|
Records |
Links |
|
Author |
F. Javier Sanchez; Jordi Vitria |

|
|
Title |
ViLi + : Extended Lisp for image Processing and Computer Vision. |
Type |
Conference Article |
|
Year |
1994 |
Publication |
Progress in Image Analysis and Processing III |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
World Scientific |
Place of Publication |
|
Editor |
S.Impedovo |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
981-02-1552-5 |
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
MV;OR |
Approved |
no |
|
|
Call Number |
BCNPCL @ bcnpcl @ SaV1994; IAM @ iam @ SaV1994 |
Serial |
114 |
|
Permanent link to this record |
|
|
|
|
Author |
F.X. Perez; F. Javier Sanchez; Xavier Binefa; Xavier Roca; Jordi Vitria; Juan J. Villanueva |

|
|
Title |
A mathematical morphology-based system for IC´s inspection and analysis. |
Type |
Conference Article |
|
Year |
1993 |
Publication |
Institute of Physics Conferences Series |
Abbreviated Journal |
|
|
|
Volume |
135 |
Issue |
10 |
Pages |
381–384 |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
Bristol |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Institute of Physics |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
MV;;OR;ISE |
Approved |
no |
|
|
Call Number |
BCNPCL @ bcnpcl @ PSB1993; IAM @ iam @ PSB1993 |
Serial |
150 |
|
Permanent link to this record |
|
|
|
|
Author |
X. Binefa; F. Javier Sanchez; F.X. Perez; Xavier Roca; Jordi Vitria; Juan J. Villanueva |

|
|
Title |
Using defocus in optical inspection of integrated circuits |
Type |
Conference Article |
|
Year |
1993 |
Publication |
Institute of Physics Conferences Series |
Abbreviated Journal |
|
|
|
Volume |
135 |
Issue |
10 |
Pages |
389-392 |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
Bristol |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Institute of Physics |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
MV;OR;ISE |
Approved |
no |
|
|
Call Number |
BCNPCL @ bcnpcl @ BSP1993; IAM @ iam @ BSP1993 |
Serial |
151 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; Fernando Vilariño; F. Javier Sanchez |

|
|
Title |
Feature Detectors and Feature Descriptors: Where We Are Now |
Type |
Report |
|
Year |
2010 |
Publication |
CVC Technical Report |
Abbreviated Journal |
|
|
|
Volume |
154 |
Issue |
|
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
Feature Detection and Feature Description are clearly nowadays topics. Many Computer Vision applications rely on the use of several of these techniques in order to extract the most significant aspects of an image so they can help in some tasks such as image retrieval, image registration, object recognition, object categorization and texture classification, among others. In this paper we define what Feature Detection and Description are and then we present an extensive collection of several methods in order to show the different techniques that are being used right now. The aim of this report is to provide a glimpse of what is being used currently in these fields and to serve as a starting point for future endeavours. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
|
|
|
Notes |
MV; |
Approved |
no |
|
|
Call Number |
Admin @ si @ BVS2010; IAM @ iam @ BVS2010 |
Serial |
1348 |
|
Permanent link to this record |
|
|
|
|
Author |
Jose Seabra; F. Javier Sanchez; Francesco Ciompi; Petia Radeva |


|
|
Title |
Ultrasonographic Plaque Characterization using a Rayleigh Mixture Model |
Type |
Conference Article |
|
Year |
2010 |
Publication |
7th IEEE International Symposium on Biomedical Imaging |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
1–4 |
|
|
Keywords |
|
|
|
Abstract |
From Nano to Macro
A correct modelling of tissue morphology is determinant for the identification of vulnerable plaques. This paper aims at describing the plaque composition by means of a Rayleigh Mixture Model applied to ultrasonic data. The effectiveness of using a mixture of distributions is established through synthetic and real ultrasonic data samples. Furthermore, the proposed mixture model is used in a plaque classification problem in Intravascular Ultrasound (IVUS) images of coronary plaques. A classifier tested on a set of 67 in-vitro plaques, yields an overall accuracy of 86% and sensitivity of 92%, 94% and 82%, for fibrotic, calcified and lipidic tissues, respectively. These results strongly suggest that different plaques types can be distinguished by means of the coefficients and Rayleigh parameters of the mixture distribution. |
|
|
Address |
Rotterdam (Netherlands) |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1945-7928 |
ISBN |
978-1-4244-4125-9 |
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
ISBI |
|
|
Notes |
MILAB |
Approved |
no |
|
|
Call Number |
BCNPCL @ bcnpcl @ SSC2010 |
Serial |
1366 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |

