| Records |
| Author |
Xavier Roca; X. Binefa; Jordi Vitria |
Title  |
A New Accomodation Algorithm for a Microscopy Environment. |
Type |
Miscellaneous |
| Year |
1997 |
Publication |
VII National Symposium on Pattern Recognition and image Analysis. Vol. 2, pp. 66–67. |
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OR;ISE;MV |
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no |
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BCNPCL @ bcnpcl @ RBV1997 |
Serial |
37 |
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| Author |
Xavier Roca; X. Binefa; Jordi Vitria |
| Title |
A New Autofocus Algorithm for Cytological Tissue in a Microscopy Environment. |
Type |
Miscellaneous |
| Year |
1998 |
Publication |
Optical Engineering. |
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OR;ISE;MV |
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BCNPCL @ bcnpcl @ RBV1998 |
Serial |
16 |
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| Author |
C. Alejandro Parraga; Javier Vazquez; Maria Vanrell |
| Title |
A new cone activation-based natural images dataset |
Type |
Journal Article |
| Year |
2009 |
Publication |
Perception |
Abbreviated Journal |
PER |
| Volume |
36 |
Issue |
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Pages |
180 |
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| Abstract |
We generated a new dataset of digital natural images where each colour plane corresponds to the human LMS (long-, medium-, short-wavelength) cone activations. The images were chosen to represent five different visual environments (eg forest, seaside, mountain snow, urban, motorways) and were taken under natural illumination at different times of day. At the bottom-left corner of each picture there was a matte grey ball of approximately constant spectral reflectance (across the camera's response spectrum,) and nearly Lambertian reflective properties, which allows to compute (and remove, if necessary) the illuminant's colour and intensity. The camera (Sigma Foveon SD10) was calibrated by measuring its sensor's spectral responses using a set of 31 spectrally narrowband interference filters. This allowed conversion of the final camera-dependent RGB colour space into the Smith and Pokorny (1975) cone activation space by means of a polynomial transformation, optimised for a set of 1269 Munsell chip reflectances. This new method is an improvement over the usual 3 × 3 matrix transformation which is only accurate for spectrally-narrowband colours. The camera-to-LMS transformation can be recalculated to consider other non-human visual systems. The dataset is available to download from our website. |
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CIC |
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no |
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CAT @ cat @ PVV2009 |
Serial |
1193 |
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| Author |
Fadi Dornaika; Jose Manuel Alvarez; Angel Sappa; Antonio Lopez |
| Title |
A New Framework for Stereo Sensor Pose through Road Segmentation and Registration |
Type |
Journal Article |
| Year |
2011 |
Publication |
IEEE Transactions on Intelligent Transportation Systems |
Abbreviated Journal |
TITS |
| Volume |
12 |
Issue |
4 |
Pages |
954-966 |
| Keywords |
road detection |
| Abstract |
This paper proposes a new framework for real-time estimation of the onboard stereo head's position and orientation relative to the road surface, which is required for any advanced driver-assistance application. This framework can be used with all road types: highways, urban, etc. Unlike existing works that rely on feature extraction in either the image domain or 3-D space, we propose a framework that directly estimates the unknown parameters from the stream of stereo pairs' brightness. The proposed approach consists of two stages that are invoked for every stereo frame. The first stage segments the road region in one monocular view. The second stage estimates the camera pose using a featureless registration between the segmented monocular road region and the other view in the stereo pair. This paper has two main contributions. The first contribution combines a road segmentation algorithm with a registration technique to estimate the online stereo camera pose. The second contribution solves the registration using a featureless method, which is carried out using two different optimization techniques: 1) the differential evolution algorithm and 2) the Levenberg-Marquardt (LM) algorithm. We provide experiments and evaluations of performance. The results presented show the validity of our proposed framework. |
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1524-9050 |
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ADAS |
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no |
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Admin @ si @ DAS2011; ADAS @ adas @ das2011a |
Serial |
1833 |
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| Author |
Santiago Segui; Michal Drozdzal; Ekaterina Zaytseva; Carolina Malagelada; Fernando Azpiroz; Petia Radeva; Jordi Vitria |
| Title |
A new image centrality descriptor for wrinkle frame detection in WCE videos |
Type |
Conference Article |
| Year |
2013 |
Publication |
13th IAPR Conference on Machine Vision Applications |
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Issue |
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| Abstract |
Small bowel motility dysfunctions are a widespread functional disorder characterized by abdominal pain and altered bowel habits in the absence of specific and unique organic pathology. Current methods of diagnosis are complex and can only be conducted at some highly specialized referral centers. Wireless Video Capsule Endoscopy (WCE) could be an interesting diagnostic alternative that presents excellent clinical advantages, since it is non-invasive and can be conducted by non specialists. The purpose of this work is to present a new method for the detection of wrinkle frames in WCE, a critical characteristic to detect one of the main motility events: contractions. The method goes beyond the use of one of the classical image feature, the Histogram |
| Address |
Kyoto; Japan; May 2013 |
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MVA |
| Notes |
