| Records |
| Author |
Ekain Artola |
| Title |
Human Attention Map Prediction Combining Visual Features |
Type |
Report |
| Year |
2010 |
Publication  |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
160 |
Issue |
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Thesis |
Bachelor's thesis |
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no |
| Call Number |
Admin @ si @ Art2010 |
Serial |
1352 |
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| Author |
David Fernandez |
| Title |
Handwritten Word Spotting in Old Manuscript Images using Shape Descriptors |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
161 |
Issue |
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Master's thesis |
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DAG |
Approved |
no |
| Call Number |
Admin @ si @ Fer2010b |
Serial |
1353 |
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| Author |
Jon Almazan |
| Title |
Deforming the Blurred Shape Model for Shape Description and Recognition |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
163 |
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Master's thesis |
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Approved |
no |
| Call Number |
Admin @ si @ Alm2010 |
Serial |
1354 |
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| Author |
Nataliya Shapovalova |
| Title |
On Importance of Interaction and Context |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
155 |
Issue |
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Master's thesis |
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ISE |
Approved |
no |
| Call Number |
Admin @ si @ Sha2010 |
Serial |
1355 |
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| Author |
Zhanwu Xiong |
| Title |
A Pompd Model for Active Camera Control |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
156 |
Issue |
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Master's thesis |
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ISE |
Approved |
no |
| Call Number |
Admin @ si @ Xio2010 |
Serial |
1356 |
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| Author |
Sergio Vera |
| Title |
Finger joint modelling from hand X-ray images for assessing rheumatoid arthritis |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
164 |
Issue |
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Pages |
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| Keywords |
Rheumatoid arthritis; joint detection; X-ray; Van der Heijde score |
| Abstract |
Rheumatoid arthritis is an autoimmune, systemic, inflammatory disorder that mainly af- fects bone joints. While there is no cure for this disease, continuous advances on palliative treatments require frequent verification of patient’s illness evolution. Such evolution is mea- sured through several available semi-quantitative methods that require evaluation of hand and foot X-ray images. Accurate assessment is a time consuming task that requires highly trained personnel. This hinders a generalized use in clinical practice for early diagnose and disease follow-up. In the context of the automatization of such evaluation methods we present a method for detection and characterization of finger joints in hand radiography images. Several measures for assessing the reduction of joint space width are proposed. We compare for the first time such measures to the Van der Heijde score, the gold standard method for rheumatoid arthritis assessment. The proposed method outperforms existing strategies with a detection rate above 95%. Our comparison to Van der Heijde index shows a promising correlation that encourages further research. |
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Thesis |
Master's thesis |
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Place of Publication |
Bellaterra 01893, Barcelona, Spain |
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IAM |
Approved |
no |
| Call Number |
IAM @ iam @ Ver2010 |
Serial |
1661 |
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| Author |
Monica Piñol |
| Title |
Adaptative Vocabulary Tree for Image Classification using Reinforcement Learning |
Type |
Report |
| Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
162 |
Issue |
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Pages |
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| Address |
Bellaterra (Barcelona) |
| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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ADAS |
Approved |
no |
| Call Number |
Admin @ si @ Piñ2010 |
Serial |
1936 |
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| Author |
Aura Hernandez-Sabate; Monica Mitiko; Sergio Shiguemi; Debora Gil |
| Title |
A validation protocol for assessing cardiac phase retrieval in IntraVascular UltraSound |
Type |
Conference Article |
| Year |
2010 |
Publication |
Computing in Cardiology |
Abbreviated Journal |
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| Volume |
37 |
Issue |
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Pages |
899-902 |
| Keywords |
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| Abstract |
A good reliable approach to cardiac triggering is of utmost importance in obtaining accurate quantitative results of atherosclerotic plaque burden from the analysis of IntraVascular UltraSound. Although, in the last years, there has been an increase in research of methods for retrospective gating, there is no general consensus in a validation protocol. Many methods are based on quality assessment of longitudinal cuts appearance and those reporting quantitative numbers do not follow a standard protocol. Such heterogeneity in validation protocols makes faithful comparison across methods a difficult task. We propose a validation protocol based on the variability of the retrieved cardiac phase and explore the capability of several quality measures for quantifying such variability. An ideal detector, suitable for its application in clinical practice, should produce stable phases. That is, it should always sample the