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Author |
B. Gotschy; Matthias S. Keil; H. Klos; I. Rystau |
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Title |
Transition from static to dynamic Jahn-Teller distortion in (P(C6 H5)4)2 C60| |
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Journal Article |
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1994 |
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Solid State Communications |
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92 |
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12 |
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935-938 |
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no |
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Admin @ si @ GKK1994 |
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631 |
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Author |
Miquel Ferrer; Dimosthenis Karatzas; Ernest Valveny; I. Bardaji; Horst Bunke |
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Title |
A Generic Framework for Median Graph Computation based on a Recursive Embedding Approach |
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Journal Article |
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Year |
2011 |
Publication |
Computer Vision and Image Understanding |
Abbreviated Journal |
CVIU |
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Volume |
115 |
Issue |
7 |
Pages |
919-928 |
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Keywords |
Median Graph, Graph Embedding, Graph Matching, Structural Pattern Recognition |
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The median graph has been shown to be a good choice to obtain a represen- tative of a set of graphs. However, its computation is a complex problem. Recently, graph embedding into vector spaces has been proposed to obtain approximations of the median graph. The problem with such an approach is how to go from a point in the vector space back to a graph in the graph space. The main contribution of this paper is the generalization of this previ- ous method, proposing a generic recursive procedure that permits to recover the graph corresponding to a point in the vector space, introducing only the amount of approximation inherent to the use of graph matching algorithms. In order to evaluate the proposed method, we compare it with the set me- dian and with the other state-of-the-art embedding-based methods for the median graph computation. The experiments are carried out using four dif- ferent databases (one semi-artificial and three containing real-world data). Results show that with the proposed approach we can obtain better medi- ans, in terms of the sum of distances to the training graphs, than with the previous existing methods. |
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DAG |
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no |
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IAM @ iam @ FKV2011 |
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1831 |
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Author |
Anna Salvatella; Maria Vanrell; Ramon Baldrich |
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Title |
Subtexture Components for Texture Description |
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Conference Article |
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Year |
2003 |
Publication |
1rst. Iberian Conference on Pattern Recognition and Image Analysis IbPRIA 2003 |
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Volume |
2652 |
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884-892 |
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Springer-Verlag |
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IbPRIA |
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CIC |
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no |
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CAT @ cat @ SVR2003 |
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421 |
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Author |
Debora Gil; Petia Radeva; Fernando Vilariño |
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Title |
Anisotropic Contour Completion |
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Conference Article |
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2003 |
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Proceedings of the IEEE International Conference on Image Processing |
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I-869 |
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In this paper we introduce a novel application of the diffusion tensor for anisotropic image processing. The Anisotropic Contour Completion (ACC) we suggest consists in extending the characteristic function of the open curve by means of a degenerated diffusion tensor that prevents any diffusion in the normal direction. We show that ACC is equivalent to a dilation with a continuous elliptic structural element that takes into account the local orientation of the contours to be closed. Experiments on contours extracted from real images show that ACC produces shapes able to adapt to any curve in an active contour framework. 1. |
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Barcelona, Spain |
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Barcelona, Spain |
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0-7803-7751-6 |
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ICIP |
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IAM;MV;MILAB;SIAI |
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no |
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IAM @ iam @ GRV2003 |
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1539 |
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Author |
Juan Ramon Terven Salinas; Bogdan Raducanu; Maria Elena Meza-de-Luna; Joaquin Salas |
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Title |
Head-gestures mirroring detection in dyadic social linteractions with computer vision-based wearable devices |
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Journal Article |
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Year |
2016 |
Publication |
Neurocomputing |
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NEUCOM |
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175 |
Issue |
B |
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866–876 |
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Keywords |
Head gestures recognition; Mirroring detection; Dyadic social interaction analysis; Wearable devices |
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Abstract |
During face-to-face human interaction, nonverbal communication plays a fundamental role. A relevant aspect that takes part during social interactions is represented by mirroring, in which a person tends to mimic the non-verbal behavior (head and body gestures, vocal prosody, etc.) of the counterpart. In this paper, we introduce a computer vision-based system to detect mirroring in dyadic social interactions with the use of a wearable platform. In our context, mirroring is inferred as simultaneous head noddings displayed by the interlocutors. Our approach consists of the following steps: (1) facial features extraction; (2) facial features stabilization; (3) head nodding recognition; and (4) mirroring detection. Our system achieves a mirroring detection accuracy of 72% on a custom mirroring dataset. |
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LAMP; 600.072; 600.068; |
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Admin @ si @ TRM2016 |
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2721 |
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Author |
Maria Vanrell; Jordi Vitria |
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Title |
Optimal 3x3 decomposable disks for morphological transformations |
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Journal Article |
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Year |
1997 |
Publication |
Image and Vision Computing |
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Volume |
15 |
Issue |
11 |
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845-854 |
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OR;CIC;MV |
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no |
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BCNPCL @ bcnpcl @ VaV1997c |
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543 |
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Author |
Daniel Ponsa; Xavier Roca |
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Title |
Multiple Model Approach to Deformable Shape Tracking |
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Conference Article |
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Year |
2003 |
Publication |
1rst. Iberian Conference on Pattern Recognition and Image Analysis IbPRIA 2003 |
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2652 |
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782-792 |
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Springer-Verlag |
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IbPRIA |
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ADAS;ISE |
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no |
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ADAS @ adas @ PoR2003 |
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397 |
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Author |