|
|
Title |
Reduction of Pattern Search Area in Colonoscopy Images by Merging Non-Informative Regions |
Type |
Conference Article |
|
Year |
2010 |
Publication |
28th Congreso Anual de la Sociedad Española de Ingeniería Biomédica |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
One of the first usual steps in pattern recognition schemas is image segmentation, in order to reduce the dimensionality of the problem and manage smaller quantity of data. In our case as we are pursuing real-time colon cancer polyp detection, this step is crucial. In this paper we present a non-informative region estimation algorithm that will let us discard some parts of the image where we will not expect to find colon cancer polyps. The performance of our approach will be measured in terms of both non-informative areas elimination and polyps’ areas preserving. The results obtained show the importance of having correct non- informative region estimation in order to fasten the whole recognition process. |
|
|
Address |
Madrid (Spain) |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
CASEIB |
|
|
Notes |
MV |
Approved |
no |
|
|
Call Number |
Admin @ si @ BSV2010 |
Serial |
1469 |
|
Permanent link to this record |
|
|
|
|
Author |
F. Javier Sanchez; Jordi Vitria; Enric Marti |

|
|
Title |
Transformaciones Morfológicas de Polígonos Isotéticos |
Type |
Conference Article |
|
Year |
1991 |
Publication |
Primer Congreso Español de Informática Gráfica. |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
OR;IAM;MV |
Approved |
no |
|
|
Call Number |
IAM @ iam @ SVM1991 |
Serial |
1648 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Current Challenges on Polyp Detection in Colonoscopy Videos: From Region Segmentation to Region Classification. a Pattern Recognition-based Approach.ased Approach |
Type |
Conference Article |
|
Year |
2011 |
Publication |
2nd International Workshop on Medical Image Analysis and Descriptionfor Diagnosis Systems |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
62-71 |
|
|
Keywords |
Medical Imaging, Colonoscopy, Pattern Recognition, Segmentation, Polyp Detection, Region Description, Machine Learning, Real-time. |
|
|
Abstract |
In this paper we present our approach on real-time polyp detection in colonoscopy videos. Our method consists of three stages: Image Segmentation, Region Description and Image Classification. Taking into account the constraints of our project, we introduce our segmentation system that is based on the model of appearance of the polyp that we have defined after observing real videos from colonoscopy processes. The output of this stage will ideally be a low number of regions of which one of them should cover the whole polyp region (if there is one in the image). This regions will be described in terms of features and, as a result of a machine learning schema, classified based on the values that they have for the several features that we will use on their description. Although we are still on the early stages of the project, we present some preliminary segmentation results that indicates that we are going in a good direction. |
|
|
Address |
Rome, Italy |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SciTePress |
Place of Publication |
|
Editor |
Djemal, Khalifa |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
MIAD |
|
|
Notes |
MV; |
Approved |
no |
|
|
Call Number |
IAM @ iam @ BSV2011a |
Serial |
1695 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
A Region Segmentation Method for Colonoscopy Images Using a Model of Polyp Appearance |
Type |
Conference Article |
|
Year |
2011 |
Publication |
5th Iberian Conference on Pattern Recognition and Image Analysis |
Abbreviated Journal |
|
|
|
Volume |
6669 |
Issue |
|
Pages |
134-143 |
|
|
Keywords |
Colonoscopy, Polyp Detection, Region Merging, Region Segmentation. |
|
|
Abstract |
This work aims at the segmentation of colonoscopy images into a minimum number of informative regions. Our method performs in a way such, if a polyp is present in the image, it will be exclusively and totally contained in a single region. This result can be used in later stages to classify regions as polyp-containing candidates. The output of the algorithm also defines which regions can be considered as non-informative. The algorithm starts with a high number of initial regions and merges them taking into account the model of polyp appearance obtained from available data. The results show that our segmentations of polyp regions are more accurate than state-of-the-art methods. |
|
|
Address |
Las Palmas de Gran Canaria, June 2011 |
|
|
Corporate Author |
SpringerLink |
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
Vitrià, Jordi and Sanches, João and Hernández, Mario |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
LNCS |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-3-642-21256-7 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
IbPRIA |
|
|
Notes |
MV; |
Approved |
no |
|
|
Call Number |
IAM @ iam @ BSV2011c |
Serial |
1696 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; Fernando Vilariño; F. Javier Sanchez |



