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Author B. Moghaddam; David Guillamet; Jordi Vitria edit  openurl
  Title , Local Appearance-Based Models using High-Order Statistics of Image Features Type Miscellaneous
  Year 2003 Publication (up) IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  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 OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ MGV2003 Serial 395  
Permanent link to this record
 

 
Author Ajian Liu; Jun Wan; Sergio Escalera; Hugo Jair Escalante; Zichang Tan; Qi Yuan; Kai Wang; Chi Lin; Guodong Guo; Isabelle Guyon; Stan Z. Li edit   pdf
openurl 
  Title Multi-Modal Face Anti-Spoofing Attack Detection Challenge at CVPR2019 Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision and Pattern Recognition-Workshop Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract Anti-spoofing attack detection is critical to guarantee the security of face-based authentication and facial analysis systems. Recently, a multi-modal face anti-spoofing dataset, CASIA-SURF, has been released with the goal of boosting research in this important topic. CASIA-SURF is the largest public data set for facial anti-spoofing attack detection in terms of both, diversity and modalities: it comprises 1,000 subjects and 21,000 video samples. We organized a challenge around this novel resource to boost research in the subject. The Chalearn LAP multi-modal face anti-spoofing attack detection challenge attracted more than 300 teams for the development phase with a total of 13 teams qualifying for the final round. This paper presents an overview of the challenge, including its design, evaluation protocol and a summary of results. We analyze the top ranked solutions and draw conclusions derived from the competition. In addition we outline future work directions.  
  Address California; June 2019  
  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 HuPBA; no proj Approved no  
  Call Number Admin @ si @ LWE2019 Serial 3329  
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Author Armin Mehri; Angel Sappa edit   pdf
url  openurl
  Title Colorizing Near Infrared Images through a Cyclic Adversarial Approach of Unpaired Samples Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision and Pattern Recognition-Workshops Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract This paper presents a novel approach for colorizing near infrared (NIR) images. The approach is based on image-to-image translation using a Cycle-Consistent adversarial network for learning the color channels on unpaired dataset. This architecture is able to handle unpaired datasets. The approach uses as generators tailored networks that require less computation times, converge faster and generate high quality samples. The obtained results have been quantitatively—using standard evaluation metrics—and qualitatively evaluated showing considerable improvements with respect to the state of the art  
  Address Long beach; California; USA; June 2019  
  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 MSIAU; 600.130; 601.349; 600.122 Approved no  
  Call Number Admin @ si @ MeS2019 Serial 3271  
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Author Patricia Suarez; Angel Sappa; Boris X. Vintimilla; Riad I. Hammoud edit   pdf
openurl 
  Title Image Vegetation Index through a Cycle Generative Adversarial Network Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision and Pattern Recognition-Workshops Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract This paper proposes a novel approach to estimate the Normalized Difference Vegetation Index (NDVI) just from an RGB image. The NDVI values are obtained by using images from the visible spectral band together with a synthetic near infrared image obtained by a cycled GAN. The cycled GAN network is able to obtain a NIR image from a given gray scale image. It is trained by using unpaired set of gray scale and NIR images by using a U-net architecture and a multiple loss function (gray scale images are obtained from the provided RGB images). Then, the NIR image estimated with the proposed cycle generative adversarial network is used to compute the NDVI index. Experimental results are provided showing the validity of the proposed approach. Additionally, comparisons with previous approaches are also provided.  
  Address Long beach; California; USA; June 2019  
  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 MSIAU; 600.130; 601.349; 600.122 Approved no  
  Call Number Admin @ si @ SSV2019 Serial 3272  
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Author Lichao Zhang; Martin Danelljan; Abel Gonzalez-Garcia; Joost Van de Weijer; Fahad Shahbaz Khan edit   pdf
url  doi
openurl 
  Title Multi-Modal Fusion for End-to-End RGB-T Tracking Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision Workshops Abbreviated Journal  
  Volume Issue Pages 2252-2261  
  Keywords  
  Abstract We propose an end-to-end tracking framework for fusing the RGB and TIR modalities in RGB-T tracking. Our baseline tracker is DiMP (Discriminative Model Prediction), which employs a carefully designed target prediction network trained end-to-end using a discriminative loss. We analyze the effectiveness of modality fusion in each of the main components in DiMP, i.e. feature extractor, target estimation network, and classifier. We consider several fusion mechanisms acting at different levels of the framework, including pixel-level, feature-level and response-level. Our tracker is trained in an end-to-end manner, enabling the components to learn how to fuse the information from both modalities. As data to train our model, we generate a large-scale RGB-T dataset by considering an annotated RGB tracking dataset (GOT-10k) and synthesizing paired TIR images using an image-to-image translation approach. We perform extensive experiments on VOT-RGBT2019 dataset and RGBT210 dataset, evaluating each type of modality fusing on each model component. The results show that the proposed fusion mechanisms improve the performance of the single modality counterparts. We obtain our best results when fusing at the feature-level on both the IoU-Net and the model predictor, obtaining an EAO score of 0.391 on VOT-RGBT2019 dataset. With this fusion mechanism we achieve the state-of-the-art performance on RGBT210 dataset.  