Craig Von Land; V. Lashin; A. Oriol; Juan J. Villanueva |
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Title |
Object-oriented Design of the DICOM Standard and its Application to Cardiovascular Imaging. |
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Conference Article |
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1997 |
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Computers In Cardiology |
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645-648 |
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no |
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ISE @ ise @ VLO1997 |
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68 |
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Author |
Joan Serrat; Ferran Diego; Felipe Lumbreras; Jose Manuel Alvarez; Antonio Lopez; C. Elvira |
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Title |
Dynamic Comparison of Headlights |
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Journal Article |
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Year |
2008 |
Publication |
Journal of Automobile Engineering |
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Volume |
222 |
Issue |
5 |
Pages |
643–656 |
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video alignment |
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ADAS |
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no |
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ADAS @ adas @ SDL2008a |
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958 |
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Author |
Petia Radeva |
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Title |
A Rule-Based Approach to Hand X-Ray image Segmentation. |
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Conference Article |
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1993 |
Publication |
Computer Analysis of Images and Patterns. CAIP |
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719 |
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641-648 |
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CAIP |
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MILAB |
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no |
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BCNPCL @ bcnpcl @ Rad1993a |
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171 |
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Author |
X. Binefa; Jordi Vitria; Xavier Roca |
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Title |
Deteccion de profundidad en imagenes monoculares mediante vision activa. |
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Journal Article |
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1993 |
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Revista de Optica Pura y Aplicada |
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26 |
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3 |
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636-648 |
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OR;ISE;MV |
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no |
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BCNPCL @ bcnpcl @ BVR1993 |
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144 |
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Author |
Cesar Isaza; Joaquin Salas; Bogdan Raducanu |
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Rendering ground truth data sets to detect shadows cast by static objects in outdoors |
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Journal Article |
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2014 |
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Multimedia Tools and Applications |
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MTAP |
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70 |
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1 |
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557-571 |
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Synthetic ground truth data set; Sun position; Shadow detection; Static objects shadow detection |
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In our work, we are particularly interested in studying the shadows cast by static objects in outdoor environments, during daytime. To assess the accuracy of a shadow detection algorithm, we need ground truth information. The collection of such information is a very tedious task because it is a process that requires manual annotation. To overcome this severe limitation, we propose in this paper a methodology to automatically render ground truth using a virtual environment. To increase the degree of realism and usefulness of the simulated environment, we incorporate in the scenario the precise longitude, latitude and elevation of the actual location of the object, as well as the sun’s position for a given time and day. To evaluate our method, we consider a qualitative and a quantitative comparison. In the quantitative one, we analyze the shadow cast by a real object in a particular geographical location and its corresponding rendered model. To evaluate qualitatively the methodology, we use some ground truth images obtained both manually and automatically. |
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Springer US |
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1380-7501 |
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LAMP; |
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Admin @ si @ ISR2014 |
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2229 |
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Author |
Felipe Lumbreras; Joan Serrat |
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Title |
Segmentation of petrographical images of marbles |
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1996 |
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Computers and Geosciences |
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22 |
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5 |
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547–558 |
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ADAS |
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no |
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ADAS @ adas @ LuS1996b |
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82 |
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Author |
Maryam Asadi-Aghbolaghi; Albert Clapes; Marco Bellantonio; Hugo Jair Escalante; Victor Ponce; Xavier Baro; Isabelle Guyon; Shohreh Kasaei; Sergio Escalera |
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Title |
Deep Learning for Action and Gesture Recognition in Image Sequences: A Survey |
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2017 |
Publication |
Gesture Recognition |
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539-578 |
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Action recognition; Gesture recognition; Deep learning architectures; Fusion strategies |
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Abstract |
Interest in automatic action and gesture recognition has grown considerably in the last few years. This is due in part to the large number of application domains for this type of technology. As in many other computer vision areas, deep learning based methods have quickly become a reference methodology for obtaining state-of-the-art performance in both tasks. This chapter is a survey of current deep learning based methodologies for action and gesture recognition in sequences of images. The survey reviews both fundamental and cutting edge methodologies reported in the last few years. We introduce a taxonomy that summarizes important aspects of deep learning for approaching both tasks. Details of the proposed architectures, fusion strategies, main datasets, and competitions are reviewed. Also, we summarize and discuss the main works proposed so far with particular interest on how they treat the temporal dimension of data, their highlighting features, and opportunities and challenges for future research. To the best of our knowledge this is the first survey in the topic. We foresee this survey will become a reference in this ever dynamic field of research. |
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HUPBA; no proj |
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Admin @ si @ ACB2017a |
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2981 |
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Author |
David Masip; Jordi Vitria |
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Title |
An Experimental Comparision of Dimensionality Reduction for Face Verification Methods |
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Conference Article |
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2003 |
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1rst. Iberian Conference on Pattern Recognition and Image Analysis IbPRIA 2003 |
Abbreviated Journal |
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2652 |
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530-537 |
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Springer-Verlag |
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IbPRIA |
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OR;MV |
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no |
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BCNPCL @ bcnpcl @ MaV2003a |
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386 |
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