ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.最新文献_第4页

Multiple faces tracking using local statistics 多面跟踪使用本地统计

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195377

S. Harasse, L. Bonnaud, M. Desvignes

引用次数: 4

Volumetric deformable face models for cranio-facial reconstruction 颅面重建的体积可变形面部模型

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195437

D. Vandermeulen, Peter Claes, R. Suetens, S. D. Greef, Guy Willems

{"title":"Volumetric deformable face models for cranio-facial reconstruction","authors":"D. Vandermeulen, Peter Claes, R. Suetens, S. D. Greef, Guy Willems","doi":"10.1109/ISPA.2005.195437","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195437","url":null,"abstract":"In forensic cranio-facial reconstruction, facial features of an unknown individual are estimated from an unidentified skull, based on a mixture of experimentally obtained guidelines on the relationship between soft tissues and the underlying skeleton. In this paper, we investigate the possibility of using full 3-D cross-sectional CT images for establishing a reference database of densely sampled distances between the external surfaces of the skull and skin for automated cranio-facial reconstruction. For each CT image in the reference database, the hard tissue (skull) and extra-cranial soft tissue (skin) volumes are segmented and transformed into signed distance transform (sDT) maps. A simplified procedure for cranio-facial reconstruction was implemented, by warping all reference skull sDT maps to the target skull sDT. These warps are subsequently applied to the reference skin sDT maps and the zero level set of their arithmetic average is defined as the reconstructed target skin surface. Initial results are shown to proof the validity of the concept, but further refinement of the procedures involved and a qualitative validation are required.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129956430","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: 15

Statistics in face recognition: analyzing probability distributions of PCA, ICA and LDA performance results 人脸识别中的统计学:分析PCA、ICA和LDA性能结果的概率分布

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195425

K. Delac, M. Grgic, S. Grgic

{"title":"Statistics in face recognition: analyzing probability distributions of PCA, ICA and LDA performance results","authors":"K. Delac, M. Grgic, S. Grgic","doi":"10.1109/ISPA.2005.195425","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195425","url":null,"abstract":"In this paper we address the issue of evaluating face recognition algorithms using descriptive statistical tools. By using permutation methodology in a Monte Carlo sampling procedure, we investigate recognition rate results probability distributions of some well-known algorithms (namely, PCA, ICA and LDA). With a lot of contradictory literature on comparisons of those algorithms, we believe that this kind of independent study is important and serves to better understanding of each algorithm. We show how simplistic approach to comparing these algorithms can be misleading and propose a full statistical methodology to be used in future reports. By reporting detailed descriptive statistical results, this paper is the only available detailed report on PCA, ICA and LDA comparative performance currently available in literature. Our experiments show that the exact choice of images to be in a gallery or in a probe set has great effect on recognition results and this fact further emphasizes the importance of reporting detailed results. We hope that this study helps to advance the state of experiment design in computer vision.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117326114","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: 33

A 2D+3D face authentication system robust under pose and illumination variations 一种对姿态和光照变化具有鲁棒性的2D+3D人脸认证系统

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195410

F. Tsalakanidou, S. Malassiotis, M. Strintzis

引用次数: 5

Statistically deformable face models for cranio-facial reconstruction 颅面重建的统计变形面部模型

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.2498/cit.2006.01.03

P. Claes, D. Vandermeulen, S. D. Greef, G. Willems, P. Suetens

{"title":"Statistically deformable face models for cranio-facial reconstruction","authors":"P. Claes, D. Vandermeulen, S. D. Greef, G. Willems, P. Suetens","doi":"10.2498/cit.2006.01.03","DOIUrl":"https://doi.org/10.2498/cit.2006.01.03","url":null,"abstract":"Forensic facial reconstruction aims at estimating the facial outlook associated to an unknown skull specimen. Estimation is based on tabulated average values of soft tissue thicknesses measured at a sparse set of landmarks on the skull. Traditional 'plastic' methods apply modeling clay or plasticine on a cast of the skull approximating the estimated tissue depths at the landmarks and interpolating in between. Current computerized techniques mimic this landmark interpolation procedure using a single facial surface template. However, the resulting reconstruction is biased by the specific choice of the template. We reduce this bias by using a flexible statistical model of a dense set of facial surface points combined with an associated sparse set of skull landmarks. The reconstruction is obtained by fitting the model skull landmarks to the corresponding landmarks indicated on a digital copy of the skull to be reconstructed. The fitting process alternates between changing the face-specific statistical model parameters and interpolating the remaining landmark fit error using a minimal bending thin-plate spline (TPS) based deformation. This iterative process is shown by experiment to converge to a realistic reconstruction of the face, independent of the initial template.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"328 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132672346","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: 49

Robust recognition of 3-D faces based on analytic forms and spectral analysis 基于解析形式和谱分析的三维人脸鲁棒识别

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195405

E. Paquet, M. Rioux

引用次数: 2

Face image validation system 人脸图像验证系统

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195379

M. Subašić, S. Lončarić, T. Petkovic, H. Bogunović, V. Krivec

{"title":"Face image validation system","authors":"M. Subašić, S. Lončarić, T. Petkovic, H. Bogunović, V. Krivec","doi":"10.1109/ISPA.2005.195379","DOIUrl":"https://doi.org/10.1109/ISPA.2005.195379","url":null,"abstract":"In this paper, we present a novel face image validation system. The purpose of the system is to evaluate quality of face images for identification documents and to detect face images that do not satisfy the image quality requirements. To determine image quality the system first performs face detection in order to find facial features and determine image background. The system consists of seventeen separate tests. Each test checks one quality aspect of the face or of the whole image and compares it to the requirements of International Civil Aviation Organization (ICAO) proposals for machine readable travel documents. The requirements are designed to ensure good conditions for automatic face recognition. The tests are organized in a hierarchical way so the low-level tests are executed first and the high-level tests are executed last. The result of a test is a fuzzy value representing a measure of the image quality. Each test has a set of parameters that can be tuned to produce desired performance of the test. Initial testing of the system has been performed on the set of 190 face images and has demonstrated the feasibility of the method.","PeriodicalId":238993,"journal":{"name":"ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121557152","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: 37

A connexionist approach for robust and precise facial feature detection in complex scenes 一种复杂场景中鲁棒和精确的面部特征检测方法

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195430

S. Duffner, Christophe Garcia

引用次数: 33

Metric and non-metric distances on Z/sup n/ by generalized neighbourhood sequences 广义邻域序列在Z/sup上的度量和非度量距离

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195412

B. Nagy

引用次数: 15

Quantification of blood flow in great vessels from cardiac magnetic resonance imaging 心脏磁共振成像中大血管血流定量研究

ISPA 2005. Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis, 2005. Pub Date : 2005-10-24 DOI: 10.1109/ISPA.2005.195397

M. Ledesma-Carbayo, C. Montejo, N. Malpica, L. J. Jiménez-Borreguero, A. Santos

引用次数: 1