|
|
Title |
Towards Intelligent Systems for Colonoscopy |
Type |
Book Chapter |
|
Year |
2011 |
Publication |
Colonoscopy |
Abbreviated Journal |
|
|
|
Volume |
1 |
Issue |
|
Pages |
257-282 |
|
|
Keywords |
|
|
|
Abstract |
In this chapter we present tools that can be used to build intelligent systems for colonoscopy.
The idea is, by using methods based on computer vision and artificial intelligence, add significant value to the colonoscopy procedure. Intelligent systems are being used to assist in other medical interventions |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Intech |
Place of Publication |
|
Editor |
Paul Miskovitz |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-953-307-568-6 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
|
|
|
Notes |
MV; |
Approved |
no |
|
|
Call Number |
IAM @ iam @ BVS2011 |
Serial |
1697 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Integration of Valley Orientation Distribution for Polyp Region Identification in Colonoscopy |
Type |
Conference Article |
|
Year |
2011 |
Publication |
In MICCAI 2011 Workshop on Computational and Clinical Applications in Abdominal Imaging |
Abbreviated Journal |
|
|
|
Volume |
6668 |
Issue |
|
Pages |
76-83 |
|
|
Keywords |
|
|
|
Abstract |
This work presents a region descriptor based on the integration of the information that the depth of valleys image provides. The depth of valleys image is based on the presence of intensity valleys around polyps due to the image acquisition. Our proposed method consists of defining, for each point, a series of radial sectors around it and then accumulates the maxima of the depth of valleys image only if the orientation of the intensity valley coincides with the orientation of the sector above. We apply our descriptor to a prior segmentation of the images and we present promising results on polyp detection, outperforming other approaches that also integrate depth of valleys information. |
|
|
Address |
Toronto, Canada |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer Link |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
ABI |
|
|
Notes |
MV |
Approved |
no |
|
|
Call Number |
IAM @ iam @ BSV2011d |
Serial |
1698 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Depth of Valleys Accumulation Algorithm for Object Detection |
Type |
Conference Article |
|
Year |
2011 |
Publication |
14th Congrès Català en Intel·ligencia Artificial |
Abbreviated Journal |
|
|
|
Volume |
1 |
Issue |
1 |
Pages |
71-80 |
|
|
Keywords |
Object Recognition, Object Region Identification, Image Analysis, Image Processing |
|
|
Abstract |
This work aims at detecting in which regions the objects in the image are by using information about the intensity of valleys, which appear to surround ob- jects in images where the source of light is in the line of direction than the camera. We present our depth of valleys accumulation method, which consists of two stages: first, the definition of the depth of valleys image which combines the output of a ridges and valleys detector with the morphological gradient to measure how deep is a point inside a valley and second, an algorithm that denotes points of the image as interior to objects those which are inside complete or incomplete boundaries in the depth of valleys image. To evaluate the performance of our method we have tested it on several application domains. Our results on object region identification are promising, specially in the field of polyp detection in colonoscopy videos, and we also show its applicability in different areas. |
|
|
Address |
Lleida |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-1-60750-841-0 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
CCIA |
|
|
Notes |
MV |
Approved |
no |
|
|
Call Number |
IAM @ iam @ BSV2011b |
Serial |
1699 |
|
Permanent link to this record |
|
|
|
|
Author |
Sergio Vera; Debora Gil; Agnes Borras; F. Javier Sanchez; Frederic Perez; Marius G. Linguraru ; Miguel A. Gonzalez Ballester |