OR; MILAB; 600.046;MV |
Approved |
no |
| Call Number |
Admin @ si @ SDZ2013 |
Serial |
2239 |
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| Author |
Wenjuan Gong; Jordi Gonzalez; Joao Manuel R. S. Taveres; Xavier Roca |
| Title |
A New Image Dataset on Human Interactions |
Type |
Conference Article |
| Year |
2012 |
Publication |
7th Conference on Articulated Motion and Deformable Objects |
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| Volume |
7378 |
Issue |
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Pages |
204-209 |
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| Abstract |
This article describes a new collection of still image dataset which are dedicated to interactions between people. Human action recognition from still images have been a hot topic recently, but most of them are actions performed by a single person, like running, walking, riding bikes, phoning and so on and there is no interactions between people in one image. The dataset collected in this paper are concentrating on human interaction between two people aiming to explore this new topic in the research area of action recognition from still images. |
| Address |
Mallorca |
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| Publisher |
Springer Berlin Heidelberg |
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0302-9743 |
ISBN |
978-3-642-31566-4 |
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AMDO |
| Notes |
ISE |
Approved |
no |
| Call Number |
Admin @ si @ GGT2012 |
Serial |
2030 |
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| Author |
Miquel Ferrer; Ernest Valveny; F. Serratosa |
| Title |
A New Optimal Algorithm for the Generalized Median Graph Computation Based on the Maximum Common Subgraph |
Type |
Report |
| Year |
2007 |
Publication |
CVC Technical Report #109 |
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Bellaterra (Sapin) |
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DAG |
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no |
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DAG @ dag @ FVS2007c |
Serial |
839 |
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| Author |
Andres Traumann; Sergio Escalera; Gholamreza Anbarjafari |
| Title |
A New Retexturing Method for Virtual Fitting Room Using Kinect 2 Camera |
Type |
Conference Article |
| Year |
2015 |
Publication |
2015 IEEE Conference on Computer Vision and Pattern Recognition Worshops (CVPRW) |
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Issue |
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Pages |
75-79 |
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| Address |
Boston; EEUU; June 2015 |
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CVPRW |
| Notes |
HuPBA;MILAB |
Approved |
no |
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Admin @ si @ TEA2015 |
Serial |
2653 |
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| Author |
Ahmed M. A. Salih; Ilaria Boscolo Galazzo; Zahra Zahra Raisi-Estabragh; Steffen E. Petersen; Polyxeni Gkontra; Karim Lekadir; Gloria Menegaz; Petia Radeva |
| Title |
A new scheme for the assessment of the robustness of Explainable Methods Applied to Brain Age estimation |
Type |
Conference Article |
| Year |
2021 |
Publication |
34th International Symposium on Computer-Based Medical Systems |
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Issue |
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Pages |
492-497 |
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Deep learning methods show great promise in a range of settings including the biomedical field. Explainability of these models is important in these fields for building end-user trust and to facilitate their confident deployment. Although several Machine Learning Interpretability tools have been proposed so far, there is currently no recognized evaluation standard to transfer the explainability results into a quantitative score. Several measures have been proposed as proxies for quantitative assessment of explainability methods. However, the robustness of the list of significant features provided by the explainability methods has not been addressed. In this work, we propose a new proxy for assessing the robustness of the list of significant features provided by two explainability methods. Our validation is defined at functionality-grounded level based on the ranked correlation statistical index and demonstrates its successful application in the framework of brain aging estimation. We assessed our proxy to estimate brain age using neuroscience data. Our results indicate small variability and high robustness in the considered explainability methods using this new proxy. |
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CBMS |
| Notes |
MILAB; no proj |
Approved |
no |
| Call Number |
Admin @ si @ SBZ2021 |
Serial |
3629 |
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| Author |
A. M. Here; B. C. Lopez; Debora Gil; J. J. Camarero; Jordi Martinez-Vilalta |
| Title |
A new software to analyse wood anatomical features in conifer species |
Type |
Conference Article |
| Year |
2013 |
Publication |
International Symposium on Wood Structure in Plant Biology and Ecology |
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International Symposium on Wood Structure in Plant Biology and Ecology |
| Address |
Naples; Italy; March 2013 |
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WSE |
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IAM |
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no |
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Admin @ si @ HLG2013 |
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2303 |
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| Author |
Javier Vazquez; J. Kevin O'Regan; Maria Vanrell; Graham D. Finlayson |
| Title |
A new spectrally sharpened basis to predict colour naming, unique hues, and hue cancellation |
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Journal Article |
| Year |
2012 |
Publication |
Journal of Vision |
Abbreviated Journal |
VSS |
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12 |
Issue |
6 (7) |
Pages |
1-14 |
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| Abstract |
