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Author | Ekain Artola | ||||
Title | Human Attention Map Prediction Combining Visual Features | Type | Report | ||
Year | 2010 | Publication | CVC Technical Report | Abbreviated Journal | |
Volume | 160 | Issue | Pages | ||
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Corporate Author | Thesis | Bachelor's thesis | |||
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Notes | Approved | no | |||
Call Number | Admin @ si @ Art2010 | Serial | 1352 | ||
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Author | David Fernandez | ||||
Title | Handwritten Word Spotting in Old Manuscript Images using Shape Descriptors | Type | Report | ||
Year | 2010 | Publication | CVC Technical Report | Abbreviated Journal | |
Volume | 161 | Issue | Pages | ||
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Corporate Author | Thesis | Master's thesis | |||
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Notes | DAG | Approved | no | ||
Call Number | Admin @ si @ Fer2010b | Serial | 1353 | ||
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Author | Jon Almazan | ||||
Title | Deforming the Blurred Shape Model for Shape Description and Recognition | Type | Report | ||
Year | 2010 | Publication | CVC Technical Report | Abbreviated Journal | |
Volume | 163 | Issue | Pages | ||
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Corporate Author | Thesis | Master's thesis | |||
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Notes | Approved | no | |||
Call Number | Admin @ si @ Alm2010 | Serial | 1354 | ||
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Author | Nataliya Shapovalova | ||||
Title | On Importance of Interaction and Context | Type | Report | ||
Year | 2010 | Publication | CVC Technical Report | Abbreviated Journal | |
Volume | 155 | Issue | Pages | ||
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Corporate Author | Thesis | Master's thesis | |||
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Notes | ISE | Approved | no | ||
Call Number | Admin @ si @ Sha2010 | Serial | 1355 | ||
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Author | Zhanwu Xiong | ||||
Title | A Pompd Model for Active Camera Control | Type | Report | ||
Year | 2010 | Publication | CVC Technical Report | Abbreviated Journal | |
Volume | 156 | Issue | Pages | ||
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Corporate Author | Thesis | Master's thesis | |||
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Notes | ISE | Approved | no | ||
Call Number | Admin @ si @ Xio2010 | Serial | 1356 | ||
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Author | Olivier Penacchio; C. Alejandro Parraga; Maria Vanrell | ||||
Title | Natural Scene Statistics account for Human Cones Ratios | Type | Journal Article | ||
Year | 2010 | Publication | Perception. ECVP Abstract Supplement | Abbreviated Journal | PER |
Volume | 39 | Issue | Pages | 101 | |
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Abstract | In two previous experiments [Parraga et al, 2009 J. of Im. Sci. and Tech 53(3) 031106; Benavente et al,2009 Perception 38 ECVP Supplement, 36] the boundaries of basic colour categories were measured.
In the first experiment, samples were presented in isolation (ie on a dark background) and boundaries were measured using a yes/no paradigm. In the second, subjects adjusted the chromaticity of a sample presented on a random Mondrian background to find the boundary between pairs of adjacent colours. Results from these experiments showed significant dierences but it was not possible to conclude whether this discrepancy was due to the absence/presence of a colourful background or to the dierences in the paradigms used. In this work, we settle this question by repeating the first experiment (ie samples presented on a dark background) using the second paradigm. A comparison of results shows that although boundary locations are very similar, boundaries measured in context are significantly dierent(more diuse) than those measured in isolation (confirmed by a Student’s t-test analysis on the subject’s answers statistical distributions). In addition, we completed the mapping of colour name space by measuring the boundaries between chromatic colours and the achromatic centre. With these results we completed our parametric fuzzy-sets model of colour naming space. |
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Notes | CIC | Approved | no | ||
Call Number | CAT @ cat @ PPV2010 | Serial | 1357 | ||
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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 | 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 | |
Volume | Issue | 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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Area | Expedition | Conference | SUEMA | ||
Notes | OR;MILAB;HUPBA;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ BBP2010 | Serial | 1363 | ||
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Author | Neus Salvatella; E Fernandez-Nofrerias; Francesco Ciompi; O. Rodriguez-Leor; Xavier Carrillo; R. Hemetsberger; Petia Radeva; Josefina Mauri; A. Bayes | ||||
Title | Canvis de volum a la arteria radial despres de la administracio de dos tractaments vasodilatadors. Avaluacio mitjançant ecografia intravascular | Type | Conference Article | ||