|
|
Title |
Computation and Evaluation of Medial Surfaces for Shape Representation of Abdominal Organs |
Type |
Book Chapter |
|
Year |
2012 |
Publication |
Workshop on Computational and Clinical Applications in Abdominal Imaging |
Abbreviated Journal |
|
|
|
Volume |
7029 |
Issue |
|
Pages |
223–230 |
|
|
Keywords |
medial manifolds, abdomen. |
|
|
Abstract |
Medial representations are powerful tools for describing and parameterizing the volumetric shape of anatomical structures. Existing methods show excellent results when applied to 2D
objects, but their quality drops across dimensions. This paper contributes to the computation of medial manifolds in two aspects. First, we provide a standard scheme for the computation of medial
manifolds that avoid degenerated medial axis segments; second, we introduce an energy based method which performs independently of the dimension. We evaluate quantitatively the performance of our
method with respect to existing approaches, by applying them to synthetic shapes of known medial geometry. Finally, we show results on shape representation of multiple abdominal organs,
exploring the use of medial manifolds for the representation of multi-organ relations. |
|
|
Address |
Toronto; Canada; |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer Link |
Place of Publication |
Berlin |
Editor |
H. Yoshida et al |
|
|
Language |
English |
Summary Language |
English |
Original Title  |
|
|
|
Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
LNCS |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0302-9743 |
ISBN |
978-3-642-28556-1 |
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
ABDI |
|
|
Notes |
IAM;MV |
Approved |
no |
|
|
Call Number |
IAM @ iam @ VGB2012 |
Serial |
1834 |
|
Permanent link to this record |
|
|
|
|
Author |
Carles Sanchez;F. Javier Sanchez; Antoni Rosell; Debora Gil |



|
|
Title |
An illumination model of the trachea appearance in videobronchoscopy images |
Type |
Book Chapter |
|
Year |
2012 |
Publication |
Image Analysis and Recognition |
Abbreviated Journal |
LNCS |
|
|
Volume |
7325 |
Issue |
|
Pages |
313-320 |
|
|
Keywords |
Bronchoscopy, tracheal ring, stenosis assesment, trachea appearance model, segmentation |
|
|
Abstract |
Videobronchoscopy is a medical imaging technique that allows interactive navigation inside the respiratory pathways. This imaging modality provides realistic images and allows non-invasive minimal intervention procedures. Tracheal procedures are routinary interventions that require assessment of the percentage of obstructed pathway for injury (stenosis) detection. Visual assessment in videobronchoscopic sequences requires high expertise of trachea anatomy and is prone to human error.
This paper introduces an automatic method for the estimation of steneosed trachea percentage reduction in videobronchoscopic images. We look for tracheal rings , whose deformation determines the degree of obstruction. For ring extraction , we present a ring detector based on an illumination and appearance model. This model allows us to parametrise the ring detection. Finally, we can infer optimal estimation parameters for any video resolution. |
|
|
Address |
Aveiro, Portugal |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer Berlin Heidelberg |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
LNCS |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0302-9743 |
ISBN |
978-3-642-31297-7 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
ICIAR |
|
|
Notes |
MV;IAM |
Approved |
no |
|
|
Call Number |
IAM @ iam @ SSR2012 |
Serial |
1898 |
|
Permanent link to this record |
|
|
|
|
Author |
Carles Sanchez; Jorge Bernal; Debora Gil; F. Javier Sanchez |


