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Author (up) A. Richichi; O. Fors; M.T. Merino; Xavier Otazu; J. Nuñez; A. Prades; U. Thiele; D. Perez-Ramirez; F.J. Montojo edit  openurl
  Title The Calar Alto lunar occultation program: update and new results Type Journal
  Year 2006 Publication Astronomy and Astrophysics (Section ’Stellar structure and evolution’), 445:1081–1088 Abbreviated Journal  
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  Notes CIC Approved no  
  Call Number CAT @ cat @ RFM2006a Serial 589  
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Author (up) Agata Lapedriza; David Masip; Jordi Vitria edit  openurl
  Title Face Verification using External Features Type Miscellaneous
  Year 2006 Publication 7th International Conference on Automatic Face and Gesture Recognition (FG´06), 132– 137 Abbreviated Journal  
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  Address Southampton (United Kingdom)  
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  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ LMV2006a Serial 707  
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Author (up) Agata Lapedriza; David Masip; Jordi Vitria edit  doi
openurl 
  Title On the Use of External Face Features for Identity Verification Type Journal
  Year 2006 Publication Journal of Multimedia, 1(4): 11–20 Abbreviated Journal  
  Volume 1 Issue 4 Pages 11-20  
  Keywords Face Verification, Computer Vision, Machine Learning  
  Abstract In general automatic face classification applications images are captured in natural environments. In these cases, the performance is affected by variations in facial images related to illumination, pose, occlusion or expressions. Most of the existing face classification systems use only the internal features information, composed by eyes, nose and mouth, since they are more difficult to imitate. Nevertheless, nowadays a lot of applications not related to security are developed, and in these cases the information located at head, chin or ears zones (external features) can be useful to improve the current accuracies. However, the lack of a natural alignment in these areas makes difficult to extract these features applying classic Bottom-Up methods. In this paper, we propose a complete scheme based on a Top-Down reconstruction algorithm to extract external features of face images. To test our system we have performed face verification experiments using public databases, given that identity verification is a general task that has many real life applications. We have considered images uniformly illuminated, images with occlusions and images with high local changes in the illumination, and the obtained results show that the information contributed by the external features can be useful for verification purposes, specially significant when faces are partially occluded.  
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  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ LMV2006b Serial 708  
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Author (up) Alicia Fornes; Josep Llados; Gemma Sanchez edit  openurl
  Title Primitive Segmentation in Old Handwritten Music Scores Type Book Chapter
  Year 2006 Publication Graphics Recognition: Ten Years Review and Future Perspectives, W. Liu, J. Llados (Eds.), LNCS 3926: 288–299 Abbreviated Journal  
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  Notes DAG Approved no  
  Call Number DAG @ dag @ FLS2006 Serial 697  
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Author (up) Angel Sappa edit  url
openurl 
  Title Unsupervised Contour Closure Algorithm for Range Image Edge-Based Segmentation Type Journal
  Year 2006 Publication IEEE Transactions on Image Processing, 15(2):377–384 Abbreviated Journal  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ Sap2006a Serial 637  
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Author (up) Angel Sappa edit  openurl
  Title Splitting up Panoramic Range Images into Compact 2½D Representations Type Journal
  Year 2006 Publication International Journal of Imaging Systems and Technology, 16(3): 85–91 Abbreviated Journal  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ Sap2006b Serial 721  
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Author (up) Angel Sappa; Boris X. Vintimilla edit  openurl
  Title Edge Point Linking by Means of Global and Local Schemes Type Conference Article
  Year 2006 Publication IEEE Int. Conf. on Signal-Image Technology and Internet-Based Systems, Hammamet, Tunisia, December 2006, pp. 551-560. Abbreviated Journal  
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  Address Hammamet (Tunisia)  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ SaV2006 Serial 722  
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Author (up) Angel Sappa; David Geronimo; Fadi Dornaika; Antonio Lopez edit   pdf
url  openurl
  Title On-board camera extrinsic parameter estimation Type Journal Article
  Year 2006 Publication Electronics Letters Abbreviated Journal EL  
  Volume 42 Issue 13 Pages 745–746  
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  Abstract An efficient technique for real-time estimation of camera extrinsic parameters is presented. It is intended to be used on on-board vision systems for driving assistance applications. The proposed technique is based on the use of a commercial stereo vision system that does not need any visual feature extraction.  
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  Publisher IEE Place of Publication Editor  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ SGD2006a Serial 655  
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Author (up) Angel Sappa; David Geronimo; Fadi Dornaika; Antonio Lopez edit   pdf
url  openurl
  Title Real Time Vehicle Pose Using On-Board Stereo Vision System Type Conference Article
  Year 2006 Publication International Conference on Image Analysis and Recognition Abbreviated Journal ICIAR  
  Volume Issue LNCS 4142 Pages 205–216  
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  Abstract This paper presents a robust technique for a real time estimation of both camera’s position and orientation—referred as pose. A commercial stereo vision system is used. Unlike previous approaches, it can be used either for urban or highway scenarios. The proposed technique consists of two stages. Initially, a compact 2D representation of the original 3D data points is computed. Then, a RANSAC based least squares approach is used for fitting a plane to the road. At the same time,
relative camera’s position and orientation are computed. The proposed technique is intended to be used on a driving assistance scheme for applications such as obstacle or pedestrian detection. Experimental results on urban environments with different road geometries are presented.		  
