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| Author | Debora Gil; Jose Maria-Carazo; Roberto Marabini | ||||
| Title | On the nature of 2D crystal unbending | Type  |
Journal Article | ||
| Year | 2006 | Publication | Journal of Structural Biology | Abbreviated Journal | |
| Volume | 156 | Issue | 3 | Pages | 546-555 |
| Keywords | Electron microscopy | ||||
| Abstract | Crystal unbending, the process that aims to recover a perfect crystal from experimental data, is one of the more important steps in electron crystallography image processing. The unbending process involves three steps: estimation of the unit cell displacements from their ideal positions, extension of the deformation field to the whole image and transformation of the image in order to recover an ideal crystal. In this work, we present a systematic analysis of the second step oriented to address two issues. First, whether the unit cells remain undistorted and only the distance between them should be changed (rigid case) or should be modified with the same deformation suffered by the whole crystal (elastic case). Second, the performance of different extension algorithms (interpolation versus approximation) is explored. Our experiments show that there is no difference between elastic and rigid cases or among the extension algorithms. This implies that the deformation fields are constant over large areas. Furthermore, our results indicate that the main source of error is the transformation of the crystal image. | ||||
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| ISSN | 1047-8477 | ISBN | Medium | ||
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| Notes | IAM; | Approved | no | ||
| Call Number | IAM @ iam @ GCM2006 | Serial | 1519 | ||
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| Author | Debora Gil; Aura Hernandez-Sabate; Oriol Rodriguez; J. Mauri; Petia Radeva | ||||
| Title | Statistical Strategy for Anisotropic Adventitia Modelling in IVUS | Type |
Journal Article | ||
| Year | 2006 | Publication | IEEE Transactions on Medical Imaging | Abbreviated Journal | |
| Volume | 25 | Issue | 6 | Pages | 768-778 |
| Keywords | Corners; T-junctions; Wavelets | ||||
| Abstract | Vessel plaque assessment by analysis of intravascular ultrasound sequences is a useful tool for cardiac disease diagnosis and intervention. Manual detection of luminal (inner) and mediaadventitia (external) vessel borders is the main activity of physicians in the process of lumen narrowing (plaque) quantification. Difficult definition of vessel border descriptors, as well as, shades, artifacts, and blurred signal response due to ultrasound physical properties trouble automated adventitia segmentation. In order to efficiently approach such a complex problem, we propose blending advanced anisotropic filtering operators and statistical classification techniques into a vessel border modelling strategy. Our systematic statistical analysis shows that the reported adventitia detection achieves an accuracy in the range of interobserver variability regardless of plaque nature, vessel geometry, and incomplete vessel borders. Index Terms–-Anisotropic processing, intravascular ultrasound (IVUS), vessel border segmentation, vessel structure classification. | ||||
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| Notes | IAM;MILAB | Approved | no | ||
| Call Number | IAM @ iam @ GHR2006 | Serial | 1525 | ||
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| Author | Debora Gil; Petia Radeva | ||||
| Title | Inhibition of false landmarks | Type |
Journal Article | ||
| Year | 2006 | Publication | Pattern Recognition Letters | Abbreviated Journal | PRL |
| Volume | 27 | Issue | 9 | Pages | 1022-1030 |
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| Abstract | Corners and junctions are landmarks characterized by the lack of differentiability in the unit tangent to the image level curve. Detectors based on differential operators are not, by their own definition, the best posed as they require a higher degree of differentiability to yield a reliable response. We argue that a corner detector should be based on the degree of continuity of the tangent vector to the image level sets, work on the image domain and need no assumptions on neither the image local structure nor the particular geometry of the corner/junction. An operator measuring the degree of differentiability of the projection matrix on the image gradient fulfills the above requirements. Because using smoothing kernels leads to corner misplacement, we suggest an alternative fake response remover based on the receptive field inhibition of spurious details. The combination of both orientation discontinuity detection and noise inhibition produce our inhibition orientation energy (IOE) landmark locator. | ||||
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| Publisher | Elsevier Science Inc. | Place of Publication | New York, NY, USA | Editor | |
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| ISSN | 0167-8655 | ISBN | Medium | ||
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| Notes | IAM;MILAB | Approved | no | ||
| Call Number | IAM @ iam @ GiR2006 | Serial | 1529 | ||
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| Author | Enric Marti; Carme Julia; Debora Gil | ||||
| Title | A PBL Experience in the Teaching of Computer Graphics | Type |
Journal Article | ||
| Year | 2006 | Publication | Computer Graphics Forum | Abbreviated Journal | CGF |
| Volume | 25 | Issue | 1 | Pages | 95-103 |
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| Abstract | 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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| Publisher | Computer Graphics Forum | Place of Publication | Computer Vision CenterComputer Science Department Escola Tcnica Superior d’Enginyeria (UAB), Edifi | Editor | |
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| Notes | IAM;ADAS; | Approved | no | ||
| Call Number | IAM @ iam @ MJG2006a | Serial | 1607 | ||
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| Author | Oriol Rodriguez-Leor; Debora Gil; Eduard Fernandez-Nofrerias | ||||
| Title | Analisis en los cambios en el nivel de gris en las secuencias angiograficas mediante descriptores estadisticos para determinar la perfusion miocardica | Type |
Journal Article | ||
| Year | 2006 | Publication | Revista Española de Cardiología | Abbreviated Journal | REC |
| Volume | 59 Supl 2-166 | Issue | 2 | Pages | 128 |
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| Notes | IAM; | Approved | no | ||
| Call Number | IAM @ iam @ RGF2006 | Serial | 1640 | ||
