| Records |
| Author |
Joan Mas; B. Lamiroy; Gemma Sanchez; Josep Llados |
| Title |
Automatic Learning of Symbol Descriptions Avoiding Topological Ambiguities |
Type |
Miscellaneous |
| Year |
2006 |
Publication |
3rd Eurographics Workshop on Sketch Based Interfaces and Modeling (SBIM´06), 27–34 |
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Vienna (Austria) |
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Approved |
no |
| Call Number |
DAG @ dag @ MLS2006b |
Serial |
710 |
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| Author |
Joan Mas; Gemma Sanchez; Josep Llados |
| Title |
An Incremental Parser to Recognize Diagram Symbols and Gestures represented by Adjacency Grammars |
Type |
Book Whole |
| Year |
2006 |
Publication |
Graphics Recognition: Ten Years Review and Future Perspectives, W. Liu, J. Llados (Eds.), LNCS 3926: 252–263 |
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no |
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DAG @ dag @ MSL2006a |
Serial |
711 |
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| Author |
Oriol Ramos Terrades |
| Title |
Linear Combination of Multiresolution Descriptors: Application to Graphics Recognition |
Type |
Book Whole |
| Year |
2006 |
Publication |
PhD Thesis, Universitat Autonoma de Barcelona-CVC & Universite Nancy 2 |
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Ph.D. thesis |
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Editor |
Salvatore Antoine Tabbone;Ernest Valveny |
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DAG |
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no |
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DAG @ dag @ Ram2006 |
Serial |
713 |
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| Author |
Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados |
| Title |
Automatic Interpretation of Proofreading Sketches |
Type |
Miscellaneous |
| Year |
2006 |
Publication |
3rd Eurographics Workshop on Sketch Based Interfaces and Modeling (SBIM´06), 35–42 |
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Vienna (Austria) |
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DAG |
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no |
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DAG @ dag @ RSL2006a |
Serial |
716 |
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| Author |
Oriol Ramos Terrades; Salvatore Tabbone; Ernest Valveny |
| Title |
Combination of shape descriptors using an adaptation of boosting |
Type |
Miscellaneous |
| Year |
2006 |
Publication |
18th International Conference on Pattern Recognition (ICPR´06), 2: 764–767 |
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| Address |
Hong Kong |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ RTV2006 |
Serial |
718 |
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| Author |
Marçal Rusiñol; Josep Llados |
| Title |
Symbol Spotting in Technical Drawings Using Vectorial Signatures |
Type |
Book Chapter |
| Year |
2006 |
Publication |
Graphics Recognition: Ten Years Review and Future Perspectives, W. Liu, J. Llados (Eds.), LNCS 3926: 35–46 |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ RuL2006a |
Serial |
719 |
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| Author |
Josep Llados |
| Title |
Computer Vision: Progress of Research and Development |
Type |
Book Whole |
| Year |
2006 |
Publication |
1st CVC Internal Workshop Computer Vision: Progress of Research and Development, |
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J. Llados (ed.), |
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ISBN |
84-933652-8-9 |
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Conference |
CVCRD |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ Lla2006b |
Serial |
766 |
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| Author |
W. Liu; Josep Llados |
| Title |
Graphics Recognition. Ten Years Review and Future Perspectives |
Type |
Book Whole |
| Year |
2006 |
Publication |
6th International Workshop |
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| Volume |
3926 |
Issue |
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| Address |
Hong Kong (China) |
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LNCS |
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Conference |
GREC |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ LiL2006 |
Serial |
800 |
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| Author |
Ernest Valveny; Philippe Dosch; Adam Winstanley; Yu Zhou; Su Yang; Luo Yan; Liu Wenyin; Dave Elliman; Mathieu Nicolas Delalandre; Eric Trupin; Sebastien Adam; Jean-Marc Ogier |
| Title |
A general framework for the evaluation of symbol recognition methods |
Type |
Journal |
| Year |
2006 |
Publication |
International Journal on Document Analysis and Recognition (IJDAR), 9(1): 59–74 |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ VDW2006 |
Serial |
801 |
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| Author |
Paula Fritzsche; C.Roig; Ana Ripoll; Emilio Luque; Aura Hernandez-Sabate |
| Title |
A Performance Prediction Methodology for Data-dependent Parallel Applications |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proceedings of the IEEE International Conference on Cluster Computing |
Abbreviated Journal |
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Issue |
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Pages |
1-8 |
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| Abstract |
The increase in the use of parallel distributed architectures in order to solve large-scale scientific problems has generated the need for performance prediction for both deterministic applications and non-deterministic applications. In particular, the performance prediction of data dependent programs is an extremely challenging problem because for a specific issue the input datasets may cause different execution times. Generally, a parallel application is characterized as a collection of tasks and their interrelations. If the application is time-critical it is not enough to work with only one value per task, and consequently knowledge of the distribution of task execution times is crucial. The development of a new prediction methodology to estimate the performance of data-dependent parallel applications is the primary target of this study. This approach makes it possible to evaluate the parallel performance of an application without the need of implementation. A real data-dependent arterial structure detection application model is used to apply the methodology proposed. The predicted times obtained using the new methodology for genuine datasets are compared with predicted times that arise from using only one execution value per task. Finally, the experimental study shows that the new methodology generates more precise predictions. |