|
|
Title |
On-line lumen centre detection in gastrointestinal and respiratory endoscopy |
Type |
Conference Article |
|
Year |
2013 |
Publication |
Second International Workshop Clinical Image-Based Procedures |
Abbreviated Journal |
|
|
|
Volume |
8361 |
Issue |
|
Pages |
31-38 |
|
|
Keywords |
Lumen centre detection; Bronchoscopy; Colonoscopy |
|
|
Abstract |
We present in this paper a novel lumen centre detection for gastrointestinal and respiratory endoscopic images. The proposed method is based on the appearance and geometry of the lumen, which we defined as the darkest image region which centre is a hub of image gradients. Experimental results validated on the first public annotated gastro-respiratory database prove the reliability of the method for a wide range of images (with precision over 95 %). |
|
|
Address |
Nagoya; Japan; September 2013 |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer International Publishing |
Place of Publication |
|
Editor |
Erdt, Marius and Linguraru, Marius George and Oyarzun Laura, Cristina and Shekhar, Raj and Wesarg, Stefan and González Ballester, Miguel Angel and Drechsler, Klaus |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
LNCS |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-3-319-05665-4 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
CLIP |
|
|
Notes |
MV; IAM; 600.047; 600.044; 600.060 |
Approved |
no |
|
|
Call Number |
Admin @ si @ SBG2013 |
Serial |
2302 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Impact of Image Preprocessing Methods on Polyp Localization in Colonoscopy Frames |
Type |
Conference Article |
|
Year |
2013 |
Publication |
35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society |
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
7350 - 7354 |
|
|
Keywords |
|
|
|
Abstract |
In this paper we present our image preprocessing methods as a key part of our automatic polyp localization scheme. These methods are used to assess the impact of different endoluminal scene elements when characterizing polyps. More precisely we tackle the influence of specular highlights, blood vessels and black mask surrounding the scene. Experimental results prove that the appropriate handling of these elements leads to a great improvement in polyp localization results. |
|
|
Address |
Osaka; Japan; July 2013 |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1557-170X |
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
EMBC |
|
|
Notes |
MV; 600.047; 600.060 |
Approved |
no |
|
|
Call Number |
Admin @ si @ BSV2013 |
Serial |
2286 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Towards Automatic Polyp Detection with a Polyp Appearance Model |
Type |
Journal Article |
|
Year |
2012 |
Publication |
Pattern Recognition |
Abbreviated Journal |
PR |
|
|
Volume |
45 |
Issue |
9 |
Pages |
3166-3182 |
|
|
Keywords |
Colonoscopy,PolypDetection,RegionSegmentation,SA-DOVA descriptot |
|
|
Abstract |
This work aims at the automatic polyp detection by using a model of polyp appearance in the context of the analysis of colonoscopy videos. Our method consists of three stages: region segmentation, region description and region classification. The performance of our region segmentation method guarantees that if a polyp is present in the image, it will be exclusively and totally contained in a single region. The output of the algorithm also defines which regions can be considered as non-informative. We define as our region descriptor the novel Sector Accumulation-Depth of Valleys Accumulation (SA-DOVA), which provides a necessary but not sufficient condition for the polyp presence. Finally, we classify our segmented regions according to the maximal values of the SA-DOVA descriptor. Our preliminary classification results are promising, especially when classifying those parts of the image that do not contain a polyp inside. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Elsevier |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0031-3203 |
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
IbPRIA |
|
|
Notes |
MV |
Approved |
no |
|
|
Call Number |
Admin @ si @ BSV2012; IAM @ iam |
Serial |
1997 |
|
Permanent link to this record |
|
|
|
|
Author |
Sergio Vera; Debora Gil; Agnes Borras; F. Javier Sanchez; Frederic Perez; Marius G. Linguraru |

|
|
Title |
Computation and Evaluation of Medial Surfaces for Shape Representation of Abdominal Organs |
Type |
Conference Article |
|
Year |
2011 |
Publication |
Workshop on Computational and Clinical Applications in Abdominal Imaging |
Abbreviated Journal |
|
|
|
Volume |
7029 |
Issue |
|
Pages |
223-230 |
|
|
Keywords |
|
|
|
Abstract |
Medial representations are powerful tools for describing and parameterizing the volumetric shape of anatomical structures. Existing methods show excellent results when applied to 2D objects, but their quality drops across dimensions. This paper contributes to the computation of medial manifolds in two aspects. First, we provide a standard scheme for the computation of medial manifolds that avoid degenerated medial axis segments; second, we introduce an energy based method which performs independently of the dimension. We evaluate quantitatively the performance of our method with respect to existing approaches, by applying them to synthetic shapes of known medial geometry. Finally, we show results on shape representation of multiple abdominal organs, exploring the use of medial manifolds for the representation of multi-organ relations. |
|
|
Address |
Nice, France |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer Berlin Heidelberg |
Place of Publication |
|
Editor |
In H. Yoshida et al |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
ABDI |
|
|
Notes |
IAM; MV |
Approved |
no |
|
|
Call Number |
VGB2011 |
Serial |
2036 |
|
Permanent link to this record |
|
|
|
|
Author |
Carles Sanchez; Debora Gil; Antoni Rosell; Albert Andaluz; F. Javier Sanchez |


