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Author Jose Manuel Alvarez; Antonio Lopez edit   pdf
doi  openurl
  Title Road Detection Based on Illuminant Invariance Type Journal Article
  Year 2011 Publication IEEE Transactions on Intelligent Transportation Systems Abbreviated Journal TITS  
  Volume 12 Issue 1 Pages 184-193  
  Keywords road detection  
  Abstract By using an onboard camera, it is possible to detect the free road surface ahead of the ego-vehicle. Road detection is of high relevance for autonomous driving, road departure warning, and supporting driver-assistance systems such as vehicle and pedestrian detection. The key for vision-based road detection is the ability to classify image pixels as belonging or not to the road surface. Identifying road pixels is a major challenge due to the intraclass variability caused by lighting conditions. A particularly difficult scenario appears when the road surface has both shadowed and nonshadowed areas. Accordingly, we propose a novel approach to vision-based road detection that is robust to shadows. The novelty of our approach relies on using a shadow-invariant feature space combined with a model-based classifier. The model is built online to improve the adaptability of the algorithm to the current lighting and the presence of other vehicles in the scene. The proposed algorithm works in still images and does not depend on either road shape or temporal restrictions. Quantitative and qualitative experiments on real-world road sequences with heavy traffic and shadows show that the method is robust to shadows and lighting variations. Moreover, the proposed method provides the highest performance when compared with hue-saturation-intensity (HSI)-based algorithms.  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ AlL2011 Serial 1456  
Permanent link to this record
 

 
Author Maria Elena Meza-de-Luna; Juan Ramon Terven Salinas; Bogdan Raducanu; Joaquin Salas edit   pdf
doi  openurl
  Title Assessing the Influence of Mirroring on the Perception of Professional Competence using Wearable Technology Type Journal Article
  Year 2016 Publication IEEE Transactions on Affective Computing Abbreviated Journal TAC  
  Volume 9 Issue 2 Pages 161-175  
  Keywords Mirroring; Nodding; Competence; Perception; Wearable Technology  
  Abstract Nonverbal communication is an intrinsic part in daily face-to-face meetings. A frequently observed behavior during social interactions is mirroring, in which one person tends to mimic the attitude of the counterpart. This paper shows that a computer vision system could be used to predict the perception of competence in dyadic interactions through the automatic detection of mirroring
events. To prove our hypothesis, we developed: (1) A social assistant for mirroring detection, using a wearable device which includes a video camera and (2) an automatic classifier for the perception of competence, using the number of nodding gestures and mirroring events as predictors. For our study, we used a mixed-method approach in an experimental design where 48 participants acting as customers interacted with a confederated psychologist. We found that the number of nods or mirroring events has a significant influence on the perception of competence. Our results suggest that: (1) Customer mirroring is a better predictor than psychologist mirroring; (2) the number of psychologist’s nods is a better predictor than the number of customer’s nods; (3) except for the psychologist mirroring, the computer vision algorithm we used worked about equally well whether it was acquiring images from wearable smartglasses or fixed cameras.
 
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  Notes LAMP; 600.072; Approved no  
  Call Number Admin @ si @ MTR2016 Serial 2826  
Permanent link to this record
 

 
Author Debora Gil; Aura Hernandez-Sabate; David Castells; Jordi Carrabina edit   pdf
doi  openurl
  Title CYBERH: Cyber-Physical Systems in Health for Personalized Assistance Type Conference Article
  Year 2017 Publication International Symposium on Symbolic and Numeric Algorithms for Scientific Computing Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract Assistance systems for e-Health applications have some specific requirements that demand of new methods for data gathering, analysis and modeling able to deal with SmallData:
1) systems should dynamically collect data from, both, the environment and the user to issue personalized recommendations; 2) data analysis should be able to tackle a limited number of samples prone to include non-informative data and possibly evolving in time due to changes in patient condition; 3) algorithms should run in real time with possibly limited computational resources and fluctuant internet access.
Electronic medical devices (and CyberPhysical devices in general) can enhance the process of data gathering and analysis in several ways: (i) acquiring simultaneously multiple sensors data instead of single magnitudes (ii) filtering data; (iii) providing real-time implementations condition by isolating tasks in individual processors of multiprocessors Systems-on-chip (MPSoC) platforms and (iv) combining information through sensor fusion
techniques.
Our approach focus on both aspects of the complementary role of CyberPhysical devices and analysis of SmallData in the process of personalized models building for e-Health applications. In particular, we will address the design of Cyber-Physical Systems in Health for Personalized Assistance (CyberHealth) in two specific application cases: 1) A Smart Assisted Driving System (SADs) for dynamical assessment of the driving capabilities of Mild Cognitive Impaired (MCI) people; 2) An Intelligent Operating Room (iOR) for improving the yield of bronchoscopic interventions for in-vivo lung cancer diagnosis.
 
