Records |
Author |
Fahad Shahbaz Khan; Joost Van de Weijer; Maria Vanrell |
Title |
Who Painted this Painting? |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
Proceedings of The CREATE 2010 Conference |
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Volume |
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Issue |
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Pages |
329–333 |
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Gjovik (Norway) |
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CREATE |
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CIC |
Approved |
no |
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CAT @ cat @ KWV2010 |
Serial |
1329 |
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Author |
Shida Beigpour; Joost Van de Weijer |
Title |
Photo-Realistic Color Alteration for Architecture and Design |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
Proceedings of The CREATE 2010 Conference |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
84–88 |
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Abstract |
As color is a strong stimuli we receive from the exterior world, choosing the right color can prove crucial in creating the desired architecture and desing. We propose a framework to apply a realistic color change on both objects and their illuminant lights for snapshots of architectural designs, in order to visualize and choose the right color before actully applying the change in the real world. The proposed framework is based on the laws of physics in order to accomplish realistic and physically plausible results. |
Address |
Gjovik (Norway) |
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CREATE |
Notes |
CIC |
Approved |
no |
Call Number |
CAT @ cat @ BeW2010 |
Serial |
1330 |
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Author |
Naveen Onkarappa; Angel Sappa |
Title |
On-Board Monocular Vision System Pose Estimation through a Dense Optical Flow |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
7th International Conference on Image Analysis and Recognition |
Abbreviated Journal |
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Volume |
6111 |
Issue |
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Pages |
230-239 |
Keywords |
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Abstract |
This paper presents a robust technique for estimating on-board monocular vision system pose. The proposed approach is based on a dense optical flow that is robust against shadows, reflections and illumination changes. A RANSAC based scheme is used to cope with the outliers in the optical flow. The proposed technique is intended to be used in driver assistance systems for applications such as obstacle or pedestrian detection. Experimental results on different scenarios, both from synthetic and real sequences, shows usefulness of the proposed approach. |
Address |
Povoa de Varzim (Portugal) |
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Springer Berlin Heidelberg |
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LNCS |
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Edition |
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ISSN |
0302-9743 |
ISBN |
978-3-642-13771-6 |
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Conference |
ICIAR |
Notes |
ADAS |
Approved |
no |
Call Number |
ADAS @ adas @ OnS2010 |
Serial |
1342 |
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Author |
Fernando Barrera; Felipe Lumbreras; Angel Sappa |
Title |
Multimodal Template Matching based on Gradient and Mutual Information using Scale-Space |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
17th IEEE International Conference on Image Processing |
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Volume |
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Issue |
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Pages |
2749–2752 |
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Abstract |
This paper presents the combined use of gradient and mutual information for infrared and intensity templates matching. We propose to joint: (i) feature matching in a multiresolution context and (ii) information propagation through scale-space representations. Our method consists in combining mutual information with a shape descriptor based on gradient, and propagate them following a coarse-to-fine strategy. The main contributions of this work are: to offer a theoretical formulation towards a multimodal stereo matching; to show that gradient and mutual information can be reinforced while they are propagated between consecutive levels; and to show that they are valid cost functions in multimodal template matchings. Comparisons are presented showing the improvements and viability of the proposed approach. |
Address |
Hong-Kong |
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Edition |
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ISSN |
1522-4880 |
ISBN |
978-1-4244-7992-4 |
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Conference |
ICIP |
Notes |
ADAS |
Approved |
no |
Call Number |
ADAS @ adas @ BLS2010 |
Serial |
1358 |
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Author |
Mohammad Rouhani; Angel Sappa |
Title |
A Fast accurate Implicit Polynomial Fitting Approach |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
17th IEEE International Conference on Image Processing |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1429–1432 |
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Abstract |