Year | 2010 | Publication | 22nd Congres Societat Catalana de Cardiologia, | Abbreviated Journal | |
Volume | Issue | Pages | 179 | ||
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Address | Barcelona (Spain) | ||||
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Notes | MILAB | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ SFC2010a | Serial | 1367 | ||
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Author | O. Rodriguez-Leor; R. Hemetsberger; Francesco Ciompi; E Fernandez-Nofrerias; Angel Serrano; M. Bernet; Petia Radeva; F. 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 | Conference Article | ||
Year | 2010 | Publication | 22nd Congres Societat Catalana de Cardiologia, | Abbreviated Journal | |
Volume | Issue | Pages | 131 | ||
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Address | Barcelona (Spain) | ||||
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Notes | MILAB | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ RHC2010 | Serial | 1368 | ||
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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 | Conference Article | ||
Year | 2012 | Publication | International Conference on Intelligent Robots and Systems | Abbreviated Journal | IROS |
Volume | Issue | 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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Area | Expedition | Conference | IROS | ||
Notes | ADAS | Approved | no | ||
Call Number | ADAS @ adas @ NRR2012 | Serial | 2378 | ||
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Author | Jose Carlos Rubio; Joan Serrat; Antonio Lopez; Daniel Ponsa | ||||
Title | Multiple-target tracking for the intelligent headlights control | Type | Conference Article | ||
Year | 2010 | Publication | 13th Annual International Conference on Intelligent Transportation Systems | Abbreviated Journal | |
Volume | Issue | Pages | 903–910 | ||
Keywords | Intelligent Headlights | ||||
Abstract | TA7.4
Intelligent vehicle lighting systems aim at automatically regulating the headlights' beam to illuminate as much of the road ahead as possible while avoiding dazzling other drivers. A key component of such a system is computer vision software that is able to distinguish blobs due to vehicles' headlights and rear lights from those due to road lamps and reflective elements such as poles and traffic signs. In a previous work, we have devised a set of specialized supervised classifiers to make such decisions based on blob features related to its intensity and shape. Despite the overall good performance, there remain challenging that have yet to be solved: notably, faint and tiny blobs corresponding to quite distant vehicles. In fact, for such distant blobs, classification decisions can be taken after observing them during a few frames. Hence, incorporating tracking could improve the overall lighting system performance by enforcing the temporal consistency of the classifier decision. Accordingly, this paper focuses on the problem of constructing blob tracks, which is actually one of multiple-target tracking (MTT), but under two special conditions: We have to deal with frequent occlusions, as well as blob splits and merges. We approach it in a novel way by formulating the problem as a maximum a posteriori inference on a Markov random field. The qualitative (in video form) and quantitative evaluation of our new MTT method shows good tracking results. In addition, we will also see that the classification performance of the problematic blobs improves due to the proposed MTT algorithm. |
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Address | Madeira Island (Portugal) | ||||
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Area | Expedition | Conference | ITSC | ||
Notes | ADAS | Approved | no | ||
Call Number | ADAS @ adas @ RSL2010 | Serial | 1422 | ||
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Author | Jaume Amores; David Geronimo; Antonio Lopez | ||||
Title | Multiple instance and active learning for weakly-supervised object-class segmentation | Type | Conference Article | ||
Year | 2010 | Publication | 3rd IEEE International Conference on Machine Vision | Abbreviated Journal | |
Volume | Issue | Pages | |||
Keywords | Multiple Instance Learning; Active Learning; Object-class segmentation. | ||||
Abstract | In object-class segmentation, one of the most tedious tasks is to manually segment many object examples in order to learn a model of the object category. Yet, there has been little research on reducing the degree of manual annotation for
object-class segmentation. In this work we explore alternative strategies which do not require full manual segmentation of the object in the training set. In particular, we study the use of bounding boxes as a coarser and much cheaper form of segmentation and we perform a comparative study of several Multiple-Instance Learning techniques that allow to obtain a model with this type of weak annotation. We show that some of these methods can be competitive, when used with coarse segmentations, with methods that require full manual segmentation of the objects. Furthermore, we show how to use active learning combined with this weakly supervised strategy. As we see, this strategy permits to reduce the amount of annotation and optimize the number of examples that require full manual segmentation in the training set. |
