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Author David Vazquez; Jiaolong Xu; Sebastian Ramos; Antonio Lopez; Daniel Ponsa edit   pdf
doi  openurl
  Title Weakly Supervised Automatic Annotation of Pedestrian Bounding Boxes Type Conference Article
  Year 2013 Publication (up) CVPR Workshop on Ground Truth – What is a good dataset? Abbreviated Journal  
  Volume Issue Pages 706 - 711  
  Keywords Pedestrian Detection; Domain Adaptation  
  Abstract Among the components of a pedestrian detector, its trained pedestrian classifier is crucial for achieving the desired performance. The initial task of the training process consists in collecting samples of pedestrians and background, which involves tiresome manual annotation of pedestrian bounding boxes (BBs). Thus, recent works have assessed the use of automatically collected samples from photo-realistic virtual worlds. However, learning from virtual-world samples and testing in real-world images may suffer the dataset shift problem. Accordingly, in this paper we assess an strategy to collect samples from the real world and retrain with them, thus avoiding the dataset shift, but in such a way that no BBs of real-world pedestrians have to be provided. In particular, we train a pedestrian classifier based on virtual-world samples (no human annotation required). Then, using such a classifier we collect pedestrian samples from real-world images by detection. After, a human oracle rejects the false detections efficiently (weak annotation). Finally, a new classifier is trained with the accepted detections. We show that this classifier is competitive with respect to the counterpart trained with samples collected by manually annotating hundreds of pedestrian BBs.  
  Address Portland; Oregon; June 2013  
  Corporate Author Thesis  
  Publisher IEEE Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference CVPRW  
  Notes ADAS; 600.054; 600.057; 601.217 Approved no  
  Call Number ADAS @ adas @ VXR2013a Serial 2219  
Permanent link to this record
 

 
Author Jiaolong Xu; David Vazquez; Sebastian Ramos; Antonio Lopez; Daniel Ponsa edit   pdf
doi  openurl
  Title Adapting a Pedestrian Detector by Boosting LDA Exemplar Classifiers Type Conference Article
  Year 2013 Publication (up) CVPR Workshop on Ground Truth – What is a good dataset? Abbreviated Journal  
  Volume Issue Pages 688 - 693  
  Keywords Pedestrian Detection; Domain Adaptation  
  Abstract Training vision-based pedestrian detectors using synthetic datasets (virtual world) is a useful technique to collect automatically the training examples with their pixel-wise ground truth. However, as it is often the case, these detectors must operate in real-world images, experiencing a significant drop of their performance. In fact, this effect also occurs among different real-world datasets, i.e. detectors' accuracy drops when the training data (source domain) and the application scenario (target domain) have inherent differences. Therefore, in order to avoid this problem, it is required to adapt the detector trained with synthetic data to operate in the real-world scenario. In this paper, we propose a domain adaptation approach based on boosting LDA exemplar classifiers from both virtual and real worlds. We evaluate our proposal on multiple real-world pedestrian detection datasets. The results show that our method can efficiently adapt the exemplar classifiers from virtual to real world, avoiding drops in average precision over the 15%.  
  Address Portland; oregon; June 2013  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference CVPRW  
  Notes ADAS; 600.054; 600.057; 601.217 Approved yes  
  Call Number XVR2013; ADAS @ adas @ xvr2013a Serial 2220  
Permanent link to this record
 

 
Author Antonio Lopez; David Lloret; Joan Serrat edit   pdf
openurl 
  Title Creaseness measures for CT and MR image registration. Type Miscellaneous
  Year 1998 Publication (up) CVPR’98 , IEEE Computer Society, pgs.694–699 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract Creases are a type of ridge/valley structures that can be characterized by local conditions. Therefore, creaseness refers to local ridgeness and valleyness. The curvature K of the level curves and the mean curvature kM of the level surfaces are good measures of creaseness for 2-d and 3-d images, respectively. However, the way they are computed gives rise to discontinuities, reducing their usefulness in many applications. We propose a new creaseness measure, based on these curvatures, that avoids the discontinuities. We demonstrate its usefulness in the registration of CT and MR brain volumes, from the same patient, by searching the maximum in the correlation of their creaseness responses (ridgeness from the CT and valleyness from the MR). Due to the high dimensionality of the space of transforms, the search is performed by a hierarchical approach combined with an optimization method at each level of the hierarchy  
  Address Santa Barbara, USA.  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes ADAS Approved no  
  Call Number ADAS @ adas @ LLS1998a Serial 11  
Permanent link to this record
 