This paper presents a novel hybrid approach that combines state of the art fitting algorithms: algebraic-based and geometric-based. It consists of two steps; first, the 3L algorithm is used as an initialization and then, the obtained result, is improved through a geometric approach. The adopted geometric approach is based on a distance estimation that avoids costly search for the real orthogonal distance. Experimental results are presented as well as quantitative comparisons. |
Address |
Hong-Kong |
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1522-4880 |
ISBN |
978-1-4244-7992-4 |
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ICIP |
Notes |
ADAS |
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no |
Call Number |
ADAS @ adas @ RoS2010b |
Serial |
1359 |
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Author |
Fadi Dornaika; Bogdan Raducanu |
Title |
Person-specific face shape estimation under varying head pose from single snapshots |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
20th International Conference on Pattern Recognition |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
3496–3499 |
Keywords |
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Abstract |
This paper presents a new method for person-specific face shape estimation under varying head pose of a previously unseen person from a single image. We describe a featureless approach based on a deformable 3D model and a learned face subspace. The proposed approach is based on maximizing a likelihood measure associated with a learned face subspace, which is carried out by a stochastic and genetic optimizer. We conducted the experiments on a subset of Honda Video Database showing the feasibility and robustness of the proposed approach. For this reason, our approach could lend itself nicely to complex frameworks involving 3D face tracking and face gesture recognition in monocular videos. |
Address |
Istanbul, Turkey |
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ISSN |
1051-4651 |
ISBN |
978-1-4244-7542-1 |
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Conference |
ICPR |
Notes |
OR;MV |
Approved |
no |
Call Number |
BCNPCL @ bcnpcl @ DoR2010b |
Serial |
1361 |
Permanent link to this record |
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Author |
Antonio Hernandez; Miguel Reyes; Sergio Escalera; Petia Radeva |
Title |
Spatio-Temporal GrabCut human segmentation for face and pose recovery |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
IEEE International Workshop on Analysis and Modeling of Faces and Gestures |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
33–40 |
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Abstract |
In this paper, we present a full-automatic Spatio-Temporal GrabCut human segmentation methodology. GrabCut initialization is performed by a HOG-based subject detection, face detection, and skin color model for seed initialization. Spatial information is included by means of Mean Shift clustering whereas temporal coherence is considered by the historical of Gaussian Mixture Models. Moreover, human segmentation is combined with Shape and Active Appearance Models to perform full face and pose recovery. Results over public data sets as well as proper human action base show a robust segmentation and recovery of both face and pose using the presented methodology. |
Address |
San Francisco; CA; USA; June 2010 |
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ISSN |
2160-7508 |
ISBN |
978-1-4244-7029-7 |
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Conference |
AMFG |
Notes |
MILAB;HUPBA |
Approved |
no |
Call Number |
BCNPCL @ bcnpcl @ HRE2010 |
Serial |
1362 |
Permanent link to this record |
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Author |
Miguel Angel Bautista; Xavier Baro; Oriol Pujol; Petia Radeva; Jordi Vitria; Sergio Escalera |
Title |
Compact Evolutive Design of Error-Correcting Output Codes |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
Supervised and Unsupervised Ensemble Methods and their Applications in the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
119-128 |
Keywords |
Ensemble of Dichotomizers; Error-Correcting Output Codes; Evolutionary optimization |
Abstract |
The classication of large number of object categories is a challenging trend in the Machine Learning eld. In literature, this is often addressed using an ensemble of classiers. In this scope, the Error-Correcting Output Codes framework has demonstrated to be a powerful tool for the combination of classiers. However, most of the state-of-the-art ECOC approaches use a linear or exponential number of classiers, making the discrimination of a large number of classes unfeasible. In this paper, we explore and propose a minimal design of ECOC in terms of the number of classiers. Evolutionary computation is used for tuning the parameters of the classiers and looking for the best Minimal ECOC code conguration. The results over several public UCI data sets and a challenging multi-class Computer Vision problem show that the proposed methodology obtains comparable and even better results than state-of-the-art ECOC methodologies with far less number of dichotomizers. |
Address |
Barcelona (Spain) |
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Conference |
SUEMA |
Notes |
OR;MILAB;HUPBA;MV |
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no |
Call Number |
BCNPCL @ bcnpcl @ BBP2010 |
Serial |
1363 |
Permanent link to this record |
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Author |
Francesco Ciompi; Oriol Pujol; Petia Radeva |
Title |
A meta-learning approach to Conditional Random Fields using Error-Correcting Output Codes |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
20th International Conference on Pattern Recognition |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