When light is reflected off a surface, there is a linear relation between the three human photoreceptor responses to the incoming light and the three photoreceptor responses to the reflected light. Different colored surfaces have different linear relations. Recently, Philipona and O'Regan (2006) showed that when this relation is singular in a mathematical sense, then the surface is perceived as having a highly nameable color. Furthermore, white light reflected by that surface is perceived as corresponding precisely to one of the four psychophysically measured unique hues. However, Philipona and O'Regan's approach seems unrelated to classical psychophysical models of color constancy. In this paper we make this link. We begin by transforming cone sensors to spectrally sharpened counterparts. In sharp color space, illumination change can be modeled by simple von Kries type scalings of response values within each of the spectrally sharpened response channels. In this space, Philipona and O'Regan's linear relation is captured by a simple Land-type color designator defined by dividing reflected light by incident light. This link between Philipona and O'Regan's theory and Land's notion of color designator gives the model biological plausibility. We then show that Philipona and O'Regan's singular surfaces are surfaces which are very close to activating only one or only two of such newly defined spectrally sharpened sensors, instead of the usual three. Closeness to zero is quantified in a new simplified measure of singularity which is also shown to relate to the chromaticness of colors. As in Philipona and O'Regan's original work, our new theory accounts for a large variety of psychophysical color data. |
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CIC |
Approved |
no |
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Admin @ si @ VOV2012 |
Serial |
1998 |
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| Author |
Oriol Ramos Terrades; Ernest Valveny |
| Title |
A new use of the ridgelets transform for describing linear singularities in images |
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Journal Article |
| Year |
2006 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
27 |
Issue |
6 |
Pages |
587–596 |
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DAG |
Approved |
no |
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DAG @ dag @ RaV2006a |
Serial |
635 |
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| Author |
O. Fors; A. Richichi; Xavier Otazu; J. Nuñez |
| Title |
A new wavelet-based approach for the automated treatment of large sets of lunar occultation data |
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Journal |
| Year |
2008 |
Publication |
Astronomy and Astrohysics |
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480 |
Issue |
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297–304 |
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CIC |
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no |
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CAT @ cat @ FRO2008 |
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934 |
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| Author |
Razieh Rastgoo; Kourosh Kiani; Sergio Escalera |
| Title |
A Non-Anatomical Graph Structure for isolated hand gesture separation in continuous gesture sequences |
Type |
Miscellaneous |
| Year |
2022 |
Publication |
Arxiv |
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Continuous Hand Gesture Recognition (CHGR) has been extensively studied by researchers in the last few decades. Recently, one model has been presented to deal with the challenge of the boundary detection of isolated gestures in a continuous gesture video [17]. To enhance the model performance and also replace the handcrafted feature extractor in the presented model in [17], we propose a GCN model and combine it with the stacked Bi-LSTM and Attention modules to push the temporal information in the video stream. Considering the breakthroughs of GCN models for skeleton modality, we propose a two-layer GCN model to empower the 3D hand skeleton features. Finally, the class probabilities of each isolated gesture are fed to the post-processing module, borrowed from [17]. Furthermore, we replace the anatomical graph structure with some non-anatomical graph structures. Due to the lack of a large dataset, including both the continuous gesture sequences and the corresponding isolated gestures, three public datasets in Dynamic Hand Gesture Recognition (DHGR), RKS-PERSIANSIGN, and ASLVID, are used for evaluation. Experimental results show the superiority of the proposed model in dealing with isolated gesture boundaries detection in continuous gesture sequences |
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HuPBA; no menciona |
Approved |
no |
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Admin @ si @ RKE2022d |
Serial |
3828 |
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| Author |
Jon Almazan; Alicia Fornes; Ernest Valveny |
| Title |
A non-rigid appearance model for shape description and recognition |
Type |
Journal Article |
| Year |
2012 |
Publication |
Pattern Recognition |
Abbreviated Journal |
PR |
| Volume |
45 |
Issue |
9 |
Pages |
3105--3113 |
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Shape recognition; Deformable models; Shape modeling; Hand-drawn recognition |
| Abstract |
In this paper we describe a framework to learn a model of shape variability in a set of patterns. The framework is based on the Active Appearance Model (AAM) and permits to combine shape deformations with appearance variability. We have used two modifications of the Blurred Shape Model (BSM) descriptor as basic shape and appearance features to learn the model. These modifications permit to overcome the rigidity of the original BSM, adapting it to the deformations of the shape to be represented. We have applied this framework to representation and classification of handwritten digits and symbols. We show that results of the proposed methodology outperform the original BSM approach. |
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0031-3203 |
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DAG |
Approved |
no |
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DAG @ dag @ AFV2012 |
Serial |
1982 |
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