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Matthias S. Keil; Jordi Vitria |
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Does the brain generate representations of smooth brightness gradients? A novel account for Mach bands, Chevreul’s illusion, and a variant of the Ehrenstein disk |
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2005 |
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European Conference on Visual Perception |
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OR;MV |
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BCNPCL @ bcnpcl @ KeV2005b |
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607 |
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Enric Marti; Debora Gil; Carme Julia |
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A PBL experience in the teaching of Computer Graphics |
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2005 |
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EUROGRAPHICS Proceedings |
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5 |
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1 |
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95-103 |
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project-based learning; computer graphics education; Open GL; rendering techniques; computer animation techniques; Graphics packages; Hierarchy and geometric transformations; Animation; Color; shading; shadowing and texture; fractals; hidden line/surface removal; Problem Based Learning |
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Project-Based Learning (PBL) is an educational strategy to improve student’s learning capability that, in recent years, has had a progressive acceptance in undergraduate studies. This methodology is based on solving a problem or project in a student working group. In this way, PBL focuses on learning the necessary tools to correctly find a solution to given problems. Since the learning initiative is transferred to the student, the PBL method promotes students own abilities. This allows a better assessment of the true workload that carries out the student in the subject. It follows that the methodology conforms to the guidelines of the Bologna document, which quantifies the student workload in a subject by means of the European credit transfer system (ECTS). PBL is currently applied in undergraduate studies needing strong practical training such as medicine, nursing or law sciences. Although this is also the case in engineering studies, amazingly, few experiences have been reported. In this paper we propose to use PBL in the educational organization of the Computer Graphics subjects in the Computer Science degree. Our PBL project focuses in the development of a C++ graphical environment based on the OpenGL libraries for visualization and handling of different graphical objects. The starting point is a basic skeleton that already includes lighting functions, perspective projection with mouse interaction to change the point of view and three predefined objects. Students have to complete this skeleton by adding their own functions to solve the project. A total number of 10 projects have been proposed and successfully solved. The exercises range from human face rendering to articulated objects, such as robot arms or puppets. In the present paper we extensively report the statement and educational objectives for two of the projects: solar system visualization and a chess game. We report our earlier educational experience based on the standard classroom theoretical, problem and practice sessions and the reasons that motivated searching for other learning methods. We have mainly chosen PBL because it improves the student learning initiative. We have applied the PBL educational model since the beginning of the second semester. The student’s feedback increases in his interest for the subject. We present a comparative study of the teachers’ and students’ workload between PBL and the classic teaching approach, which suggests that the workload increase in PBL is not as high as it seems. |
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Dublin; Ireland; September 2005 |
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EUROGRAPHICS |
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IAM;ADAS; |
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IAM @ iam @ MGJ2005 |
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1593 |
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David Masip; M. Bressan; Jordi Vitria |
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Feature extraction methods for real-time face detection and classification |
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2005 |
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Eurasip Journal on Applied Signal Processing, 13: 2061–2071 |
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OR;MV |
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BCNPCL @ bcnpcl @ MBV2005 |
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612 |
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Author |
Debora Gil; Aura Hernandez-Sabate; Antoni Carol; Oriol Rodriguez; Petia Radeva |
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Title |
A Deterministic-Statistic Adventitia Detection in IVUS Images |
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2005 |
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ESC Congress |
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Electron microscopy; Unbending; 2D crystal; Interpolation; Approximation |
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Plaque analysis in IVUS planes needs accurate intima and adventitia models. Large variety in adventitia descriptors difficulties its detection and motivates using a classification strategy for selecting points on the structure. Whatever the set of descriptors used, the selection stage suffers from fake responses due to noise and uncompleted true curves. In order to smooth background noise while strengthening responses, we apply a restricted anisotropic filter that homogenizes grey levels along the image significant structures. Candidate points are extracted by means of a simple semi supervised adaptive classification of the filtered image response to edge and calcium detectors. The final model is obtained by interpolating the former line segments with an anisotropic contour closing technique based on functional extension principles. |
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Stockholm; Sweden; September 2005 |
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IAM;MILAB |
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IAM @ iam @ RMF2005a |
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1523 |
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Angel Sappa; Niki Aifanti; Sotiris Malassiotis; N. Grammalidis |
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Title |
Survey of 3D Human Body Representations |
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2005 |
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Encyclopedia of Information Science and Technology, 1(5):2696–2701 |
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ADAS @ adas @ SAM2005a |
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497 |
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Niki Aifanti; Angel Sappa; N. Grammalidis; Sotiris Malassiotis |
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Human Motion Tracking and Recognition |
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2005 |
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Encyclopedia of Information Science and Technology, 1(5):1355–1360 |
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ADAS @ adas @ ASG2005 |
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496 |
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Jordi Gonzalez; Javier Varona; Xavier Roca; Juan J. Villanueva |
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A Comparison Framework for Walking Performances using aSpaces |
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2005 |
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Electronic Letters on Computer Vision and Image Analysis, Special Issue on articulated Motion, 5(3):105–116 (Electronic Letters: IF: 1.016) |
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ISE @ ise @ GVR2005 |
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623 |
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Angel Sappa; Niki Aifanti; Sotiris Malassiotis; Michael G. Strintzis |
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Prior Knowledge Based Motion Model Representation |
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2005 |
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Electronic Letters on Computer Vision and Image Analysis, Special Issue on Articulated Motion & Deformable Objects, 5(3):55–67 (Electronic Letters: IF: 1.016) |
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Dani Rowe |
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Probabilistic Image-based Tracking in Complex Human Environments |
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2005 |
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CVC Technical Report #92 |
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Admin @ si @ Row2005 |
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601 |
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Ignasi Rius |
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Articulated 3D Human Motion Moldeling for Tracking and Reconstruction |
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2005 |
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CVC Technical Report #91 |
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Admin @ si @ Riu2005 |
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Bogdan Raducanu; Jordi Vitria |
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A Robust Particle Filter-based Face Tracker Using a Combination of Color and Geometric Information |
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2005 |
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CVC Technical Report #90 |
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OR;MV |
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BCNPCL @ bcnpcl @ RaV2005c |
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617 |
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Alicia Fornes |
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Analysis of Old Handwritten Musical Scores |
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2005 |
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CVC Technical Report #88 |
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DAG @ dag @ For2005 |
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575 |
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Anton Cervantes |
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Biometric Newborn Identification |
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2005 |
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CVC Technical Report #87 |
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Joan Mas |
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Syntactic approaches to recognize bi-dimensional shapes in graphics recognition. Application to sketching interfaces |
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2005 |
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CVC Technical Report #86 |
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Sergio Escalera |
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Fast traffic model matching and recognition on gray-scale images |
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2005 |
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CVC Technical Report #84 |
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MILAB; HuPBA |
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