710–713 |
Keywords |
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Abstract |
We present a meta-learning framework for the design of potential functions for Conditional Random Fields. The design of both node potential and edge potential is formulated as a classification problem where margin classifiers are used. The set of state transitions for the edge potential is treated as a set of different classes, thus defining a multi-class learning problem. The Error-Correcting Output Codes (ECOC) technique is used to deal with the multi-class problem. Furthermore, the point defined by the combination of margin classifiers in the ECOC space is interpreted in a probabilistic manner, and the obtained distance values are then converted into potential values. The proposed model exhibits very promising results when applied to two real detection problems. |
Address |
Istanbul;Turkey |
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Edition |
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ISSN |
1051-4651 |
ISBN |
978-1-4244-7542-1 |
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Conference |
ICPR |
Notes |
MILAB;HUPBA |
Approved |
no |
Call Number |
BCNPCL @ bcnpcl @ CPR2010a |
Serial |
1365 |
Permanent link to this record |
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Author |
Jose Seabra; F. Javier Sanchez; Francesco Ciompi; Petia Radeva |
Title |
Ultrasonographic Plaque Characterization using a Rayleigh Mixture Model |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
7th IEEE International Symposium on Biomedical Imaging |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1–4 |
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Abstract |
From Nano to Macro
A correct modelling of tissue morphology is determinant for the identification of vulnerable plaques. This paper aims at describing the plaque composition by means of a Rayleigh Mixture Model applied to ultrasonic data. The effectiveness of using a mixture of distributions is established through synthetic and real ultrasonic data samples. Furthermore, the proposed mixture model is used in a plaque classification problem in Intravascular Ultrasound (IVUS) images of coronary plaques. A classifier tested on a set of 67 in-vitro plaques, yields an overall accuracy of 86% and sensitivity of 92%, 94% and 82%, for fibrotic, calcified and lipidic tissues, respectively. These results strongly suggest that different plaques types can be distinguished by means of the coefficients and Rayleigh parameters of the mixture distribution. |
Address |
Rotterdam (Netherlands) |
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Edition |
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ISSN |
1945-7928 |
ISBN |
978-1-4244-4125-9 |
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ISBI |
Notes |
MILAB |
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no |
Call Number |
BCNPCL @ bcnpcl @ SSC2010 |
Serial |
1366 |
Permanent link to this record |
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Author |
Neus Salvatella; E Fernandez-Nofrerias; Francesco Ciompi; Oriol Rodriguez-Leor; Xavier Carrillo; R. Hemetsberger; Petia Radeva; J. Mauri; A. Bayes |
Title |
Canvis de volum a la arteria radial despres de la administracio de dos tractaments vasodilatadors. Avaluacio mitjançant ecografia intravascular |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
22nd Congres Societat Catalana de Cardiologia, |
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Volume |
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Issue |
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Pages |
179 |
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Address |
Barcelona (Spain) |
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MILAB |
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no |
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BCNPCL @ bcnpcl @ SFC2010a |
Serial |
1367 |
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Author |
Oriol Rodriguez-Leor; R. Hemetsberger; Francesco Ciompi; E Fernandez-Nofrerias; Angel Serrano; M. Bernet; Petia Radeva; J. Mauri; A. Bayes |
Title |
Caracteritzacio automatica de la placa mitjançant analisis del espectre de radiofreqüencia en estudi de ecografia intracoronaria: resultat de la fusio de dades invivo i exvivo |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
22nd Congres Societat Catalana de Cardiologia, |
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Volume |
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Issue |
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Pages |
131 |
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Abstract |
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Address |
Barcelona (Spain) |
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MILAB |
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no |
Call Number |
BCNPCL @ bcnpcl @ RHC2010 |
Serial |
1368 |
Permanent link to this record |
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Author |
R. de Nijs; Sebastian Ramos; Gemma Roig; Xavier Boix; Luc Van Gool; K. Kühnlenz. |
Title |
On-line Semantic Perception Using Uncertainty |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2012 |
Publication |
International Conference on Intelligent Robots and Systems |
Abbreviated Journal |
IROS |
Volume |
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Issue |
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Pages |
4185-4191 |
Keywords |
Semantic Segmentation |
Abstract |
