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| Author | Jorge Charco; Angel Sappa; Boris X. Vintimilla; Henry Velesaca | ||||
Title  |
Camera pose estimation in multi-view environments: From virtual scenarios to the real world | Type | Journal Article | ||
| Year | 2021 | Publication | Image and Vision Computing | Abbreviated Journal | IVC |
| Volume | 110 | Issue | Pages | 104182 | |
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| Abstract | This paper presents a domain adaptation strategy to efficiently train network architectures for estimating the relative camera pose in multi-view scenarios. The network architectures are fed by a pair of simultaneously acquired images, hence in order to improve the accuracy of the solutions, and due to the lack of large datasets with pairs of overlapped images, a domain adaptation strategy is proposed. The domain adaptation strategy consists on transferring the knowledge learned from synthetic images to real-world scenarios. For this, the networks are firstly trained using pairs of synthetic images, which are captured at the same time by a pair of cameras in a virtual environment; and then, the learned weights of the networks are transferred to the real-world case, where the networks are retrained with a few real images. Different virtual 3D scenarios are generated to evaluate the relationship between the accuracy on the result and the similarity between virtual and real scenarios—similarity on both geometry of the objects contained in the scene as well as relative pose between camera and objects in the scene. Experimental results and comparisons are provided showing that the accuracy of all the evaluated networks for estimating the camera pose improves when the proposed domain adaptation strategy is used, highlighting the importance on the similarity between virtual-real scenarios. | ||||
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| Notes | MSIAU; 600.130; 600.122 | Approved | no | ||
| Call Number | Admin @ si @ CSV2021 | Serial | 3577 | ||
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| Author | Diego Alejandro Cheda; Daniel Ponsa; Antonio Lopez | ||||
| Title |
Camera Egomotion Estimation in the ADAS Context | Type | Conference Article | ||
| Year | 2010 | Publication | 13th International IEEE Annual Conference on Intelligent Transportation Systems | Abbreviated Journal | |
| Volume | Issue | Pages | 1415–1420 | ||
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| Abstract | Camera-based Advanced Driver Assistance Systems (ADAS) have concentrated many research efforts in the last decades. Proposals based on monocular cameras require the knowledge of the camera pose with respect to the environment, in order to reach an efficient and robust performance. A common assumption in such systems is considering the road as planar, and the camera pose with respect to it as approximately known. However, in real situations, the camera pose varies along time due to the vehicle movement, the road slope, and irregularities on the road surface. Thus, the changes in the camera position and orientation (i.e., the egomotion) are critical information that must be estimated at every frame to avoid poor performances. This work focuses on egomotion estimation from a monocular camera under the ADAS context. We review and compare egomotion methods with simulated and real ADAS-like sequences. Basing on the results of our experiments, we show which of the considered nonlinear and linear algorithms have the best performance in this domain. | ||||
| Address | Madeira Island (Portugal) | ||||
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| ISSN | 2153-0009 | ISBN | 978-1-4244-7657-2 | Medium | |
| Area | Expedition | Conference | ITSC | ||
| Notes | ADAS | Approved | no | ||
| Call Number | ADAS @ adas @ CPL2010 | Serial | 1425 | ||
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| Author | Pierdomenico Fiadino; Victor Ponce; Juan Antonio Torrero-Gonzalez; Marc Torrent-Moreno | ||||
| Title |
Call Detail Records for Human Mobility Studies: Taking Stock of the Situation in the “Always Connected Era" | Type | Conference Article | ||
| Year | 2017 | Publication | Workshop on Big Data Analytics and Machine Learning for Data Communication Networks | Abbreviated Journal | |
| Volume | Issue | Pages | 43-48 | ||
| Keywords | mobile networks; call detail records; human mobility | ||||
| Abstract | The exploitation of cellular network data for studying human mobility has been a popular research topic in the last decade. Indeed, mobile terminals could be considered ubiquitous sensors that allow the observation of human movements on large scale without the need of relying on non-scalable techniques, such as surveys, or dedicated and expensive monitoring infrastructures. In particular, Call Detail Records (CDRs), collected by operators for billing purposes,