  Address Seul; Corea; October 2019  
  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 ICCVW  
  Notes LAMP; 600.109; 600.141; 600.120 Approved no  
  Call Number Admin @ si @ ZDG2019 Serial 3279  
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Author Javad Zolfaghari Bengar; Abel Gonzalez-Garcia; Gabriel Villalonga; Bogdan Raducanu; Hamed H. Aghdam; Mikhail Mozerov; Antonio Lopez; Joost Van de Weijer edit   pdf
url  doi
openurl 
  Title Temporal Coherence for Active Learning in Videos Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision Workshops Abbreviated Journal  
  Volume Issue Pages 914-923  
  Keywords  
  Abstract Autonomous driving systems require huge amounts of data to train. Manual annotation of this data is time-consuming and prohibitively expensive since it involves human resources. Therefore, active learning emerged as an alternative to ease this effort and to make data annotation more manageable. In this paper, we introduce a novel active learning approach for object detection in videos by exploiting temporal coherence. Our active learning criterion is based on the estimated number of errors in terms of false positives and false negatives. The detections obtained by the object detector are used to define the nodes of a graph and tracked forward and backward to temporally link the nodes. Minimizing an energy function defined on this graphical model provides estimates of both false positives and false negatives. Additionally, we introduce a synthetic video dataset, called SYNTHIA-AL, specially designed to evaluate active learning for video object detection in road scenes. Finally, we show that our approach outperforms active learning baselines tested on two datasets.  
  Address Seul; Corea; October 2019  
  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 ICCVW  
  Notes LAMP; ADAS; 600.124; 602.200; 600.118; 600.120; 600.141 Approved no  
  Call Number Admin @ si @ ZGV2019 Serial 3294  
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Author Mohammed Al Rawi; Ernest Valveny edit   pdf
url  doi
openurl 
  Title Compact and Efficient Multitask Learning in Vision, Language and Speech Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision Workshops Abbreviated Journal  
  Volume Issue Pages 2933-2942  
  Keywords  
  Abstract Across-domain multitask learning is a challenging area of computer vision and machine learning due to the intra-similarities among class distributions. Addressing this problem to cope with the human cognition system by considering inter and intra-class categorization and recognition complicates the problem even further. We propose in this work an effective holistic and hierarchical learning by using a text embedding layer on top of a deep learning model. We also propose a novel sensory discriminator approach to resolve the collisions between different tasks and domains. We then train the model concurrently on textual sentiment analysis, speech recognition, image classification, action recognition from video, and handwriting word spotting of two different scripts (Arabic and English). The model we propose successfully learned different tasks across multiple domains.  
  Address Seul; Korea; October 2019  
  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 ICCVW  
  Notes DAG; 600.121; 600.129 Approved no  
  Call Number Admin @ si @ RaV2019 Serial 3365  
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Author Alejandro Cartas; Jordi Luque; Petia Radeva; Carlos Segura; Mariella Dimiccoli edit  url
doi  openurl
  Title Seeing and Hearing Egocentric Actions: How Much Can We Learn? Type Conference Article
  Year 2019 Publication (up) IEEE International Conference on Computer Vision Workshops Abbreviated Journal  
  Volume Issue Pages 4470-4480  
  Keywords  
  Abstract Our interaction with the world is an inherently multimodal experience. However, the understanding of human-to-object interactions has historically been addressed focusing on a single modality. In particular, a limited number of works have considered to integrate the visual and audio modalities for this purpose. In this work, we propose a multimodal approach for egocentric action recognition in a kitchen environment that relies on audio and visual information. Our model combines a sparse temporal sampling strategy with a late fusion of audio, spatial, and temporal streams. Experimental results on the EPIC-Kitchens dataset show that multimodal integration leads to better performance than unimodal approaches. In particular, we achieved a 5.18% improvement over the state of the art on verb classification.  