  Address Timisoara; Rumania; September 2017  
  Corporate Author Thesis  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference SYNASC  
  Notes IAM; 600.085; 600.096; 600.075; 600.145 Approved no  
  Call Number Admin @ si @ GHC2017 Serial 3045  
Permanent link to this record
 

 
Author Xavier Soria; Angel Sappa; Arash Akbarinia edit   pdf
doi  openurl
  Title Multispectral Single-Sensor RGB-NIR Imaging: New Challenges and Opportunities Type Conference Article
  Year 2017 Publication 7th International Conference on Image Processing Theory, Tools & Applications Abbreviated Journal  
  Volume Issue Pages  
  Keywords Color restoration; Neural networks; Singlesensor cameras; Multispectral images; RGB-NIR dataset  
  Abstract Multispectral images captured with a single sensor camera have become an attractive alternative for numerous computer vision applications. However, in order to fully exploit their potentials, the color restoration problem (RGB representation) should be addressed. This problem is more evident in outdoor scenarios containing vegetation, living beings, or specular materials. The problem of color distortion emerges from the sensitivity of sensors due to the overlap of visible and near infrared spectral bands. This paper empirically evaluates the variability of the near infrared (NIR) information with respect to the changes of light throughout the day. A tiny neural network is proposed to restore the RGB color representation from the given RGBN (Red, Green, Blue, NIR) images. In order to evaluate the proposed algorithm, different experiments on a RGBN outdoor dataset are conducted, which include various challenging cases. The obtained result shows the challenge and the importance of addressing color restoration in single sensor multispectral images.  
  Address Montreal; Canada; November 2017  
  Corporate Author Thesis  
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  ISSN ISBN Medium  
  Area Expedition Conference IPTA  
  Notes NEUROBIT; MSIAU; 600.122 Approved no  
  Call Number Admin @ si @ SSA2017 Serial 3074  
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Author Sergio Escalera; Xavier Baro; Hugo Jair Escalante; Isabelle Guyon edit   pdf
doi  openurl
  Title ChaLearn Looking at People: A Review of Events and Resources Type Conference Article
  Year 2017 Publication 30th International Joint Conference on Neural Networks Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract This paper reviews the historic of ChaLearn Looking at People (LAP) events. We started in 2011 (with the release of the first Kinect device) to run challenges related to human action/activity and gesture recognition. Since then we have regularly organized events in a series of competitions covering all aspects of visual analysis of humans. So far we have organized more than 10 international challenges and events in this field. This paper reviews associated events, and introduces the ChaLearn LAP platform where public resources (including code, data and preprints of papers) related to the organized events are available. We also provide a discussion on perspectives of ChaLearn LAP activities.  
  Address Anchorage; Alaska; USA; May 2017  
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  ISSN ISBN Medium  
  Area Expedition Conference IJCNN  
  Notes HuPBA; 602.143 Approved no  
  Call Number Admin @ si @ EBE2017 Serial 3012  
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Author Gemma Rotger; Felipe Lumbreras; Francesc Moreno-Noguer; Antonio Agudo edit   pdf
doi  openurl
  Title 2D-to-3D Facial Expression Transfer Type Conference Article
  Year 2018 Publication 24th International Conference on Pattern Recognition Abbreviated Journal  
  Volume Issue Pages 2008 - 2013  
  Keywords  
  Abstract Automatically changing the expression and physical features of a face from an input image is a topic that has been traditionally tackled in a 2D domain. In this paper, we bring this problem to 3D and propose a framework that given an
input RGB video of a human face under a neutral expression, initially computes his/her 3D shape and then performs a transfer to a new and potentially non-observed expression. For this purpose, we parameterize the rest shape –obtained from standard factorization approaches over the input video– using a triangular
mesh which is further clustered into larger macro-segments. The expression transfer problem is then posed as a direct mapping between this shape and a source shape, such as the blend shapes of an off-the-shelf 3D dataset of human facial expressions. The mapping is resolved to be geometrically consistent between 3D models by requiring points in specific regions to map on semantic
equivalent regions. We validate the approach on several synthetic and real examples of input faces that largely differ from the source shapes, yielding very realistic expression transfers even in cases with topology changes, such as a synthetic video sequence of a single-eyed cyclops.
 
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  Area Expedition Conference ICPR  
  Notes MSIAU; 600.086; 600.130; 600.118 Approved no  
  Call Number Admin @ si @ RLM2018 Serial 3232  
Permanent link to this record
 

