Records |
Author |
Jaume Garcia; Petia Radeva; Francesc Carreras |
Title |
Combining Spectral and Active Shape methods to Track Tagged MRI |
Type |
Book Chapter |
Year |
2004 |
Publication |
Recent Advances in Artificial Intelligence Research and Development |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
37-44 |
Keywords |
MR; tagged MR; ASM; LV segmentation; motion estimation. |
Abstract |
Tagged magnetic resonance is a very usefull and unique tool that provides a complete local and global knowledge of the left ventricle (LV) motion. In this article we introduce a method capable of tracking and segmenting the LV. Spectral methods are applied in order to obtain the so called HARP images which encode information about movement and are the base for LV point-tracking. For segmentation we use Active Shapes (ASM) that model LV shape variation in order to overcome possible local misplacements of the boundary. We finally show experiments on both synthetic and real data which appear to be very promising. |
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IOS Press |
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Conference |
CCIA |
Notes |
IAM;MILAB |
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no |
Call Number |
IAM @ iam @ GRC2004 |
Serial |
1488 |
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Author |
Debora Gil; Petia Radeva |
Title |
Inhibition of False Landmarks |
Type |
Book Chapter |
Year |
2004 |
Publication |
Recent Advances in Artificial Intelligence Research and Development |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
233-244 |
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Abstract |
We argue that a corner detector should be based on the degree of continuity of the tangent vector to the image level sets, work on the image domain and need no assumptions on neither the image local structure nor the particular geometry of the corner/junction. An operator measuring the degree of differentiability of the projection matrix on the image gradient fulfills the above requirements. Its high sensitivity to changes in vector directions makes it suitable for landmark location in real images prone to need smoothing to reduce the impact of noise. Because using smoothing kernels leads to corner misplacement, we suggest an alternative fake response remover based on the receptive field inhibition of spurious details. The combination of both orientation discontinuity detection and noise inhibition produce our Inhibition Orientation Energy (IOE) landmark locator. |
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Publisher |
IOS Press |
Place of Publication |
Barcelona (Spain) |
Editor |
al, J.V. et |
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Notes |
IAM;MILAB |
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no |
Call Number |
IAM @ iam @ GiR2004a |
Serial |
1533 |
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Author |
Enric Marti; Jordi Regincos; Juan Jose Villanueva; Jaime Lopez-Krahe |
Title |
Line drawing interpretation as polyhedral objects to man-machine interaction in CAD systems |
Type |
Book Chapter |
Year |
1994 |
Publication |
Advances in Pattern Recognition and Image Analysis, |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
158-169 |
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Publisher |
World Scientific Pub. |
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ISBN |
981-02-1872-9 |
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IAM;ISE |
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no |
Call Number |
IAM @ iam @ MRL1994 |
Serial |
1609 |
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Author |
Aura Hernandez-Sabate; Debora Gil |
Title |
The Benefits of IVUS Dynamics for Retrieving Stable Models of Arteries |
Type |
Book Chapter |
Year |
2012 |
Publication |
Intravascular Ultrasound |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
185-206 |
Keywords |
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Abstract |
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Publisher |
Intech |
Place of Publication |
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Editor |
Yasuhiro Honda |
Language |
English |
Summary Language |
english |
Original Title |
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Edition |
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ISBN |
978-953-307-900-4 |
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Notes |
IAM; ADAS |
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no |
Call Number |
IAM @ iam @ HeG2012 |
Serial |
1684 |
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Author |
Salvatore Tabbone; Oriol Ramos Terrades |
Title |
An Overview of Symbol Recognition |
Type |
Book Chapter |
Year |
2014 |
Publication |
Handbook of Document Image Processing and Recognition |
Abbreviated Journal |
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Volume |
D |
Issue |
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Pages |
523-551 |
Keywords |
Pattern recognition; Shape descriptors; Structural descriptors; Symbolrecognition; Symbol spotting |
Abstract |
According to the Cambridge Dictionaries Online, a symbol is a sign, shape, or object that is used to represent something else. Symbol recognition is a subfield of general pattern recognition problems that focuses on identifying, detecting, and recognizing symbols in technical drawings, maps, or miscellaneous documents such as logos and musical scores. This chapter aims at providing the reader an overview of the different existing ways of describing and recognizing symbols and how the field has evolved to attain a certain degree of maturity. |