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Address | Hong-Kong | ||||
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Area | Expedition | Conference | ICMV | ||
Notes | ADAS | Approved | no | ||
Call Number | ADAS @ adas @ AGL2010b | Serial | 1429 | ||
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Author | Marçal Rusiñol; Josep Llados | ||||
Title | Efficient Logo Retrieval Through Hashing Shape Context Descriptors | Type | Conference Article | ||
Year | 2010 | Publication | 9th IAPR International Workshop on Document Analysis Systems | Abbreviated Journal | |
Volume | Issue | Pages | 215–222 | ||
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Abstract | In this paper, we present an approach towards the retrieval of words from graphical document images. In graphical documents, due to presence of multi-oriented characters in non-structured layout, word indexing is a challenging task. The proposed approach uses recognition results of individual components to form character pairs with the neighboring components. An indexing scheme is designed to store the spatial description of components and to access them efficiently. Given a query text word (ascii/unicode format), the character pairs present in it are searched in the document. Next the retrieved character pairs are linked sequentially to form character string. Dynamic programming is applied to find different instances of query words. A string edit distance is used here to match the query word as the objective function. Recognition of multi-scale and multi-oriented character component is done using Support Vector Machine classifier. To consider multi-oriented character strings the features used in the SVM are invariant to character orientation. Experimental results show that the method is efficient to locate a query word from multi-oriented text in graphical documents. | ||||
Address | Boston; USA | ||||
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Area | Expedition | Conference | DAS | ||
Notes | DAG | Approved | no | ||
Call Number | DAG @ dag @ RuL2010b | Serial | 1434 | ||
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Author | Herve Locteau; Sebastien Mace; Ernest Valveny; Salvatore Tabbone | ||||
Title | Extraction des pieces de un plan de habitation | Type | Conference Article | ||
Year | 2010 | Publication | Colloque Internacional Francophone de l´Ecrit et le Document | Abbreviated Journal | |
Volume | Issue | Pages | 1–12 | ||
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Abstract | In this article, a method to extract the rooms of an architectural floor plan image is described. We first present a line detection algorithm to extract long lines in the image. Those lines are analyzed to identify the existing walls. From this point, room extraction can be seen as a classical segmentation task for which each region corresponds to a room. The chosen resolution strategy consists in recursively decomposing the image until getting nearly convex regions. The notion of convexity is difficult to quantify, and the selection of separation lines can also be rough. Thus, we take advantage of knowledge associated to architectural floor plans in order to obtain mainly rectangular rooms. Preliminary tests on a set of real documents show promising results. | ||||
Address | Sousse, Tunisia | ||||
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Area | Expedition | Conference | CIFED | ||
Notes | DAG | Approved | no | ||
Call Number | DAG @ dag @ LMV2010 | Serial | 1440 | ||
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Author | Joan Mas; Gemma Sanchez; Josep Llados | ||||
Title | SSP: Sketching slide Presentations, a Syntactic Approach | Type | Conference Article | ||
Year | 2009 | Publication | 8th IAPR International Workshop on Graphics Recognition | Abbreviated Journal | |
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Abstract | The design of a slide presentation is a creative process. In this process first, humans visualize in their minds what they want to explain. Then, they have to be able to represent this knowledge in an understandable way. There exists a lot of commercial software that allows to create our own slide presentations but the creativity of the user is rather limited. In this article we present an application that allows the user to create and visualize a slide presentation from a sketch. A slide may be seen as a graphical document or a diagram where its elements are placed in a particular spatial arrangement. To describe and recognize slides a syntactic approach is proposed. This approach is based on an Adjacency Grammar and a parsing methodology to cope with this kind of grammars. The experimental evaluation shows the performance of our methodology from a qualitative and a quantitative point of view. Six different slides containing different number of symbols, from 4 to 7, have been given to the users and they have drawn them without restrictions in the order of the elements. The quantitative results give an idea on how suitable is our methodology to describe and recognize the different elements in a slide. | ||||
Address | La Rochelle; France; July 2009 | ||||
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Area | Expedition | Conference | GREC | ||
Notes | DAG | Approved | no | ||
Call Number | DAG @ dag @ MSL2009a | Serial | 1441 | ||
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