|
|
Title |
Segmentation of Tracheal Rings in Videobronchoscopy combining Geometry and Appearance |
Type |
Conference Article |
|
Year |
2013 |
Publication |
Proceedings of the International Conference on Computer Vision Theory and Applications |
Abbreviated Journal |
|
|
|
Volume |
1 |
Issue |
|
Pages |
153--161 |
|
|
Keywords |
Video-bronchoscopy, tracheal ring segmentation, trachea geometric and appearance model |
|
|
Abstract |
Videobronchoscopy is a medical imaging technique that allows interactive navigation inside the respiratory pathways and minimal invasive interventions. Tracheal procedures are ordinary interventions that require measurement of the percentage of obstructed pathway for injury (stenosis) assessment. Visual assessment of stenosis in videobronchoscopic sequences requires high expertise of trachea anatomy and is prone to human error. Accurate detection of tracheal rings is the basis for automated estimation of the size of stenosed trachea. Processing of videobronchoscopic images acquired at the operating room is a challenging task due to the wide range of artifacts and acquisition conditions. We present a model of the geometric-appearance of tracheal rings for its detection in videobronchoscopic videos. Experiments on sequences acquired at the operating room, show a performance close to inter-observer variability |
|
|
Address |
Barcelona; February 2013 |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SciTePress |
Place of Publication |
Portugal |
Editor |
Sebastiano Battiato and José Braz |
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
LNCS |
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-989-8565-47-1 |
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
VISAPP |
|
|
Notes |
IAM;MV; 600.044; 600.047; 600.060; 605.203 |
Approved |
no |
|
|
Call Number |
IAM @ iam @ SGR2013 |
Serial |
2123 |
|
Permanent link to this record |
|
|
|
|
Author |
Joan M. Nuñez; Jorge Bernal; F. Javier Sanchez; Fernando Vilariño |


|
|
Title |
Blood Vessel Characterization in Colonoscopy Images to Improve Polyp Localization |
Type |
Conference Article |
|
Year |
2013 |
Publication |
Proceedings of the International Conference on Computer Vision Theory and Applications |
Abbreviated Journal |
|
|
|
Volume |
1 |
Issue |
|
Pages |
162-171 |
|
|
Keywords |
Colonoscopy; Blood vessel; Linear features; Valley detection |
|
|
Abstract |
This paper presents an approach to mitigate the contribution of blood vessels to the energy image used at different tasks of automatic colonoscopy image analysis. This goal is achieved by introducing a characterization of endoluminal scene objects which allows us to differentiate between the trace of 2-dimensional visual objects,such as vessels, and shades from 3-dimensional visual objects, such as folds. The proposed characterization is based on the influence that the object shape has in the resulting visual feature, and it leads to the development of a blood vessel attenuation algorithm. A database consisting of manually labelled masks was built in order to test the performance of our method, which shows an encouraging success in blood vessel mitigation while keeping other structures intact. Moreover, by extending our method to the only available polyp localization
algorithm tested on a public database, blood vessel mitigation proved to have a positive influence on the overall performance. |
|
|
Address |
Barcelona; February 2013 |
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
SciTePress |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
800 |
Expedition |
|
Conference |
VISIGRAPP |
|
|
Notes |
MV; 600.054; 600.057 |
Approved |
no |
|
|
Call Number |
IAM @ iam @ NBS2013 |
Serial |
2198 |
|
Permanent link to this record |
|
|
|
|
Author |
Onur Ferhat; Fernando Vilariño; F. Javier Sanchez |

|
|
Title |
A cheap portable eye-tracker solution for common setups. |
Type |
Journal Article |
|
Year |
2014 |
Publication |
Journal of Eye Movement Research |
Abbreviated Journal |
JEMR |
|
|
Volume |
7 |
Issue |
3 |
Pages |
1-10 |
|
|
Keywords |
|
|
|
Abstract |
We analyze the feasibility of a cheap eye-tracker where the hardware consists of a single webcam and a Raspberry Pi device. Our aim is to discover the limits of such a system and to see whether it provides an acceptable performance. We base our work on the open source Opengazer (Zielinski, 2013) and we propose several improvements to create a robust, real-time system which can work on a computer with 30Hz sampling rate. After assessing the accuracy of our eye-tracker in elaborated experiments involving 12 subjects under 4 different system setups, we install it on a Raspberry Pi to create a portable stand-alone eye-tracker which achieves 1.42° horizontal accuracy with 3Hz refresh rate for a building cost of 70 Euros. |
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title  |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
no |
|
|
Call Number |
Admin @ si @ FVS2014 |
Serial |
2435 |
|
Permanent link to this record |
|
|
|
|
Author |
Jorge Bernal; Fernando Vilariño; F. Javier Sanchez; M. Arnold; Anarta Ghosh; Gerard Lacey |


|
|
Title |
Experts vs Novices: Applying Eye-tracking Methodologies in Colonoscopy Video Screening for Polyp Search |
Type |
Conference Article |
|
Year |
2014 |
Publication |
2014 Symposium on Eye Tracking Research and Applications |
|