have been extensively employed due to their rather large availability, compared to other types of cellular data (e.g., signaling). Despite the interest aroused around this topic, the research community has generally agreed about the scarcity of information provided by CDRs: the position of mobile terminals is logged when some kind of activity (calls, SMS, data connections) occurs, which translates in a picture of mobility somehow biased by the activity degree of users. By studying two datasets collected by a Nation-wide operator in 2014 and 2016, we show that the situation has drastically changed in terms of data volume and quality. The increase of flat data plans and the higher penetration of “ always connected” terminals have driven up the number of recorded CDRs, providing higher temporal accuracy for users’ locations. |
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| Address | UCLA; USA; August 2017 | ||||
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| ISSN | ISBN | 978-1-4503-5054-9 | Medium | ||
| Area | Expedition | Conference | ACMW (SIGCOMM) | ||
| Notes | HuPBA; no menciona | Approved | no | ||
| Call Number | Admin @ si @ FPT2017 | Serial | 2980 | ||
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| Author | Fares Alnajar; Theo Gevers; Roberto Valenti; Sennay Ghebreab | ||||
| Title |
Calibration-free Gaze Estimation using Human Gaze Patterns | Type | Conference Article | ||
| Year | 2013 | Publication | 15th IEEE International Conference on Computer Vision | Abbreviated Journal | |
| Volume | Issue | Pages | 137-144 | ||
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| Abstract | We present a novel method to auto-calibrate gaze estimators based on gaze patterns obtained from other viewers. Our method is based on the observation that the gaze patterns of humans are indicative of where a new viewer will look at [12]. When a new viewer is looking at a stimulus, we first estimate a topology of gaze points (initial gaze points). Next, these points are transformed so that they match the gaze patterns of other humans to find the correct gaze points. In a flexible uncalibrated setup with a web camera and no chin rest, the proposed method was tested on ten subjects and ten images. The method estimates the gaze points after looking at a stimulus for a few seconds with an average accuracy of 4.3 im. Although the reported performance is lower than what could be achieved with dedicated hardware or calibrated setup, the proposed method still provides a sufficient accuracy to trace the viewer attention. This is promising considering the fact that auto-calibration is done in a flexible setup , without the use of a chin rest, and based only on a few seconds of gaze initialization data. To the best of our knowledge, this is the first work to use human gaze patterns in order to auto-calibrate gaze estimators. | ||||
| Address | Sydney | ||||
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| Area | Expedition | Conference | ICCV | ||
| Notes | ALTRES;ISE | Approved | no | ||
| Call Number | Admin @ si @ AGV2013 | Serial | 2365 | ||
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| Author | J. Pladellorens; M.J. Yzuel; J. Castell; Joan Serrat | ||||
| Title |
Calculo automatico del volumen del ventriculo izquierdo. Comparacion con expertos. | Type | Journal | ||
| Year | 1993 | Publication | Optica Pura y Aplicada. | Abbreviated Journal | |
| Volume | 26 | Issue | 3 | Pages | 685–691 |
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| Notes | ADAS | Approved | no | ||
| Call Number | ADAS @ adas @ PYC1993 | Serial | 149 | ||
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| Author | Ole Larsen; Petia Radeva; Enric Marti | ||||
| Title |
Calculating the Bounds on the Optimal Parameters of Elasticity for a Snake | Type | Report | ||
| Year | 1994 | Publication | Technical Report | Abbreviated Journal | |
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| Address | Aalborg University | ||||
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| Publisher | Aalborg University, Laboratory of image Analysis. | Place of Publication | Denmark | Editor | |
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| Area | Aalborg University, Laboratory of image Analysis. | Expedition | Conference | ||
| Notes | MILAB;IAM | Approved | no | ||
| Call Number | IAM @ iam @ LRM1994 | Serial | 1560 | ||
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| Author | Sumit K. Banchhor; Narendra D. Londhe; Tadashi Araki; Luca Saba; Petia Radeva; Narendra N. Khanna; Jasjit S. Suri | ||||
| Title |
Calcium detection, its quantification, and grayscale morphology-based risk stratification using machine learning in multimodality big data coronary and carotid scans: A review. | Type | Journal Article | ||
| Year | 2018 | Publication | Computers in Biology and Medicine | Abbreviated Journal | CBM |
| Volume | 101 | Issue | Pages | 184-198 | |
| Keywords | Heart disease; Stroke; Atherosclerosis; Intravascular; Coronary; Carotid; Calcium; Morphology; Risk stratification | ||||
| Abstract | Purpose of review
