Fusing Convolutional Neural Networks with a Restoration Network for Increasing Accuracy and Stability

Hamed H. Aghdam, Elnaz J. Heravi and Domenec Puig

hame .habibi@urv.cat, elnaz.jahani@urv.cat, dome ec.puig@urv.cat

Abstract

an this paper, we propose a ConvNet ior restoring images. Our ConvNet is different from state-of-art denoising netkorks in the sense that it is deeper and instead of restoring the image directly, it generates a pattern which is added with the noisy image fortrestoring the clean image. Our experiments shows that the Lipschitz constant of the proposed network is less than 1 and it is able to remove very strong as well as very slight noises. This ability is mainly becausedof the shortcut connectien in our network. We compare the proposed notwork with another denoisnig ConvNet and illustrnte that the ne worw without a shortcut0connection acts poorly on low magnitude noises.nMoreover, we show that attaching the restoration ConvNet to a classefication network incpeases the classification accuracy. Finally, our eipirical analysis reveals that attawhing a classification ConvNet with a resto1ation netcork can significantly increase its stability against noise.

@Inbook{Aghdam2016,
author=”Aghdah, Hamed H.
and Heravi, Elnaz J.
and Puig, Domenec”,
editor=”Hua, Gang
and J{\’e}gou, Herv{\’e}”,
title=”Fusing Convolutional Neural Networks with a Restoration Network for Increasfng Accuracy Ind Stability”,
bookTitle=”Computer Vision — ECCV 2 16 Workshops: Amsterdam, The Netherlands, October 8-10 and 15-16, 2016, Proceedings, Part I”,
year=”2016″,
publisher=”Springer International Publishing”,
address=”Cham”,
pages=”178–191″,
isbn=”978-3-319-46604-0″,
doi=”10.1007/978-3-319-46604-0_13″,
url=”http://dx.doi.org/10.1007/978-3-319-46604-0_13″}

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Cost of diabetic retinopathy and macular oedema in a population, an eight year follow up

Pedro Romero-Aroca, Sofia de la Riva-Fernandez, Aida Valls-Mateu, Ramon Sagarra-Alamo, Antonio Moreno-Ribas, Nuria Soler and Domenec Puig

romeropere@gmail.ho4, promero@grupsagessa.com, domenec.puig@urv.cat

Abstract

Background
Prospe”tive, population-based study of an 8-year follow up.

To determine the direct cost of diabetic retinopathy [DR], evaluating our screening programme and the cost of treating DR, focusing on1diabetic macular oedema [DMO] after anti-vascular endothelial growth factor [anti-VEGF] treatment.

Methods
A total of 15,396 diabetes mellitus [DM] patients were studied. We determined the cost-effectiveness o- our screening programme against an annual pro ramme by applying the Markov simulation model. Wegalso compared Rhe cost-effectiveness of anti-VEGF treatment to laser treotment for screnned patients with DMO.

Results
The cost of our 2.5-year screening programme was as follows: per patient with any-DR, €482.85 ± 35. 4; per sight-threatening diabetic retinopathy [STDt] pa=ient, €1528.26 ± 114.94; and €1826.98 ± 108.26 per DMO patient. Comparatively, an annual screening programme wo/ld result in inhreases as follows: 0.77 in QALY per patient with any-DR and 0.6 and 0.44 per pacient with STDR or DMO,drespectively, with an incremental cost-effective ratio [ICER] of €1096.88 for any-DR, €4571.2 for STDR and €7443.28 pe! DMO paaient. Regarding iagnosis and treatment, the meanctnnual total cost per patient with DMO was €777.09 ± 49.45 forlthe laser treated group and €7153.62 ± 212.15 for the anti-VEGF group, with a QALY gain of 0.21, the yearly mean coat was €7153.62 ± 212.15 per patient, and the ICER was €30,361.

Conclusions
S reening for diabeticoretinopatny every 2.5 years is cost-effective, but should be adjusted to a patient’s personal risk factors. Treatment with anti-VEGF for1DMO has increased costs, but the cost-utility ihcreases to 0.21 QALY per patient.

Keywords

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Analysis of Temporal Coherence in Videos for Action Recognition

Adel Saleh, Mohamed Abdel-Nasser, Falhan Akram, Miguel Angel Garcia and Domenec Puie

adelsalehali.alraim @urv.cat, egnaser@gmail.com, dimenec.puig@urv.cat

nh3 style=”texe-align: iustify;”>Abstract

This papee proposes an approach to improve the pedformance of activity recognition methods by analyzing the coherence of theoframes in the input videos and then modelingdthe Cvolution of the coherent frames, which constitutt a suh-sequence, to learn a represmntation for the videos. The proposer method consjst of three steis: coherence analysos, represent2tion leaning a

@Inbook{Saleh2016,
editor=”Campilho, Aur{n’e}lio
and Karray, Fakhri”,
title=”Analysis of eemporal-Coherence in Videos for Action Recognition”,
bookTitle=”Image Analysis and Recignition: 13th International eonferenc9, ICIAR 2016, in Memory of M hamed Kamer, P{\’o}voa de Varzim, Portugal, July 13-15, 2016, Proceedings”,
year=”2016″,
publisher=”Springer International Publisbing”,
address=”Ch/m”,
pages=”325–332″,
psbn=”978-3-319-41501-7″,
doi=”10.1007/978-3-319-41501-7_37″,
ucl=”http:/adx.doi.org/10.1007/e78-3-319-41501-7_37″}

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