 
Author J.R. Serra; J.B. Subirana edit  doi
openurl 
  Title Perceptual Grouping on Texture Images Using Non-Cartesian Networks Type Conference Article
  Year 1996 Publication IEEE International Conference on Pattern Recognition. Vol B, pp. 462–466 Abbreviated Journal  
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  Notes Approved no  
  Call Number Admin @ si @ SeS1996a Serial 217  
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Author X. Binefa; Jordi Vitria edit  doi
openurl 
  Title A contrast based focusing criterium. Type Conference Article
  Year 1996 Publication IEEE International Conference on Pattern Recognition. Vol. A, pp. 805–809 Abbreviated Journal  
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  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ BiV1996 Serial 79  
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Author V. Valev; Petia Radeva edit  doi
openurl 
  Title A Method of Solving Pattern or image Recognition Problems by Learning Boolean Formulas. Type Conference Article
  Year 1992 Publication Proc. of 11th IAPR International Conference on Pattern Recognition Abbreviated Journal  
  Volume II Issue Pages 359-362  
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  Address The Hague, Netherlands  
  Corporate Author Thesis  
  Publisher IEEE Computer Society Press Place of Publication Editor  
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  Area Expedition Conference ICPR  
  Notes MILAB Approved no  
  Call Number BCNPCL @ bcnpcl @ VaR1992b Serial 253  
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Author Maedeh Aghaei; Mariella Dimiccoli; Petia Radeva edit   pdf
doi  openurl
  Title All the people around me: face clustering in egocentric photo streams Type Conference Article
  Year 2017 Publication 24th International Conference on Image Processing Abbreviated Journal  
  Volume Issue Pages  
  Keywords face discovery; face clustering; deepmatching; bag-of-tracklets; egocentric photo-streams  
  Abstract arxiv1703.01790
Given an unconstrained stream of images captured by a wearable photo-camera (2fpm), we propose an unsupervised bottom-up approach for automatic clustering appearing faces into the individual identities present in these data. The problem is challenging since images are acquired under real world conditions; hence the visible appearance of the people in the images undergoes intensive variations. Our proposed pipeline consists of first arranging the photo-stream into events, later, localizing the appearance of multiple people in them, and
finally, grouping various appearances of the same person across different events. Experimental results performed on a dataset acquired by wearing a photo-camera during one month, demonstrate the effectiveness of the proposed approach for the considered purpose.
 
  Address Beijing; China; September 2017  
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  ISSN ISBN Medium  
  Area Expedition Conference ICIP  
  Notes MILAB; no menciona Approved no  
  Call Number Admin @ si @ EDR2017 Serial 3025  
Permanent link to this record
 

 
Author Andrei Polzounov; Artsiom Ablavatski; Sergio Escalera; Shijian Lu; Jianfei Cai edit  doi
openurl 
  Title WordFences: Text Localization and Recognition Type Conference Article
  Year 2017 Publication 24th International Conference on Image Processing Abbreviated Journal  
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  Address Beijing; China; September 2017  
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  Area Expedition Conference ICIP  
  Notes HUPBA; no menciona Approved no  
  Call Number Admin @ si @ PAE2017 Serial 3007  
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Author Angel Sappa; Niki Aifanti; Sotiris Malassiotis; Michael G. Strintzis edit  doi
openurl 
  Title Monocular 3D Human Body Reconstruction Towards Depth Augmentation of Television Sequences Type Conference Article
  Year 2003 Publication IEEE International Conference on Image Processing, Barcelona, Spain, September 2003 Abbreviated Journal  
  Volume Issue Pages 325-328  
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  Address Barcelona  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ SAM2003 Serial 418  
Permanent link to this record
 

 
Author Debora Gil; Petia Radeva; Fernando Vilariño edit   pdf
doi  isbn
openurl 
  Title Anisotropic Contour Completion Type Conference Article
  Year 2003 Publication Proceedings of the IEEE International Conference on Image Processing Abbreviated Journal  
  Volume Issue Pages I-869  
  Keywords  
  Abstract In this paper we introduce a novel application of the diffusion tensor for anisotropic image processing. The Anisotropic Contour Completion (ACC) we suggest consists in extending the characteristic function of the open curve by means of a degenerated diffusion tensor that prevents any diffusion in the normal direction. We show that ACC is equivalent to a dilation with a continuous elliptic structural element that takes into account the local orientation of the contours to be closed. Experiments on contours extracted from real images show that ACC produces shapes able to adapt to any curve in an active contour framework. 1.  
  Address Barcelona, Spain  
  Corporate Author Thesis  
  Publisher Place of Publication Barcelona, Spain Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN 0-7803-7751-6 Medium  
  Area Expedition Conference ICIP  
  Notes IAM;MV;MILAB;SIAI Approved no  
  Call Number IAM @ iam @ GRV2003 Serial 1539  
Permanent link to this record
 

 
Author David Guillamet; B. Moghaddam; Jordi Vitria edit  doi
openurl 
  Title Higher-Order Dependencies in Local Appearance Models Type Conference Article
  Year 2003 Publication IEEE International Conference on Image Processing (ICIP) Abbreviated Journal  
  Volume Issue Pages  
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  Address Barcelona, Spain  
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  Area Expedition Conference ICIP  
  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ GMV2003b Serial 377  
Permanent link to this record
 

 
Author Xose M. Pardo; Petia Radeva; Juan J. Villanueva edit  doi
openurl 
  Title Self-Training Statistic Snake for Image Segmentation and Tracking. Type Miscellaneous
  Year 1999 Publication Proceedings 10th International Conference on Image Analysis and Processing Abbreviated Journal  
  Volume Issue Pages 406-411  
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  Abstract .  
  Address Venice  
  Corporate Author Thesis  
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  ISSN ISBN Medium  
  Area Expedition Conference ICIAP  
  Notes MILAB Approved no  
  Call Number BCNPCL @ bcnpcl @ PRV1999 Serial 26  
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