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| Author | Fadi Dornaika; Angel Sappa | ||||
| Title | Improving Appearance-Based 3D Face Tracking Using Sparse Stereo Data | Type |
Miscellaneous | ||
| Year | 2006 | Publication | International Conference on Computer Vision Theory and Applications, (2): 310–317 | Abbreviated Journal | |
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| Notes | ADAS | Approved | no | ||
| Call Number | ADAS @ adas @ DoS2006a | Serial | 636 | ||
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| Author | Carme Julia; Joan Serrat; Antonio Lopez; Felipe Lumbreras; Daniel Ponsa | ||||
| Title | Motion segmentation through factorization. Application to night driving assistance | Type |
Miscellaneous | ||
| Year | 2006 | Publication | International Conference on Computer Vision Theory and Applications, (2) | Abbreviated Journal | |
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| Notes | ADAS | Approved | no | ||
| Call Number | ADAS @ adas @ JSL2006a | Serial | 638 | ||
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| Author | Jordi Gonzalez; Dani Rowe; Juan Andrade; Juan J. Villanueva | ||||
| Title | Efficient Management of Multiple Agent Tracking Through Observation Handling | Type |
Miscellaneous | ||
| Year | 2006 | Publication | 6th IASTED International Conference on Visualization, Imaging and Image Processing (VIIP´06) | Abbreviated Journal | |
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| Address | Palma de Mallorca (Spain) | ||||
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| Notes | Approved | no | |||
| Call Number | ISE @ ise @ GRA2006 | Serial | 662 | ||
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| Author | Michael Villamizar; A. Sanfeliu; Juan Andrade | ||||
| Title | Computation of Rotation Local Invariant Features using the Integral Image for Real Time Object Detection | Type |
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| Year | 2006 | Publication | 18th International Conference on Pattern Recognition, 81–85 | Abbreviated Journal | |
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| Address | Hong Kong | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ si @ VSA2006a | Serial | 663 | ||
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| Author | Michael Villamizar; A. Sanfeliu; Juan Andrade | ||||
| Title | Orientation Invariant Features for Multiclass Object Recognition | Type |
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| Year | 2006 | Publication | 11th Iberoamerican Congress on Pattern Recognition (CIARP´06), LNCS 4225: 655–664 | Abbreviated Journal | |
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| Address | Cancun (Mexico) | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ si @ VSA2006b | Serial | 664 | ||
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| Author | Juan Andrade; F. Thomas | ||||
| Title | Wire-Based Tracking using Mutual Information | Type |
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| Year | 2006 | Publication | 10th International Symposium on Advances in Robot Kinematics, 3–14 | Abbreviated Journal | |
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| Address | Ljubljana (Slovenia) | ||||
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| Notes | Approved | no | |||
| Call Number | Admin @ si @ AnT2006 | Serial | 665 | ||
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| Author | T. Alejandra Vidal; Andrew J. Davison; Juan Andrade; David W. Murray | ||||
| Title | Active Control for Single Camera SLAM | Type |
Miscellaneous | ||
| Year | 2006 | Publication | IEEE International Conference on Robotics and Automation, 1930–1936 | Abbreviated Journal | |
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| Address | Orlando (Florida) | ||||
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| Notes | Approved | no | |||
| Call Number | DAG @ dag @ VDA2006 | Serial | 666 | ||
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| Author | David Geronimo; Angel Sappa; Antonio Lopez; Daniel Ponsa | ||||
| Title | Pedestrian Detection Using AdaBoost Learning of Features and Vehicle Pitch Estimation | Type |
Miscellaneous | ||
| Year | 2006 | Publication | 6th IASTED International Conference on Visualization, Imaging and Image Processing | Abbreviated Journal | VIIP |
| Volume | Issue | Pages | 400–405 | ||
| Keywords | ADAS, pedestrian detection, adaboost learning, pitch estimation, haar wavelets, edge orientation histograms. | ||||
| Abstract | In this paper we propose a combination of different Haar filter sets and Edge Orientation Histograms (EOH) in order to learn a model for pedestrian detection. As we will show, with the addition of EOH we obtain better ROCs than using Haar filters alone. Hence, a model consisting of discriminant features, selected by AdaBoost, is applied at pedestrian-sized image windows in order to perform
the classification. Additionally, taking into account the final application, a driver assistance system with realtime requirements, we propose a novel stereo-based camera pitch estimation to reduce the number of explored windows. With this approach, the system can work in urban roads, as will be illustrated by current results. |
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| Address | Palma de Mallorca (Spain) | ||||
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| Notes | ADAS | Approved | no | ||
| Call Number | ADAS @ adas @ GSL2006 | Serial | 672 | ||
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| Author | V. Kober; Mikhail Mozerov; J. Alvarez-Borrego; I.A. Ovseyevich | ||||
| Title | Pattern Recognition of Fragmented Objects with Adaptive Correlation Filters | Type |
Miscellaneous | ||
| Year | 2006 | Publication | Topical Meeting on Optoinformatics / Information Photonics, 150–151 | Abbreviated Journal | |
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| Address | Saint-Petersburg (Russia) | ||||
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| Notes | ISE | Approved | no | ||
| Call Number | ISE @ ise @ KMA2006b | Serial | 674 | ||
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| Author | Mikhail Mozerov; V. Kober; I.A. Ovseyevich | ||||
| Title | A Stereo Matching Algorithm with Global Smoothness Criterion | Type |
Miscellaneous | ||
| Year | 2006 | Publication | Topical Meeting on Optoinformatics / Information Photonics, 133–135 | Abbreviated Journal | |
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| Address | Saint-Petersburg (Russia) | ||||
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| Notes | ISE | Approved | no | ||
| Call Number | ISE @ ise @ MKO2006 | Serial | 675 | ||
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