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IAM |
Approved |
no |
| Call Number |
IAM @ iam @ FRR2006 |
Serial |
1497 |
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| Author |
F.Guirado; Ana Ripoll; C.Roig; Aura Hernandez-Sabate; Emilio Luque |
| Title |
Exploiting Throughput for Pipeline Execution in Streaming Image Processing Applications |
Type |
Book Chapter |
| Year |
2006 |
Publication |
Euro-Par 2006 Parallel Processing |
Abbreviated Journal |
LNCS |
| Volume |
4128 |
Issue |
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Pages |
1095-1105 |
| Keywords |
12th International Euro–Par Conference |
| Abstract |
There is a large range of image processing applications that act on an input sequence of image frames that are continuously received. Throughput is a key performance measure to be optimized when execu- ting them. In this paper we propose a new task replication methodology for optimizing throughput for an image processing application in the field of medicine. The results show that by applying the proposed methodo- logy we are able to achieve the desired throughput in all cases, in such a way that the input frames can be processed at any given rate. |
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Springer-Verlag Berlin Heidelberg |
Place of Publication |
Dresden, Germany (European Union) |
Editor |
UAB; W, E.N.; et al. |
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Lecture Notes In Computer Science |
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Euro–Par |
| Notes |
IAM |
Approved |
no |
| Call Number |
IAM @ iam @ GRR2006a |
Serial |
1542 |
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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 |
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| 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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1047-8477 |
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IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ GCM2006 |
Serial |
1519 |
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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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IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ RGF2006 |
Serial |
1640 |
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| Author |
Aura Hernandez-Sabate; Petia Radeva; Antonio Tovar; Debora Gil |
| Title |
Vessel structures alignment by spectral analysis of ivus sequences |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proc. of CVII, MICCAI Workshop |
Abbreviated Journal |
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Issue |
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Pages |
39-36 |
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| Abstract |
Three-dimensional intravascular ultrasound (IVUS) allows to visualize and obtain volumetric measurements of coronary lesions through an exploration of the cross sections and longitudinal views of arteries. However, the visualization and subsequent morpho-geometric measurements in IVUS longitudinal cuts are subject to distortion caused by periodic image/vessel motion around the IVUS catheter. Usually, to overcome the image motion artifact ECG-gating and image-gated approaches are proposed, leading to slowing the pullback acquisition or disregarding part of IVUS data. In this paper, we argue that the image motion is due to 3-D vessel geometry as well as cardiac dynamics, and propose a dynamic model based on the tracking of an elliptical vessel approximation to recover the rigid transformation and align IVUS images without loosing any IVUS data. We report an extensive validation with synthetic simulated data and in vivo IVUS sequences of 30 patients achieving an average reduction of the image artifact of 97% in synthetic data and 79% in real-data. Our study shows that IVUS alignment improves longitudinal analysis of the IVUS data and is a necessary step towards accurate reconstruction and volumetric measurements of 3-D IVUS. |
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Copenhaguen (Denmark), |
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1st International Wokshop on Computer Vision for Intravascular and Intracardiac Imaging (CVII’06) |
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IAM; MILAB |
Approved |
no |
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IAM @ iam @ HRT2006 |
Serial |
1552 |
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| Author |
Aura Hernandez-Sabate; Debora Gil; J. Mauri; Petia Radeva |
| Title |
Reducing cardiac motion in IVUS sequences |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proceeding of Computers in Cardiology |
Abbreviated Journal |
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| Volume |
33 |
Issue |
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Pages |
685-688 |
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| Abstract |
Cardiac vessel displacement is a main artifact in IVUS sequences. It hinders visualization of the main structures in an appropriate orientation and alignment and affects extracting vessel measurements. In this paper, we present a novel approach for image sequence alignment based on spectral analysis, which removes rigid dynamics, preserving at the same time the vessel geometry. First, we suppress the translation by taking, for each frame, the center of mass of the image as origin of coordinates. In polar coordinates with such point as origin, the rotation appears as a horizontal displacement. The translation induces a phase shift in the Fourier coefficients of two consecutive polar images. We estimate the phase by adjusting a regression plane to the phases of the principal frequencies. Experiments show that the presented strategy suppress cardiac motion regardless of the acquisition device. 1. |
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IAM; MILAB |
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no |
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IAM @ iam @ HGM2006a |
Serial |
1554 |
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