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Publisher |
Springer London |
Place of Publication |
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Editor |
D. Doermann; K. Tombre |
Language |
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Edition |
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ISBN |
978-0-85729-858-4 |
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Conference |
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Notes |
DAG; 600.077 |
Approved |
no |
Call Number |
Admin @ si @ TaT2014 |
Serial |
2489 |
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Author |
Fadi Dornaika; Bogdan Raducanu |
Title |
Subtle Facial Expression Recognition in Still Images and Videos |
Type |
Book Chapter |
Year |
2011 |
Publication |
Advances in Face Image Analysis: Techniques and Technologies |
Abbreviated Journal |
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Volume |
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Issue |
14 |
Pages |
259-277 |
Keywords |
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Abstract |
This chapter addresses the recognition of basic facial expressions. It has three main contributions. First, the authors introduce a view- and texture independent schemes that exploits facial action parameters estimated by an appearance-based 3D face tracker. they represent the learned facial actions associated with different facial expressions by time series. Two dynamic recognition schemes are proposed: (1) the first is based on conditional predictive models and on an analysis-synthesis scheme, and (2) the second is based on examples allowing straightforward use of machine learning approaches. Second, the authors propose an efficient recognition scheme based on the detection of keyframes in videos. Third, the authors compare the dynamic scheme with a static one based on analyzing individual snapshots and show that in general the former performs better than the latter. The authors then provide evaluations of performance using Linear Discriminant Analysis (LDA), Non parametric Discriminant Analysis (NDA), and Support Vector Machines (SVM). |
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Publisher |
IGI-Global |
Place of Publication |
New York, USA |
Editor |
Yu-Jin Zhang |
Language |
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Summary Language |
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Original Title |
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Series Editor |
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Edition |
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ISSN |
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ISBN |
978-1-6152-0991-0 |
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Conference |
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Notes |
OR;MV |
Approved |
no |
Call Number |
Admin @ si @ DoR2011 |
Serial |
1751 |
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Author |
Nataliya Shapovalova; Carles Fernandez; Xavier Roca; Jordi Gonzalez |
Title |
Semantics of Human Behavior in Image Sequences |
Type |
Book Chapter |
Year |
2011 |
Publication |
Computer Analysis of Human Behavior |
Abbreviated Journal |
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Volume |
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Issue |
7 |
Pages |
151-182 |
Keywords |
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Abstract |
Human behavior is contextualized and understanding the scene of an action is crucial for giving proper semantics to behavior. In this chapter we present a novel approach for scene understanding. The emphasis of this work is on the particular case of Human Event Understanding. We introduce a new taxonomy to organize the different semantic levels of the Human Event Understanding framework proposed. Such a framework particularly contributes to the scene understanding domain by (i) extracting behavioral patterns from the integrative analysis of spatial, temporal, and contextual evidence and (ii) integrative analysis of bottom-up and top-down approaches in Human Event Understanding. We will explore how the information about interactions between humans and their environment influences the performance of activity recognition, and how this can be extrapolated to the temporal domain in order to extract higher inferences from human events observed in sequences of images. |
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Publisher |
Springer London |
Place of Publication |
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Editor |
Albert Ali Salah; |
Language |
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Summary Language |
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Edition |
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ISBN |
978-0-85729-993-2 |
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Notes |
ISE |
Approved |
no |
Call Number |
Admin @ si @ SFR2011 |
Serial |
1810 |
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Author |
Murad Al Haj; Carles Fernandez; Zhanwu Xiong; Ivan Huerta; Jordi Gonzalez; Xavier Roca |
Title |
Beyond the Static Camera: Issues and Trends in Active Vision |
Type |
Book Chapter |
Year |
2011 |
Publication |
Visual Analysis of Humans: Looking at People |
Abbreviated Journal |
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Volume |
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Issue |
2 |
Pages |
11-30 |
Keywords |
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Abstract |