Visual perception capabilities are still highly unreliable in unconstrained settings, and solutions might not beaccurate in all regions of an image. Awareness of the uncertainty of perception is a fundamental requirement for proper high level decision making in a robotic system. Yet, the uncertainty measure is often sacrificed to account for dependencies between object/region classifiers. This is the case of Conditional Random Fields (CRFs), the success of which stems from their ability to infer the most likely world configuration, but they do not directly allow to estimate the uncertainty of the solution. In this paper, we consider the setting of assigning semantic labels to the pixels of an image sequence. Instead of using a CRF, we employ a Perturb-and-MAP Random Field, a recently introduced probabilistic model that allows performing fast approximate sampling from its probability density function. This allows to effectively compute the uncertainty of the solution, indicating the reliability of the most likely labeling in each region of the image. We report results on the CamVid dataset, a standard benchmark for semantic labeling of urban image sequences. In our experiments, we show the benefits of exploiting the uncertainty by putting more computational effort on the regions of the image that are less reliable, and use more efficient techniques for other regions, showing little decrease of performance |
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IROS |
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ADAS |
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no |
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ADAS @ adas @ NRR2012 |
Serial |
2378 |
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Author |
David Augusto Rojas; Fahad Shahbaz Khan; Joost Van de Weijer |
Title |
The Impact of Color on Bag-of-Words based Object Recognition |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
20th International Conference on Pattern Recognition |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1549–1553 |
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Abstract |
In recent years several works have aimed at exploiting color information in order to improve the bag-of-words based image representation. There are two stages in which color information can be applied in the bag-of-words framework. Firstly, feature detection can be improved by choosing highly informative color-based regions. Secondly, feature description, typically focusing on shape, can be improved with a color description of the local patches. Although both approaches have been shown to improve results the combined merits have not yet been analyzed. Therefore, in this paper we investigate the combined contribution of color to both the feature detection and extraction stages. Experiments performed on two challenging data sets, namely Flower and Pascal VOC 2009; clearly demonstrate that incorporating color in both feature detection and extraction significantly improves the overall performance. |
Address |
Istanbul (Turkey) |
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Edition |
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ISSN |
1051-4651 |
ISBN |
978-1-4244-7542-1 |
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Conference |
ICPR |
Notes |
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Approved |
no |
Call Number |
CAT @ cat @ RKW2010 |
Serial |
1415 |
Permanent link to this record |
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Author |
Jaume Gibert; Ernest Valveny |
Title |
Graph Embedding based on Nodes Attributes Representatives and a Graph of Words Representation. |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Conference Article |
Year |
2010 |
Publication |
13th International worshop on structural and syntactic pattern recognition and 8th international worshop on statistical pattern recognition |
Abbreviated Journal |
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Volume |
6218 |
Issue |
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Pages |
223–232 |
Keywords |
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Abstract |
Although graph embedding has recently been used to extend statistical pattern recognition techniques to the graph domain, some existing embeddings are usually computationally expensive as they rely on classical graph-based operations. In this paper we present a new way to embed graphs into vector spaces by first encapsulating the information stored in the original graph under another graph representation by clustering the attributes of the graphs to be processed. This new representation makes the association of graphs to vectors an easy step by just arranging both node attributes and the adjacency matrix in the form of vectors. To test our method, we use two different databases of graphs whose nodes attributes are of different nature. A comparison with a reference method permits to show that this new embedding is better in terms of classification rates, while being much more faster. |
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Publisher |
Springer Berlin Heidelberg |
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Editor |
In E.R. Hancock, R.C. Wilson, T. Windeatt, I. Ulusoy and F. Escolano, |
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LNCS |
Series Volume |
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Series Issue |
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Edition |
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ISSN |
0302-9743 |
ISBN |
978-3-642-14979-5 |
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Conference |
S+SSPR |
Notes |
DAG |
Approved |
no |
Call Number |
DAG @ dag @ GiV2010 |
Serial |
1416 |
Permanent link to this record |