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Author  |
Nataliya Shapovalova |
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Title |
On Importance of Interaction and Context |
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Report |
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2010 |
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CVC Technical Report |
Abbreviated Journal |
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155 |
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ISE |
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no |
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Admin @ si @ Sha2010 |
Serial |
1355 |
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Author |
Noha Elfiky |
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Title |
Enhancing Local Binary Patterns with Spatial Pyramid Kernel: Application to Scene Classification |
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Report |
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Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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129 |
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Computer Vision Center |
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Master's thesis |
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Bellaterra, Barcelona |
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ISE |
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no |
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Admin @ si @ Elf2009 |
Serial |
2388 |
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Author |
Nuria Cirera |
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Title |
Recognition of Handwritten Historical Documents |
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Report |
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Year |
2012 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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Volume |
174 |
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DAG |
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no |
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Admin @ si @ Cir2012 |
Serial |
2416 |
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Author |
Ognjen Rudovic; Jordi Gonzalez |
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Title |
Building Temporal Templates for Human Behaviour Classification |
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Report |
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Year |
2008 |
Publication |
CVC Technical Report #127 |
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Barcelona, Spain |
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no |
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ISE @ ise @ RuG 2008 |
Serial |
1147 |
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Author |
Ole Larsen; Petia Radeva; Enric Marti |
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Title |
Calculating the Bounds on the Optimal Parameters of Elasticity for a Snake |
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Year |
1994 |
Publication |
Technical Report |
Abbreviated Journal |
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Aalborg University |
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Aalborg University, Laboratory of image Analysis. |
Place of Publication |
Denmark |
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Aalborg University, Laboratory of image Analysis. |
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MILAB;IAM |
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no |
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Call Number |
IAM @ iam @ LRM1994 |
Serial |
1560 |
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Author |
Olivier Penacchio |
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Title |
Relative Density of L, M, S photoreceptors in the Human Retina |
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Report |
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Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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Volume |
135 |
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Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
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no |
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Call Number |
Admin @ si @ Pen2009 |
Serial |
2394 |
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Author |
Onur Ferhat |
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Title |
Eye-Tracking with Webcam-Based Setups: Implementation of a Real-Time System and an Analysis of Factors Affecting Performance |
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Report |
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Year |
2012 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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Volume |
172 |
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Keywords |
Computer vision, eye-tracking, gaussian process, feature selection, optical flow |
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Abstract |
In the recent years commercial eye-tracking hardware has become more common, with the introduction of new models from several brands that have better performance and easier setup procedures. A cause and at the same time a result of this phenomenon is the popularity of eye-tracking research directed at marketing, accessibility and usability, among others.
One problem with these hardware components is scalability, because both the price and the necessary expertise to operate them makes it practically impossible in the large scale. In this work, we analyze the feasibility of a software eye-tracking system based on a single, ordinary webcam. Our aim is to discover the limits of such a system and to see whether it provides acceptable performances.
The significance of this setup is that it is the most common setup found in consumer environments, off-the-shelf electronic devices such as laptops, mobile phones and tablet computers. As no special equipment such as infrared lights, mirrors or zoom lenses are used; setting up and calibrating the system is easier compared to other approaches using these components.
