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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) | Abbreviated Journal | |
Volume | Issue | Pages | 75-79 | ||
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Address | Boston; EEUU; June 2015 | ||||
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Area | Expedition | Conference | CVPRW | ||
Notes | HuPBA;MILAB | Approved | no | ||
Call Number | Admin @ si @ TEA2015 | Serial | 2653 | ||
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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 | Abbreviated Journal | |
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Address | Bellaterra (Sapin) | ||||
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Notes | DAG | Approved | no | ||
Call Number | DAG @ dag @ FVS2007c | Serial | 839 | ||
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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 | Abbreviated Journal | |
Volume | 7378 | Issue | 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 | Place of Publication | Editor | ||
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ISSN | 0302-9743 | ISBN | 978-3-642-31566-4 | Medium | |
Area | Expedition | Conference | AMDO | ||
Notes | ISE | Approved | no | ||
Call Number | Admin @ si @ GGT2012 | Serial | 2030 | ||
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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 | Abbreviated Journal | |
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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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Area | Expedition | Conference | MVA | ||
Notes | OR; MILAB; 600.046;MV | Approved | no | ||
Call Number | Admin @ si @ SDZ2013 | Serial | 2239 | ||
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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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ISSN | 1524-9050 | ISBN | Medium | ||
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Notes | ADAS | Approved | no | ||
Call Number | Admin @ si @ DAS2011; ADAS @ adas @ das2011a | Serial | 1833 | ||
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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 | 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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Notes | CIC | Approved | no | ||
Call Number | CAT @ cat @ PVV2009 | Serial | 1193 | ||
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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. | Abbreviated Journal | |
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Notes | OR;ISE;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ RBV1998 | Serial | 16 | ||
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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. | Abbreviated Journal | |
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Notes | OR;ISE;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ RBV1997 | Serial | 37 | ||
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Author | Olivier Penacchio; Laura Dempere-Marco; Xavier Otazu | ||||
Title | A Neurodynamical Model Of Brightness Induction In V1 Following Static And Dynamic Contextual Influences | Type | Abstract | ||
Year | 2012 | Publication | 8th Federation of European Neurosciences | Abbreviated Journal | |
Volume | 6 | Issue | Pages | 63-64 | |
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Abstract | Brightness induction is the modulation of the perceived intensity of an area by the luminance of surrounding areas. Although striate cortex is traditionally regarded as an area mostly responsive to ensory (i.e. retinal) information,
neurophysiological evidence suggests that perceived brightness information mightbe explicitly represented in V1. Such evidence has been observed both in anesthetised cats where neuronal response modulations have been found to follow luminance changes outside the receptive felds and in human fMRI measurements. In this work, possible neural mechanisms that ofer a plausible explanation for such phenomenon are investigated. To this end, we consider the model proposed by Z.Li (Li, Network:Comput. Neural Syst., 10 (1999)) which is based on neurophysiological evidence and focuses on the part of V1 responsible for contextual infuences, i.e. layer 2-3 pyramidal cells, interneurons, and horizontal intracortical connections. This model has reproduced other phenomena such as contour detection and preattentive segmentation, which share with brightness induction the relevant efect of contextual infuences. We have extended the original model such that the input to the network is obtained from a complete multiscale and multiorientation wavelet decomposition, thereby allowing the recovery of an image refecting the perceived intensity. The proposed model successfully accounts for well known psychophysical efects for static contexts (among them: the White's and modifed White's efects, the Todorovic, Chevreul, achromatic ring patterns, and grating induction efects) and also for brigthness induction in dynamic contexts defned by modulating the luminance of surrounding areas (e.g. the brightness of a static central area is perceived to vary in antiphase to the sinusoidal luminance changes of its surroundings). This work thus suggests that intra-cortical interactions in V1 could partially explain perceptual brightness induction efects and reveals how a common general architecture may account for several different fundamental processes emerging early in the visual processing pathway. |
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Area | Expedition | Conference | FENS | ||
Notes | CIC | Approved | no | ||
Call Number | Admin @ si @ PDO2012b | Serial | 2181 | ||
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Author | Olivier Penacchio; Xavier Otazu; Laura Dempere-Marco | ||||
Title | A Neurodynamical Model of Brightness Induction in V1 | Type | Journal Article | ||
Year | 2013 | Publication | PloS ONE | Abbreviated Journal | Plos |
Volume | 8 | Issue | 5 | Pages | e64086 |
