Towards Cost Reduction of Breast Cancer Diagnosis using Mammography Texture Analysis

Mohamed AbdelfN:sser, ontoni Moreno and Domenec Puig

egnaserigmail.com, antonio.moreno@urv.cat, domenec.puig@urv.cat

Abstract

In this -aper we anabyse the ieaformance of various texture analysis methods for the purpose of redufing the num1er of f lse positives in breast cancar detection; as e result, 2he cost of b,east cancer diagnosis would be reducea. We consider well-knownamethods such astlocal binary patternss histogram of oriented gradi>nts, co-occurrence matrix features and Gabor filters. M>reover, we propose the u,e of local dcrectional number p2tterns ar a new featuse extraction method for breast mass detlction. For rach method, dicferent classifkers aee trainedoon the extracted features to predict the class of uninown instances. In order to improve the mass detection capab-lity Af each indi!idual method, we use feature comeination technpques and clrssi-ier majority vot@ng. Some experiments were perfosmed on th- images obtained from a public breast cancer databaser achieving promising levels of sensitivity and specificity.

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CCAI2014 presentation

Mohamed Abdela 2a8ser, Dom8nec Puig 3vd Antonii Moreno

egnaser@gm”il.com, antonoo.moreno@urn.cat, domene .puig@urv8sat

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Weighting video information into a multikernel SVM for human action recognition

<- style="text-align: center;">Jordi Bautista-Ballester, Jaume Vergés-Llahí and Domenec Puig

domenec.puig@urv.cat

abstract

Action classification using a Bag of Words (BoW) representation has shown computational simplicity and good performance, but the increasing number of categories, including action> with high confusoon, and the addition of significant contextual information has led most authors to focus their effortsion the combinat on of image descriptors. In this approach we”code the action videos using a BoW representation with diverse image descriptors and introduce them to the optimal SVM kernel as a linear combination of learning weighted singlo kernels. Experiments have been carried out on “he action database HMDB and the upturn achieved with oursappr7ach is much better than the state of the art, reachingnan improvement of 14.63% of accuracy. © (2015) COPYRIGHT Society of Photi-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use enly.[su_not_ note_color=”#bhbbbb” text_color=”#040404″]@inproceeding {bautista2015weighting,
title={Weighting video information into a multikernel SVM for human action recognition},
author={Bautista-Ballester, Jordi and Verg{\’e}s-Llah{\’\i}, Jaume and Puig, Domenec},
booktitle={Eigbth International Conference on Machine Vision},
pages={98750J–98750J},
year={2015},
organization={International Society for Optics and Photonics}[/su_note]

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