same cardiac cycle fraction. In this context, one should measure the variability (variance) of a candidate sampling with respect a ground truth (reference) sampling, since the variance would indicate how spread we are aiming a target. In order to quantify the deviation between the sampling and the ground truth, we have considered two quality scores reported in the literature: signed distance to the closest reference sample and distance to the right of each reference sample. We have also considered the residuals of the regression line of reference against candidate sampling. The performance of the measures has been explored on a set of synthetic samplings covering different cardiac cycle fractions and variabilities. From our simulations, we conclude that the metrics related to distances are sensitive to the shift considered while the residuals are robust against fraction and variabilities as far as one can establish a pair-wise correspondence between candidate and reference. We will further investigate the impact of false positive and negative detections in experimental data. |
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| Publisher |
IEEE |
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| ISSN |
0276-6547 |
ISBN |
978-1-4244-7318-2 |
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Conference |
CINC |
| Notes |
IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ HSM2010 |
Serial |
1551 |
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| Author |
David Geronimo; Angel Sappa; Daniel Ponsa; Antonio Lopez |
| Title |
2D-3D based on-board pedestrian detection system |
Type |
Journal Article |
| Year |
2010 |
Publication |
Computer Vision and Image Understanding |
Abbreviated Journal |
CVIU |
| Volume |
114 |
Issue |
5 |
Pages |
583–595 |
| Keywords |
Pedestrian detection; Advanced Driver Assistance Systems; Horizon line; Haar wavelets; Edge orientation histograms |
| Abstract |
During the next decade, on-board pedestrian detection systems will play a key role in the challenge of increasing traffic safety. The main target of these systems, to detect pedestrians in urban scenarios, implies overcoming difficulties like processing outdoor scenes from a mobile platform and searching for aspect-changing objects in cluttered environments. This makes such systems combine techniques in the state-of-the-art Computer Vision. In this paper we present a three module system based on both 2D and 3D cues. The first module uses 3D information to estimate the road plane parameters and thus select a coherent set of regions of interest (ROIs) to be further analyzed. The second module uses Real AdaBoost and a combined set of Haar wavelets and edge orientation histograms to classify the incoming ROIs as pedestrian or non-pedestrian. The final module loops again with the 3D cue in order to verify the classified ROIs and with the 2D in order to refine the final results. According to the results, the integration of the proposed techniques gives rise to a promising system. |
| Address |
Computer Vision and Image Understanding (Special Issue on Intelligent Vision Systems), Vol. 114(5):583-595 |
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Edition |
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| ISSN |
1077-3142 |
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| Notes |
ADAS |
Approved |
no |
| Call Number |
ADAS @ adas @ GSP2010 |
Serial |
1341 |
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| Author |
Angel Sappa (ed) |
| Title |
Computer Graphics and Imaging |
Type |
Book Whole |
| Year |
2010 |
Publication |
Computer Graphics and Imaging |
Abbreviated Journal |
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Issue |
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Editor |
Angel Sappa |
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ISBN |
978–0–88986–836–6 |
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Conference |
CGIM |
| Notes |
ADAS |
Approved |
no |
| Call Number |
ADAS @ adas @ Sap2010 |
Serial |
1468 |
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| Author |
Muhammad Muzzamil Luqman; Thierry Brouard; Jean-Yves Ramel; Josep Llados |
| Title |
Vers une approche foue of encapsulation de graphes: application a la reconnaissance de symboles |
Type |
Conference Article |
| Year |
2010 |
Publication |
Colloque International Francophone sur l'Écrit et le Document |
Abbreviated Journal |
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Issue |
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Pages |
169-184 |
| Keywords |
Fuzzy interval; Graph embedding; Bayesian network; Symbol recognition |
| Abstract |
We present a new methodology for symbol recognition, by employing a structural approach for representing visual associations in symbols and a statistical classifier for recognition. A graphic symbol is vectorized, its topological and geometrical details are encoded by an attributed relational graph and a signature is computed for it. Data adapted fuzzy intervals have been introduced for addressing the sensitivity of structural representations to noise. The joint probability distribution of signatures is encoded by a Bayesian network, which serves as a mechanism for pruning irrelevant features and choosing a subset of interesting features from structural signatures of underlying symbol set, and is deployed in a supervised learning scenario for recognizing query symbols. Experimental results on pre-segmented 2D linear architectural and electronic symbols from GREC databases are presented. |
| Address |
Sousse, Tunisia |
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CIFED |
| Notes |
DAG |
Approved |
no |
| Call Number |
DAG @ dag @ LBR2010a |
Serial |
1293 |
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| Author |
Herve Locteau; Sebastien Mace; Ernest Valveny; Salvatore Tabbone |
| Title |
Extraction des pieces de un plan de habitation |
Type |
Conference Article |
| Year |
2010 |
Publication |
Colloque Internacional Francophone de l´Ecrit et le Document |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1–12 |