Maximizing both the area coverage and the resolution per target is highly desirable in many applications of computer vision. However, with a limited number of cameras viewing a scene, the two objectives are contradictory. This chapter is dedicated to active vision systems, trying to achieve a trade-off between these two aims and examining the use of high-level reasoning in such scenarios. The chapter starts by introducing different approaches to active cameras configurations. Later, a single active camera system to track a moving object is developed, offering the reader first-hand understanding of the issues involved. Another section discusses practical considerations in building an active vision platform, taking as an example a multi-camera system developed for a European project. The last section of the chapter reflects upon the future trends of using semantic factors to drive smartly coordinated active systems. |
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Corporate Author |
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Publisher |
Springer London |
Place of Publication |
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Editor |
Th.B. Moeslund; A. Hilton; V. Krüger; L. Sigal |
Language |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Series Volume |
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Edition |
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ISSN |
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ISBN |
978-0-85729-996-3 |
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Notes |
ISE |
Approved |
no |
Call Number |
Admin @ si @ AFX2011 |
Serial |
1814 |
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Author |
Alicia Fornes; Josep Llados; Gemma Sanchez; Horst Bunke |
Title |
Writer Identification in Old Handwritten Music Scores |
Type |
Book Chapter |
Year |
2012 |
Publication |
Pattern Recognition and Signal Processing in Archaeometry: Mathematical and Computational Solutions for Archaeology |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
27-63 |
Keywords |
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Abstract |
The aim of writer identification is determining the writer of a piece of handwriting from a set of writers. In this paper we present a system for writer identification in old handwritten music scores. Even though an important amount of compositions contains handwritten text in the music scores, the aim of our work is to use only music notation to determine the author. The steps of the system proposed are the following. First of all, the music sheet is preprocessed and normalized for obtaining a single binarized music line, without the staff lines. Afterwards, 100 features are extracted for every music line, which are subsequently used in a k-NN classifier that compares every feature vector with prototypes stored in a database. By applying feature selection and extraction methods on the original feature set, the performance is increased. The proposed method has been tested on a database of old music scores from the 17th to 19th centuries, achieving a recognition rate of about 95%. |
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Corporate Author |
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Thesis |
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Publisher |
IGI-Global |
Place of Publication |
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Editor |
Copnstantin Papaodysseus |
Language |
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Summary Language |
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Original Title |
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Series Editor |
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Notes |
DAG |
Approved |
no |
Call Number |
Admin @ si @ FLS2012 |
Serial |
1828 |
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Author |
Muhammad Muzzamil Luqman; Jean-Yves Ramel; Josep Llados |
Title |
Multilevel Analysis of Attributed Graphs for Explicit Graph Embedding in Vector Spaces |
Type |
Book Chapter |
Year |
2013 |
Publication |
Graph Embedding for Pattern Analysis |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1-26 |
Keywords |
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Abstract |
Ability to recognize patterns is among the most crucial capabilities of human beings for their survival, which enables them to employ their sophisticated neural and cognitive systems [1], for processing complex audio, visual, smell, touch, and taste signals. Man is the most complex and the best existing system of pattern recognition. Without any explicit thinking, we continuously compare, classify, and identify huge amount of signal data everyday [2], starting from the time we get up in the morning till the last second we fall asleep. This includes recognizing the face of a friend in a crowd, a spoken word embedded in noise, the proper key to lock the door, smell of coffee, the voice of a favorite singer, the recognition of alphabetic characters, and millions of more tasks that we perform on regular basis. |
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Publisher |
Springer New York |
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Series Editor |
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Series Title |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
978-1-4614-4456-5 |
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Notes |
DAG |
Approved |
no |
Call Number |
Admin @ si @ LRL2013b |
Serial |
2271 |
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Author |