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  Call Number ADAS @ adas @ SGD2006b Serial 671  
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Author (up) Angel Sappa; Fadi Dornaika edit  url
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  Title An Edge-Based Approach to Motion Detection Type Book Chapter
  Year 2006 Publication 6th International Conference on Computational Science (ICCS´06), LNCS 3991:563–570 Abbreviated Journal  
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  Address Reading (United Kingdom)  
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  Notes ADAS Approved no  
  Call Number ADAS @ adas @ SaD2006 Serial 654  
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Author (up) Anonymous edit  openurl
  Title A Low Computational-Cost Method to Fuse IKONOS Images Using the Spectral Response Function of Its Sensors Type Journal
  Year 2006 Publication IEEE Transactions on Geoscience and Remote Sensing, 44(6): 1683–1691 Abbreviated Journal  
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  Notes Approved no  
  Call Number CAT @ cat @ GOF2006 Serial 650  
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Author (up) Anton Cervantes; Gemma Sanchez; Josep Llados; Agnes Borras; Ana Rodriguez edit   pdf
url  openurl
  Title Biometric Recognition Based on Line Shape Descriptors Type Book Chapter
  Year 2006 Publication Lecture Notes in Computer Science Abbreviated Journal  
  Volume 3926 Issue Pages 346–357,  
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  Abstract Abstract. In this paper we propose biometric descriptors inspired by shape signatures traditionally used in graphics recognition approaches. In particular several methods based on line shape descriptors used to iden- tify newborns from the biometric information of the ears are developed. The process steps are the following: image acquisition, ear segmentation, ear normalization, feature extraction and identification. Several shape signatures are defined from contour images. These are formulated in terms of zoning and contour crossings descriptors. Experimental results are presented to demonstrate the effectiveness of the used techniques.  
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  Notes DAG Approved no  
  Call Number DAG @ dag @ CSL2006 Serial 685  
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Author (up) Aura Hernandez-Sabate; Debora Gil; J. Mauri; Petia Radeva edit   pdf
openurl 
  Title Reducing cardiac motion in IVUS sequences Type Conference Article
  Year 2006 Publication Proceeding of Computers in Cardiology Abbreviated Journal  
  Volume 33 Issue Pages 685-688  
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  Abstract Cardiac vessel displacement is a main artifact in IVUS sequences. It hinders visualization of the main structures in an appropriate orientation and alignment and affects extracting vessel measurements. In this paper, we present a novel approach for image sequence alignment based on spectral analysis, which removes rigid dynamics, preserving at the same time the vessel geometry. First, we suppress the translation by taking, for each frame, the center of mass of the image as origin of coordinates. In polar coordinates with such point as origin, the rotation appears as a horizontal displacement. The translation induces a phase shift in the Fourier coefficients of two consecutive polar images. We estimate the phase by adjusting a regression plane to the phases of the principal frequencies. Experiments show that the presented strategy suppress cardiac motion regardless of the acquisition device. 1.  
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  Notes IAM; MILAB Approved no  
  Call Number IAM @ iam @ HGM2006a Serial 1554  
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Author (up) Aura Hernandez-Sabate; Petia Radeva; Antonio Tovar; Debora Gil edit   pdf
url  openurl
  Title Vessel structures alignment by spectral analysis of ivus sequences Type Conference Article
  Year 2006 Publication Proc. of CVII, MICCAI Workshop Abbreviated Journal  
  Volume Issue Pages 39-36  
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  Abstract Three-dimensional intravascular ultrasound (IVUS) allows to visualize and obtain volumetric measurements of coronary lesions through an exploration of the cross sections and longitudinal views of arteries. However, the visualization and subsequent morpho-geometric measurements in IVUS longitudinal cuts are subject to distortion caused by periodic image/vessel motion around the IVUS catheter. Usually, to overcome the image motion artifact ECG-gating and image-gated approaches are proposed, leading to slowing the pullback acquisition or disregarding part of IVUS data. In this paper, we argue that the image motion is due to 3-D vessel geometry as well as cardiac dynamics, and propose a dynamic model based on the tracking of an elliptical vessel approximation to recover the rigid transformation and align IVUS images without loosing any IVUS data. We report an extensive validation with synthetic simulated data and in vivo IVUS sequences of 30 patients achieving an average reduction of the image artifact of 97% in synthetic data and 79% in real-data. Our study shows that IVUS alignment improves longitudinal analysis of the IVUS data and is a necessary step towards accurate reconstruction and volumetric measurements of 3-D IVUS.  
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  Publisher Place of Publication Copenhaguen (Denmark), Editor  
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  Series Editor Series Title 1st International Wokshop on Computer Vision for Intravascular and Intracardiac Imaging (CVII’06) Abbreviated Series Title  
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  Notes IAM; MILAB Approved no  
  Call Number IAM @ iam @ HRT2006 Serial 1552  
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Author (up) Bogdan Raducanu; Jordi Vitria edit  openurl
  Title Aprendiendo a Aprender: de Maquinas Listas a Maquinas Inteligentes Type Miscellaneous
  Year 2006 Publication Campus Multidisciplinario en Percepcion e Inteligencia (Antionio Fernandez–Caballero et al., eds.), 1: 34–45 Abbreviated Journal  
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  Address Albacete (Spain)  
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  Notes OR;MV Approved no  
  Call Number BCNPCL @ bcnpcl @ RaV2006b Serial 714  
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