Atherosclerosis is the leading cause of cardiovascular disease (CVD) and stroke. Typically, atherosclerotic calcium is found during the mature stage of the atherosclerosis disease. It is therefore often a challenge to identify and quantify the calcium. This is due to the presence of multiple components of plaque buildup in the arterial walls. The American College of Cardiology/American Heart Association guidelines point to the importance of calcium in the coronary and carotid arteries and further recommend its quantification for the prevention of heart disease. It is therefore essential to stratify the CVD risk of the patient into low- and high-risk bins. Recent finding Calcium formation in the artery walls is multifocal in nature with sizes at the micrometer level. Thus, its detection requires high-resolution imaging. Clinical experience has shown that even though optical coherence tomography offers better resolution, intravascular ultrasound still remains an important imaging modality for coronary wall imaging. For a computer-based analysis system to be complete, it must be scientifically and clinically validated. This study presents a state-of-the-art review (condensation of 152 publications after examining 200 articles) covering the methods for calcium detection and its quantification for coronary and carotid arteries, the pros and cons of these methods, and the risk stratification strategies. The review also presents different kinds of statistical models and gold standard solutions for the evaluation of software systems useful for calcium detection and quantification. Finally, the review concludes with a possible vision for designing the next-generation system for better clinical outcomes. |
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| Notes | MILAB; no proj | Approved | no | ||
| Call Number | Admin @ si @ BLA2018 | Serial | 3188 | ||
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| Author | Simone Balocco; Mauricio Gonzalez; Ricardo Ñancule; Petia Radeva; Gabriel Thomas | ||||
| Title |
Calcified Plaque Detection in IVUS Sequences: Preliminary Results Using Convolutional Nets | Type | Conference Article | ||
| Year | 2018 | Publication | International Workshop on Artificial Intelligence and Pattern Recognition | Abbreviated Journal | |
| Volume | 11047 | Issue | Pages | 34-42 | |
| Keywords | Intravascular ultrasound images; Convolutional nets; Deep learning; Medical image analysis | ||||
| Abstract | The manual inspection of intravascular ultrasound (IVUS) images to detect clinically relevant patterns is a difficult and laborious task performed routinely by physicians. In this paper, we present a framework based on convolutional nets for the quick selection of IVUS frames containing arterial calcification, a pattern whose detection plays a vital role in the diagnosis of atherosclerosis. Preliminary experiments on a dataset acquired from eighty patients show that convolutional architectures improve detections of a shallow classifier in terms of 𝐹1-measure, precision and recall. | ||||
| Address | Cuba; September 2018 | ||||
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| Series Editor | Series Title | Abbreviated Series Title | LNCS | ||
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| Area | Expedition | Conference | IWAIPR | ||
| Notes | MILAB; no menciona | Approved | no | ||
| Call Number | Admin @ si @ BGÑ2018 | Serial | 3237 | ||
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| Author | Danna Xue; Luis Herranz; Javier Vazquez; Yanning Zhang | ||||
| Title |
Burst Perception-Distortion Tradeoff: Analysis and Evaluation | Type | Conference Article | ||
| Year | 2023 | Publication | IEEE International Conference on Acoustics, Speech and Signal Processing | Abbreviated Journal | |
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| Abstract | Burst image restoration attempts to effectively utilize the complementary cues appearing in sequential images to produce a high-quality image. Most current methods use all the available images to obtain the reconstructed image. However, using more images for burst restoration is not always the best option regarding reconstruction quality and efficiency, as the images acquired by handheld imaging devices suffer from degradation and misalignment caused by the camera noise and shake. In this paper, we extend the perception-distortion tradeoff theory by introducing multiple-frame information. We propose the area of the unattainable region as a new metric for perception-distortion tradeoff evaluation and comparison. Based on this metric, we analyse the performance of burst restoration from the perspective of the perception-distortion tradeoff under both aligned bursts and misaligned bursts situations. Our analysis reveals the importance of inter-frame alignment for burst restoration and shows that the optimal burst length for the restoration model depends both on the degree of degradation and misalignment. | ||||
| Address | Rodhes Islands; Greece; June 2023 | ||||
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| Area | Expedition | Conference | ICASSP | ||
| Notes | CIC; MACO | Approved | no | ||
| Call Number | Admin @ si @ XHV2023 | Serial | 3909 | ||