 
Author M. Bressan; David Guillamet; Jordi Vitria edit  openurl
  Title Multiclass Object Recognition using Class-Conditional Independent Component Analisis Type Journal
  Year 2004 Publication (up) Cybernetics and Systems, 35/1:35–61 (IF: 0.768) Abbreviated Journal  
  Volume Issue Pages  
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  Abstract  
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  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ BGV2004 Serial 442  
Permanent link to this record
 

 
Author Josep Llados; Horst Bunke; Enric Marti edit  openurl
  Title Using cyclic string matching to find rotational and reflectional symmetric shapes Type Conference Article
  Year 1996 Publication (up) Dagstuhl Seminar on Modelling and Planning for Sensor–based Intelligent Robot Systems Abbreviated Journal  
  Volume Issue Pages  
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  Publisher World Scientific Place of Publication Saarbrucken (Germany). Editor R.C. Bolles, H.B.H.N.  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG;IAM Approved no  
  Call Number IAM @ iam @ LBM1996 Serial 1564  
Permanent link to this record
 

 
Author Jaime Moreno; Xavier Otazu edit  openurl
  Title Image coder based on Hilbert scanning of embedded quadTrees Type Conference Article
  Year 2011 Publication (up) Data Compression Conference Abbreviated Journal  
  Volume Issue Pages 470-470  
  Keywords  
  Abstract In this work we present an effective and computationally simple algorithm for image compression based on Hilbert Scanning of Embedded quadTrees (Hi-SET). It allows to represent an image as an embedded bitstream along a fractal function. Embedding is an important feature of modern image compression algorithms, in this way Salomon in [1, pg. 614] cite that another feature and perhaps a unique one is the fact of achieving the best quality for the number of bits input by the decoder at any point during the decoding. Hi-SET possesses also this latter feature. Furthermore, the coder is based on a quadtree partition strategy, that applied to image transformation structures such as discrete cosine or wavelet transform allows to obtain an energy clustering both in frequency and space. The coding algorithm is composed of three general steps, using just a list of significant pixels.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference DCC  
  Notes CIC Approved no  
  Call Number Admin @ si @ MoO2011b Serial 2177  
Permanent link to this record
 

 
Author Laura Lopez-Fuentes; Claudio Rossi; Harald Skinnemoen edit   pdf
doi  openurl
  Title River segmentation for flood monitoring Type Conference Article
  Year 2017 Publication (up) Data Science for Emergency Management at Big Data 2017 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract Floods are major natural disasters which cause deaths and material damages every year. Monitoring these events is crucial in order to reduce both the affected people and the economic losses. In this work we train and test three different Deep Learning segmentation algorithms to estimate the water area from river images, and compare their performances. We discuss the implementation of a novel data chain aimed to monitor river water levels by automatically process data collected from surveillance cameras, and to give alerts in case of high increases of the water level or flooding. We also create and openly publish the first image dataset for river water segmentation.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes LAMP; 600.084; 600.120 Approved no  
  Call Number Admin @ si @ LRS2017 Serial 3078  
Permanent link to this record
 

 
Author Santiago Segui; Oriol Pujol; Jordi Vitria edit  url
doi  openurl
  Title Learning to count with deep object features Type Conference Article
  Year 2015 Publication (up) Deep Vision: Deep Learning in Computer Vision, CVPR 2015 Workshop Abbreviated Journal  
  Volume Issue Pages 90-96  
  Keywords  
  Abstract Learning to count is a learning strategy that has been recently proposed in the literature for dealing with problems where estimating the number of object instances in a scene is the final objective. In this framework, the task of learning to detect and localize individual object instances is seen as a harder task that can be evaded by casting the problem as that of computing a regression value from hand-crafted image features. In this paper we explore the features that are learned when training a counting convolutional neural
network in order to understand their underlying representation.
To this end we define a counting problem for MNIST data and show that the internal representation of the network is able to classify digits in spite of the fact that no direct supervision was provided for them during training.
We also present preliminary results about a deep network that is able to count the number of pedestrians in a scene.
 
  Address Boston; USA; June 2015  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference CVPRW  
  Notes MILAB; HuPBA; OR;MV Approved no  
  Call Number Admin @ si @ SPV2015 Serial 2636  
Permanent link to this record
 

 
Author Enric Marti; J. Rocarias; Petia Radeva; H. Tizon; Jordi Vitria edit  openurl
  Title Caronte. Un gestor documental para asignaturas de universidad en el EEES Type Miscellaneous
  Year 2007 Publication (up) Desarrollo de gestion de grupos, encuestas y autoevaluacion, MoodleMoot 2007 Abbreviated Journal  
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  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes IAM;OR;MILAB;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ MRR2007b Serial 1128  
Permanent link to this record
 