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Abstract | Brightness induction is the modulation of the perceived intensity of an area by the luminance of surrounding areas. Recent neurophysiological evidence suggests that brightness information might be explicitly represented in V1, in contrast to the more common assumption that the striate cortex is an area mostly responsive to sensory information. Here we investigate possible neural mechanisms that offer a plausible explanation for such phenomenon. To this end, a neurodynamical model which is based on neurophysiological evidence and focuses on the part of V1 responsible for contextual influences is presented. The proposed computational model successfully accounts for well known psychophysical effects for static contexts and also for brightness induction in dynamic contexts defined by modulating the luminance of surrounding areas. This work suggests that intra-cortical interactions in V1 could, at least partially, explain brightness induction effects and reveals how a common general architecture may account for several different fundamental processes, such as visual saliency and brightness induction, which emerge early in the visual processing pathway. | ||||
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Notes | CIC | Approved | no | ||
Call Number | Admin @ si @ POD2013 | Serial | 2242 | ||
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Author | David Berga; Xavier Otazu | ||||
Title | A neurodynamic model of saliency prediction in v1 | Type | Journal Article | ||
Year | 2022 | Publication | Neural Computation | Abbreviated Journal | NEURALCOMPUT |
Volume | 34 | Issue | 2 | Pages | 378-414 |
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Abstract | Lateral connections in the primary visual cortex (V1) have long been hypothesized to be responsible for several visual processing mechanisms such as brightness induction, chromatic induction, visual discomfort, and bottom-up visual attention (also named saliency). Many computational models have been developed to independently predict these and other visual processes, but no computational model has been able to reproduce all of them simultaneously. In this work, we show that a biologically plausible computational model of lateral interactions of V1 is able to simultaneously predict saliency and all the aforementioned visual processes. Our model's architecture (NSWAM) is based on Penacchio's neurodynamic model of lateral connections of V1. It is defined as a network of firing rate neurons, sensitive to visual features such as brightness, color, orientation, and scale. We tested NSWAM saliency predictions using images from several eye tracking data sets. We show that the accuracy of predictions obtained by our architecture, using shuffled metrics, is similar to other state-of-the-art computational methods, particularly with synthetic images (CAT2000-Pattern and SID4VAM) that mainly contain low-level features. Moreover, we outperform other biologically inspired saliency models that are specifically designed to exclusively reproduce saliency. We show that our biologically plausible model of lateral connections can simultaneously explain different visual processes present in V1 (without applying any type of training or optimization and keeping the same parameterization for all the visual processes). This can be useful for the definition of a unified architecture of the primary visual cortex. | ||||
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Notes | NEUROBIT; 600.128; 600.120 | Approved | no | ||
Call Number | Admin @ si @ BeO2022 | Serial | 3696 | ||
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Author | Manuel Carbonell; Alicia Fornes; Mauricio Villegas; Josep Llados | ||||
Title | A Neural Model for Text Localization, Transcription and Named Entity Recognition in Full Pages | Type | Journal Article | ||
Year | 2020 | Publication | Pattern Recognition Letters | Abbreviated Journal | PRL |
Volume | 136 | Issue | Pages | 219-227 | |
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Abstract | In the last years, the consolidation of deep neural network architectures for information extraction in document images has brought big improvements in the performance of each of the tasks involved in this process, consisting of text localization, transcription, and named entity recognition. However, this process is traditionally performed with separate methods for each task. In this work we propose an end-to-end model that combines a one stage object detection network with branches for the recognition of text and named entities respectively in a way that shared features can be learned simultaneously from the training error of each of the tasks. By doing so the model jointly performs handwritten text detection, transcription, and named entity recognition at page level with a single feed forward step. We exhaustively evaluate our approach on different datasets, discussing its advantages and limitations compared to sequential approaches. The results show that the model is capable of benefiting from shared features by simultaneously solving interdependent tasks. | ||||
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Notes | DAG; 600.140; 601.311; 600.121 | Approved | no | ||
Call Number | Admin @ si @ CFV2020 | Serial | 3451 | ||
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Author | J. Nuñez; Xavier Otazu; M.T. Merino | ||||
Title | A Multiresolution-Based Method for the Determination of the Relative Resolution between Images. First Application to Remote Sensing and Medical Images | Type | Journal | ||
Year | 2005 | Publication | International Journal of Imaging Systems and Technology, 15(5): 225–235 (IF: 0.439) | Abbreviated Journal | |
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Notes | CIC | Approved | no | ||
Call Number | CAT @ cat @ NOM2005 | Serial | 645 | ||
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Author | Marco Pedersoli | ||||
Title | A Multiresolution Cascade for Human Detection | Type | Miscellaneous | ||
Year | 2008 | Publication | CVC Technical Report #126 | Abbreviated Journal | |
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Address | Barcelona, Spain | ||||
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Notes | ISE | Approved | no | ||
Call Number | Admin @ si @ Ped2008 | Serial | 1148 | ||
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Author | Carles Fernandez; Jordi Gonzalez | ||||
Title | A Multilingually-Extensible Module for Natural Language Generation | Type | Report | ||
Year | 2008 | Publication | CVC Technical Report #120 | Abbreviated Journal | |
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Address | Barcelona, Spain | ||||
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Notes | Approved | no | |||
Call Number | ISE @ ise @ FeG2008 | Serial | 1146 | ||
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