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| Author | Jorge Bernal; F. Javier Sanchez; Cristina Rodriguez de Miguel; Gloria Fernandez Esparrach | ||||
| Title |
Bulding up the future of colonoscopy: A synergy between clinicians and computer scientists | Type | Book Chapter | ||
| Year | 2015 | Publication | Colonoscopy and Colorectal Cancer | Abbreviated Journal | |
| Volume | Issue | Pages | |||
| Keywords | Intelligent systems; Image properties; Validation; Clinical drawbacks; Endoluminal scene description | ||||
| Abstract | Recent advances in endoscopic technology have generated an increasing interest in strengthening the collaboration between clinicians and computers scientist to develop intelligent systems that can provide additional information to clinicians in the different stages of an intervention. The objective of this chapter is to identify clinical drawbacks of colonoscopy in order to define potential areas of collaboration. Once areas are defined, we present the challenges that colonoscopy images present in order computational methods to provide with meaningful output, including those related to image formation and acquisition, as they are proven to have an impact in the performance of an intelligent system. Finally, we also propose how to define validation frameworks in order to assess the performance of a given method, making an special emphasis on how databases should be created and annotated and which metrics should be used to evaluate systems correctly. | ||||
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| ISSN | ISBN | 978-953-51-2225-8 | Medium | ||
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| Notes | MV | Approved | no | ||
| Call Number | Admin @ si @ BSR2015 | Serial | 2624 | ||
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| Author | Ognjen Rudovic; Xavier Roca | ||||
| Title |
Building Temporale Templates for Human Behaviour Classification | Type | Conference Article | ||
| Year | 2008 | Publication | First International Workshop on Tracking Humans for the Evaluation of their Motion in Image Sequences BMVC 2008, | Abbreviated Journal | |
| Volume | Issue | Pages | 79–88 | ||
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| Address | Leeds (UK) | ||||
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| ISSN | ISBN | 978-84-935251-9-4 | Medium | ||
| Area | Expedition | Conference | THEMIS’ | ||
| Notes | ISE | Approved | no | ||
| Call Number | ISE @ ise @ RuR2008 | Serial | 1009 | ||
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| Author | Ognjen Rudovic; Jordi Gonzalez | ||||
| Title |
Building Temporal Templates for Human Behaviour Classification | Type | Report | ||
| Year | 2008 | Publication | CVC Technical Report #127 | Abbreviated Journal | |
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| Address | Barcelona, Spain | ||||
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| Notes | Approved | no | |||
| Call Number | ISE @ ise @ RuG 2008 | Serial | 1147 | ||
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| Author | Mathieu Nicolas Delalandre; Tony Pridmore; Ernest Valveny; Eric Trupin; Herve Locteau | ||||
| Title |
Building Synthetic Graphical Documents for Performance Evaluation | Type | Conference Article | ||
| Year | 2007 | Publication | Seventh IAPR International Workshop on Graphics Recognition | Abbreviated Journal | |
| Volume | Issue | Pages | 84–87 | ||
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| Address | Curitiba (Brasil) | ||||
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| Area | Expedition | Conference | GREC | ||
| Notes | DAG | Approved | no | ||
| Call Number | DAG @ dag @ DPV2007 | Serial | 840 | ||
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| Author | Mathieu Nicolas Delalandre; Tony Pridmore; Ernest Valveny; Herve Locteau; Eric Trupin | ||||
| Title |
Building Synthetic Graphical Documents for Performance Evaluation | Type | Book Chapter | ||
| Year | 2008 | Publication | Graphics Recognition: Recent Advances and New Opportunities | Abbreviated Journal | |
| Volume | 5046 | Issue | Pages | 288–298 | |
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| Publisher | Place of Publication | Editor | W. Liu, J. Llados, J.M. Ogier | ||
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| Series Editor | Series Title | Abbreviated Series Title | LNCS | ||
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| Notes | DAG | Approved | no | ||
| Call Number | DAG @ dag @ DPV2008 | Serial | 988 | ||
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| Author | Xavier Otazu; Maria Vanrell | ||||
| Title |
Building Perceived Colour Images. | Type | Miscellaneous | ||
| Year | 2004 | Publication | CGIV 2004 Second European Conference on Colour in Graphics, Imaging, and Vision, 140:145 | Abbreviated Journal | |
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| Address | Aachen (Germany) | ||||
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| Notes | CIC | Approved | no | ||
| Call Number | CAT @ cat @ OtV2004 | Serial | 450 | ||
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