Our work is based on the open source application Opengazer, which provides a good starting point for our contributions. We propose several improvements in order to push the system's performance further and make it feasible as a robust, real-time device. Then we carry out an elaborate experiment involving 18 human subjects and 4 different system setups. Finally, we give an analysis of the results and discuss the effects of setup changes, subject differences and modifications in the software. |
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Address |
Bellaterra |
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Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Editor |
Fernando Vilariño |
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Notes |
MV |
Approved |
no |
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Call Number |
Admin @ si @ Fer2012; IAM @ iam @ Fer2012 |
Serial |
2165 |
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Author |
Oriol Martinez |
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Title |
Semantic Retrieval of Memory Color Content |
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Report |
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Year |
2004 |
Publication |
CVC Technical Report #80 |
Abbreviated Journal |
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CVC (UAB) |
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no |
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Call Number |
Admin @ si @ 38047 |
Serial |
508 |
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Author |
Oriol Pujol |
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Title |
Model-based three dimensional interpolation of IVUS images |
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Year |
1999 |
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CVC Technical Report #27 |
Abbreviated Journal |
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HuPBA;MILAB |
Approved |
no |
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Call Number |
BCNPCL @ bcnpcl @ Puj1999 |
Serial |
49 |
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Author |
Oriol Ramos Terrades |
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Title |
Descripcio i classificacio de simbols tecnics usant la transformada de crestetes |
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Year |
2003 |
Publication |
CVC Technical Report #74 |
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DAG |
Approved |
no |
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Call Number |
DAG @ dag @ Ram2003 |
Serial |
517 |
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Author |
Paramveer S. Dhillon; Francisco Javier Orozco; Jordi Gonzalez |
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Title |
Real-Time Monocular Face Tracking Using and Active Camera |
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2008 |
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CVC Technical Report # 119 |
Abbreviated Journal |
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Bellaterra (Spain) |
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no |
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Call Number |
ISE @ ise @ DOG2008 |
Serial |
1006 |
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Author |
Partha Pratim Roy |
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Title |
An Approach to Text/Graphics Separation in Color Maps |
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2007 |
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CVC Technical Report #104 |
Abbreviated Journal |
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CVC (UAB) |
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no |
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Call Number |
Admin @ si @ Roy2007 |
Serial |
819 |
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Author |
Patricia Marquez |
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Title |
Conditions Ensuring Accuracy of Local Optical Flow Schemes |
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2010 |
Publication |
CVC Tehcnical Report |
Abbreviated Journal |
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Volume |
157 |
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Abstract |
Accurate computation of optical flow is a key-point in many image processing fields. Detection of anomalous and unpredicted agents (such as pedestrians, bikers or cars) in urban scenes or pathology discrimination in medical imaging sequences, to mention just a two. The above kinds sequences present two main difficulties for standard optical flow techniques. On one hand, variability in acquisition conditions (illuminance, medical imaging modality, ...) force an alterantive representation for images fulfilling the britghtness constancy constrain. On the hand, current variational schemes produce oversmoothed fields unable to properly model discontinuous behaviours such as collisions or functionless pathological areas. This master project explores the abilities and limitations of local and global optical flow approaches. The master student will put especial emphasis in the theoretical grounds behind in order to design a variational framework combining the theoretical advantages of the considered techniques. In particular an optical flow based on Gabor phase tracking (developed in the group for medical imaging) will be generalized to urban scenes. |
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Master's thesis |
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Bellaterra 08193, Barcelona, Spain |
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IAM; |
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no |
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IAM @ iam @ Mar2010 |
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1582 |
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Author |
Pau Baiget |
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Title |
Interpretation of Human Behavior in Image Sequences |
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2007 |
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CVC Technical Report #102 |
Abbreviated Journal |
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CVC (UAB) |
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Call Number |
Admin @ si @ Bai2007 |
Serial |
816 |
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Author |
Petia Radeva; Amir Amini; Jintao Huang; Enric Marti |
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Title |
Deformable B-Solids: application for localization and tracking of MRI-SPAMM data |
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Year |
1996 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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8 |
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To date, MRI-SPAMM data from different image slices have been analyzed independently. In this paper, we propose an approach for 3D tag localization and tracking of SPAMM data by a novel deformable B-solid. The solid is defined in terms of a 3D tensor product B-spline. The isoparametric curves of the B-spline solid have special importance. These are termed implicit snakes as they deform under image forces from tag lines in different image slices. The localization and tracking of tag lines is performed under constraints of continuity and smoothness of the B-solid. The framework unifies the problems of localization, and displacement fitting and interpolation into the same procedure utilizing B-spline bases for interpolation. To track motion from boundaries and restrict image forces to the myocardium, a volumetric model is employed as a pair of coupled endocardial and epicardial B-spline surfaces. To recover deformations in the LV an energy-minimization problem is posed where both tag and ... |
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CVC (UAB) |
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MILAB;IAM |
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no |
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Call Number |
IAM @ iam @ RHM1996 |
Serial |
1631 |
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