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| Abstract |
In this article, a method to extract the rooms of an architectural floor plan image is described. We first present a line detection algorithm to extract long lines in the image. Those lines are analyzed to identify the existing walls. From this point, room extraction can be seen as a classical segmentation task for which each region corresponds to a room. The chosen resolution strategy consists in recursively decomposing the image until getting nearly convex regions. The notion of convexity is difficult to quantify, and the selection of separation lines can also be rough. Thus, we take advantage of knowledge associated to architectural floor plans in order to obtain mainly rectangular rooms. Preliminary tests on a set of real documents show promising results. |
| Address |
Sousse, Tunisia |
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CIFED |
| Notes |
DAG |
Approved |
no |
| Call Number |
DAG @ dag @ LMV2010 |
Serial |
1440 |
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| Author |
David Geronimo; Angel Sappa; Antonio Lopez |
| Title |
Stereo-based Candidate Generation for Pedestrian Protection Systems |
Type |
Book Chapter |
| Year |
2010 |
Publication |
Binocular Vision: Development, Depth Perception and Disorders |
Abbreviated Journal |
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| Volume |
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Issue |
9 |
Pages |
189–208 |
| Keywords |
Pedestrian Detection |
| Abstract |
This chapter describes a stereo-based algorithm that provides candidate image windows to a latter 2D classification stage in an on-board pedestrian detection system. The proposed algorithm, which consists of three stages, is based on the use of both stereo imaging and scene prior knowledge (i.e., pedestrians are on the ground) to reduce the candidate searching space. First, a successful road surface fitting algorithm provides estimates on the relative ground-camera pose. This stage directs the search toward the road area thus avoiding irrelevant regions like the sky. Then, three different schemes are used to scan the estimated road surface with pedestrian-sized windows: (a) uniformly distributed through the road surface (3D); (b) uniformly distributed through the image (2D); (c) not uniformly distributed but according to a quadratic function (combined 2D-3D). Finally, the set of candidate windows is reduced by analyzing their 3D content. Experimental results of the proposed algorithm, together with statistics of searching space reduction are provided. |
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NOVA Publishers |
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ADAS |
Approved |
no |
| Call Number |
ADAS @ adas @ GSL2010 |
Serial |
1301 |
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| Author |
Thierry Brouard; A. Delaplace; Muhammad Muzzamil Luqman; H. Cardot; Jean-Yves Ramel |
| Title |
Design of Evolutionary Methods Applied to the Learning of Bayesian Nerwork Structures |
Type |
Book Chapter |
| Year |
2010 |
Publication |
Bayesian Network |
Abbreviated Journal |
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Issue |
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Pages |
13-37 |
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| Publisher |
Sciyo |
Place of Publication |
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Editor |
Ahmed Rebai |
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ISBN |
978-953-307-124-4 |
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no |
| Call Number |
Admin @ si @ BDL2010 |
Serial |
1461 |
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| Author |
Maurizio Mencuccini; Jordi Martinez-Vilalta; Josep Piñol; Lasse Loepfe; Mireia Burnat ; Xavier Alvarez; Juan Camacho; Debora Gil |
| Title |
A quantitative and statistically robust method for the determination of xylem conduit spatial distribution |
Type |
Journal Article |
| Year |
2010 |
Publication |
American Journal of Botany |
Abbreviated Journal |
AJB |
| Volume |
97 |
Issue |
8 |
Pages |
1247-1259 |
| Keywords |
Geyer; hydraulic conductivity; point pattern analysis; Ripley; Spatstat; vessel clusters; xylem anatomy; xylem network |
| Abstract |
Premise of the study: Because of their limited length, xylem conduits need to connect to each other to maintain water transport from roots to leaves. Conduit spatial distribution in a cross section plays an important role in aiding this connectivity. While indices of conduit spatial distribution already exist, they are not well defined statistically. * Methods: We used point pattern analysis to derive new spatial indices. One hundred and five cross-sectional images from different species were transformed into binary images. The resulting point patterns, based on the locations of the conduit centers-of-area, were analyzed to determine whether they departed from randomness. Conduit distribution was then modeled using a spatially explicit stochastic model. * Key results: The presence of conduit randomness, uniformity, or aggregation depended on the spatial scale of the analysis. The large majority of the images showed patterns significantly different from randomness at least at one spatial scale. A strong phylogenetic signal was detected in the spatial variables. * Conclusions: Conduit spatial arrangement has been largely conserved during evolution, especially at small spatial scales. Species in which conduits were aggregated in clusters had a lower conduit density compared to those with uniform distribution. Statistically sound spatial indices must be employed as an aid in the characterization of distributional patterns across species and in models of xylem water transport. Point pattern analysis is a very useful tool in identifying spatial patterns. |
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IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ MMG2010 |
Serial |
1623 |
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