1109/TDPVT.2004.1335274","DOIUrl":"https://doi.org/10.1109/TDPVT.2004.1335274","url":null,"abstract":"This work deals with the problem of dense matching from stereo images under wide baseline conditions. By considering the characteristic properties of widely separated views, we propose an extension to a recently published algorithm for detailed reconstruction of continuous surfaces. The algorithm compensates for the occurrent affine distortion between the views to allow low level intensity based comparison necessary for dense matching. The matching itself is performed by an enhanced region rowing based affine propagation method that takes surface distortion into account to handle complex piecewise-smooth surfaces. It is experimentally shown that this new method can achieve smooth and accurate reconstruction from wide baseline images of both indoor and outdoor scenes. To quantify the reconstruction results we have created realistic synthetic datasets with ground truth. These datasets form the core of a future testbed for comparison of different wide baseline surface reconstruction techniques. In the current study, results on the synthetic images are compared to the ground truth to measure the accuracy of our method.","PeriodicalId":191172,"journal":{"name":"Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.","volume":"7 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":"133673380","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: 9

Adaptive space carving 适应性空间雕刻

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/TDPVT.2004.1335195

A. Montenegro, P. Carvalho, M. Gattass, L. Velho

引用次数: 14

Facial view synthesis from a single image using shape from shading 使用阴影形状从单个图像合成面部视图

Proceedings. 2nd International Symposium on 3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004. Pub Date : 2004-09-06 DOI: 10.1109/3DPVT.2004.58

W. Smith, A. Robles-Kelly, E. Hancock

引用次数: 3