  Address Seul; Korea; October 2019  
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  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference ICCVW  
  Notes MILAB; no proj Approved no  
  Call Number Admin @ si @ CLR2019b Serial 3385  
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Author Carme Julia; Angel Sappa; Felipe Lumbreras; Joan Serrat; Antonio Lopez edit   pdf
openurl 
  Title An Adapted Alternation Approach for Recommender Systems Type Conference Article
  Year 2008 Publication (up) IEEE International Conference on e–Business Engineering, Abbreviated Journal  
  Volume Issue Pages 128–135  
  Keywords  
  Abstract This paper presents an adaptation of the alternation technique to tackle the prediction task in recommender systems. These systems are widely considered in electronic commerce to help customers to find products they will probably like or dislike. As the SVD-based approaches, the proposed adapted alternation technique uses all the information stored in the system to find the predictions. The main advantage of this technique with respect to the SVD-based ones is that it can deal with missing data. Furthermore, it has a smaller computational cost. Experimental results with public data sets are provided in order to show the viability of the proposed adapted alternation approach.  
  Address Xi’an (Xina)  
  Corporate Author Thesis  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ JSL2008e Serial 1044  
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Author Laura Lopez-Fuentes; Sebastia Massanet; Manuel Gonzalez-Hidalgo edit  doi
openurl 
  Title Image vignetting reduction via a maximization of fuzzy entropy Type Conference Article
  Year 2017 Publication (up) IEEE International Conference on Fuzzy Systems Abbreviated Journal  
  Volume Issue Pages  
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  Abstract In many computer vision applications, vignetting is an undesirable effect which must be removed in a pre-processing step. Recently, an algorithm for image vignetting correction has been presented by means of a minimization of log-intensity entropy. This method relies on an increase of the entropy of the image when it is affected with vignetting. In this paper, we propose a novel algorithm to reduce image vignetting via a maximization of the fuzzy entropy of the image. Fuzzy entropy quantifies the fuzziness degree of a fuzzy set and its value is also modified by the presence of vignetting. The experimental results show that this novel algorithm outperforms in most cases the algorithm based on the minimization of log-intensity entropy both from the qualitative and the quantitative point of view.  
  Address Napoles; Italia; July 2017  
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  ISSN ISBN Medium  
  Area Expedition Conference FUZZ-IEEE  
  Notes LAMP; 600.120 Approved no  
  Call Number Admin @ si @ LMG2017 Serial 2972  
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Author Angel Sappa; Niki Aifanti; Sotiris Malassiotis; Michael G. Strintzis edit  openurl
  Title 3D Gait Estimation from Monoscopic Video Type Miscellaneous
  Year 2004 Publication (up) IEEE International Conference on Image Processing Abbreviated Journal  
  Volume Issue Pages  
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  Abstract  
  Address Singapore  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
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  Area Expedition Conference  
  Notes ADAS Approved no  
  Call Number ADAS @ adas @ SAM2004c Serial 495  
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Author A. Pujol; Juan J. Villanueva; Jose Luis Alba edit  openurl
  Title Efficient Computation of Face Shape Similarity Using Distance Transform Eigendecomposition and Valleys. Type Miscellaneous
  Year 2001 Publication (up) IEEE International Conference on Image Processing (ICIP 2001), 1:1030–1033 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Grecia  
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  Notes Approved no  
  Call Number ISE @ ise @ PVA2001 Serial 203  
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Author David Guillamet; B. Moghaddam; Jordi Vitria edit  openurl
  Title Higher-Order Dependencies in Local Appearance Models Type Miscellaneous
  Year 2003 Publication (up) IEEE International Conference on Image Processing (ICIP) Abbreviated Journal  
  Volume Issue Pages  
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  Abstract  
  Address  
  Corporate Author Thesis  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ GMV2003b Serial 377  
Permanent link to this record
 

 
Author Carme Julia; Angel Sappa; Felipe Lumbreras; Joan Serrat edit  openurl
  Title Photometric Stereo through and Adapted Alternation Approach Type Conference Article
  Year 2008 Publication (up) IEEE International Conference on Image Processing, Abbreviated Journal  
  Volume Issue Pages 1500–1503  
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  Abstract  
  Address San Diego; CA; USA  
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  Publisher Place of Publication Editor  
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  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes ADAS Approved no  
  Call Number ADAS @ adas @ JSL2008d Serial 1016  
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Author Angel Sappa; Niki Aifanti; Sotiris Malassiotis; Michael G. Strintzis edit  openurl
  Title Monocular 3D Human Body Reconstruction Towards Depth Augmentation of Television Sequences Type Conference Article
  Year 2003 Publication (up) IEEE International Conference on Image Processing, Barcelona, Spain, September 2003 Abbreviated Journal  
  Volume Issue Pages 325-328  
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  Abstract  
  Address Barcelona  
  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 @ SAM2003 Serial 418  
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