Joost Van de Weijer; Robert Benavente; Maria Vanrell; Cordelia Schmid; Ramon Baldrich; Jacob Verbeek; Diane Larlus |
Title |
Color Naming |
Type |
Book Chapter |
Year |
2012 |
Publication |
Color in Computer Vision: Fundamentals and Applications |
Abbreviated Journal |
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Volume |
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Issue |
17 |
Pages |
287-317 |
Keywords |
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Abstract |
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Address |
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Publisher |
John Wiley & Sons, Ltd. |
Place of Publication |
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Editor |
Theo Gevers;Arjan Gijsenij;Joost Van de Weijer;Jan-Mark Geusebroek |
Language |
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Original Title |
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Series Editor |
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Notes |
CIC |
Approved |
no |
Call Number |
Admin @ si @ WBV2012 |
Serial |
2063 |
Permanent link to this record |
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Author |
Xavier Perez Sala; Laura Igual; Sergio Escalera; Cecilio Angulo |
Title |
Uniform Sampling of Rotations for Discrete and Continuous Learning of 2D Shape Models |
Type |
Book Chapter |
Year |
2012 |
Publication |
Vision Robotics: Technologies for Machine Learning and Vision Applications |
Abbreviated Journal |
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Volume |
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Issue |
2 |
Pages |
23-42 |
Keywords |
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Abstract |
Different methodologies of uniform sampling over the rotation group, SO(3), for building unbiased 2D shape models from 3D objects are introduced and reviewed in this chapter. State-of-the-art non uniform sampling approaches are discussed, and uniform sampling methods using Euler angles and quaternions are introduced. Moreover, since presented work is oriented to model building applications, it is not limited to general discrete methods to obtain uniform 3D rotations, but also from a continuous point of view in the case of Procrustes Analysis. |
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Publisher |
IGI-Global |
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Notes |
MILAB;HuPBA |
Approved |
no |
Call Number |
Admin @ si @ PIE2012 |
Serial |
2064 |
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Author |
Laura Igual; Joan Carles Soliva; Antonio Hernandez; Sergio Escalera; Oscar Vilarroya; Petia Radeva |
Title |
A Supervised Graph-cut Deformable Model for Brain MRI Segmentation. Deformation models: tracking, animation and applications |
Type |
Book Chapter |
Year |
2012 |
Publication |
Computational Vision and Biomechanics |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Abstract |
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Publisher |
Springer Netherlands |
Place of Publication |
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Editor |
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Series Editor |
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Series Title |
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LNCS |
Series Volume |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
978-94-007-5445-4 |
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Notes |
MILAB;HuPBA |
Approved |
no |
Call Number |
Admin @ si @ ISH2012b |
Serial |
2066 |
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Author |
Cristhian Aguilera; M.Ramos; Angel Sappa |
Title |
Simulated Annealing: A Novel Application of Image Processing in the Wood Area |
Type |
Book Chapter |
Year |
2012 |
Publication |
Simulated Annealing – Advances, Applications and Hybridizations |
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Volume |
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Issue |
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Pages |
91-104 |
Keywords |
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Publisher |
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Editor |
Marcos de Sales Guerra Tsuzuki |
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Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
978-953-51-0710-1 |
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Notes |
ADAS |
Approved |
no |
Call Number |
Admin @ si @ ARS2012 |
Serial |
2156 |
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Author |
Fadi Dornaika; Bogdan Raducanu |
Title |
Analysis and Recognition of Facial Expressions in Videos Using Facial Shape Deformation |
Type |
Book Chapter |
Year |
2012 |
Publication |
Facial Expressions: Dynamic Patterns, Impairments and Social Perceptions |
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Volume |
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Issue |
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Pages |
157-178 |
Keywords |
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Abstract |
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Publisher |
NOVA Publishers |
Place of Publication |
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Editor |
S.E. Carter |
Language |
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Medium |
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Conference |
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Notes |
OR;MV |
Approved |
no |
Call Number |
Admin @ si @ DoR2012 |
Serial |
2183 |
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