 
Author Pau Baiget; Carles Fernandez; Xavier Roca; Jordi Gonzalez edit   pdf
doi  isbn
openurl 
  Title Trajectory-Based Abnormality Categorization for Learning Route Patterns in Surveillance Type Book Chapter
  Year 2012 Publication (up) Detection and Identification of Rare Audiovisual Cues, Studies in Computational Intelligence Abbreviated Journal  
  Volume 384 Issue 3 Pages 87-95  
  Keywords  
  Abstract The recognition of abnormal behaviors in video sequences has raised as a hot topic in video understanding research. Particularly, an important challenge resides on automatically detecting abnormality. However, there is no convention about the types of anomalies that training data should derive. In surveillance, these are typically detected when new observations differ substantially from observed, previously learned behavior models, which represent normality. This paper focuses on properly defining anomalies within trajectory analysis: we propose a hierarchical representation conformed by Soft, Intermediate, and Hard Anomaly, which are identified from the extent and nature of deviation from learned models. Towards this end, a novel Gaussian Mixture Model representation of learned route patterns creates a probabilistic map of the image plane, which is applied to detect and classify anomalies in real-time. Our method overcomes limitations of similar existing approaches, and performs correctly even when the tracking is affected by different sources of noise. The reliability of our approach is demonstrated experimentally.  
  Address  
  Corporate Author Thesis  
  Publisher Springer Berlin Heidelberg Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1860-949X ISBN 978-3-642-24033-1 Medium  
  Area Expedition Conference  
  Notes ISE Approved no  
  Call Number Admin @ si @ BFR2012 Serial 2062  
Permanent link to this record
 

 
Author Alicia Fornes; Josep Llados; Joan Mas; Joana Maria Pujadas-Mora; Anna Cabre edit   pdf
doi  isbn
openurl 
  Title A Bimodal Crowdsourcing Platform for Demographic Historical Manuscripts Type Conference Article
  Year 2014 Publication (up) Digital Access to Textual Cultural Heritage Conference Abbreviated Journal  
  Volume Issue Pages 103-108  
  Keywords  
  Abstract In this paper we present a crowdsourcing web-based application for extracting information from demographic handwritten document images. The proposed application integrates two points of view: the semantic information for demographic research, and the ground-truthing for document analysis research. Concretely, the application has the contents view, where the information is recorded into forms, and the labeling view, with the word labels for evaluating document analysis techniques. The crowdsourcing architecture allows to accelerate the information extraction (many users can work simultaneously), validate the information, and easily provide feedback to the users. We finally show how the proposed application can be extended to other kind of demographic historical manuscripts.  
  Address Madrid; May 2014  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN 978-1-4503-2588-2 Medium  
  Area Expedition Conference DATeCH  
  Notes DAG; 600.061; 602.006; 600.077 Approved no  
  Call Number Admin @ si @ FLM2014 Serial 2516  
Permanent link to this record
 

 
Author Josep Llados edit  url
openurl 
  Title Advances in Graphics Recognition Type Book Chapter
  Year 2007 Publication (up) Digital Document Processing, Major Directions and Recent Advances, Advances in Pattern Recognition, B.B. Chaudhuri, ed., 281–304 Abbreviated Journal  
  Volume Issue Pages  
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  Abstract  
  Address Springer London  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number DAG @ dag @ Lla2007 Serial 780  
Permanent link to this record
 

 
Author Oriol Vicente; Alicia Fornes; Ramon Valdes edit   pdf
openurl 
  Title The Digital Humanities Network of the UABCie: a smart structure of research and social transference for the digital humanities Type Conference Article
  Year 2016 Publication (up) Digital Humanities Centres: Experiences and Perspectives Abbreviated Journal  
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  Address Warsaw; Poland; December 2016  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference DHLABS  
  Notes DAG; 600.097 Approved no  
  Call Number Admin @ si @ VFV2016 Serial 2908  
Permanent link to this record
 

 
Author Alicia Fornes; Beata Megyesi; Joan Mas edit   pdf
openurl 
  Title Transcription of Encoded Manuscripts with Image Processing Techniques Type Conference Article
  Year 2017 Publication (up) Digital Humanities Conference Abbreviated Journal  
  Volume Issue Pages 441-443  
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  ISSN ISBN Medium  
  Area Expedition Conference DH  
  Notes DAG; 600.097; 600.121 Approved no  
  Call Number Admin @ si @ FMM2017 Serial 3061  
Permanent link to this record
 

 
Author Agnes Borras edit  openurl
  Title High-Level Clothes Description Based on Colour-Texture Features. Type Miscellaneous
  Year 2002 Publication (up) Director: J. Llados, Master Thesis. Abbreviated Journal  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number DAG @ dag @ Bor2002 Serial 322  
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