Germán Capdehourat

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In this paper we propose a machine learning approach to classify melanocytic lesions as malignant or benign, using dermoscopic images. The lesion features used in the classification framework are inspired on border, texture, color and structures used in popular dermoscopy algorithms performed by clinicians by visual inspection. The main weakness of(More)
Cutaneous Melanoma  The result of malignant transformation of melanocytes.  3 rd most frequent skin cancer in the world, 1 st as mortal cause.  Cancer with highest growth of incidence rate in the world.  Mortality rate has not gone down even though several expensive therapies were used for diagnosis and treatment. Only way to significantly reduce(More)
We developed an EBGM-based algorithm that successfully implements face recognition under constrained conditions. A suitable adaptation of the Gabor filters was found through a power spectral analisys (PSD) of the face images. We outperformed the best-known implementations of the EBGM algorithm in the FERET database. The results are comparable with those of(More)
—Wireless Mesh Networks (WMNS) have emerged in the last years as a cost-efficient alternative to traditional wired access networks. In order to fully exploit the intrinsically scarce resources WMNS possess, the use of dynamic routing has been proposed. We argue instead in favour of separating routing from forwarding (i.e. ` a la MPLS) and implementing a(More)
During the last decade we have seen an explosive growth in the deployment of wireless networks in unlicensed frequency bands, mainly driven by the great success of the IEEE 802.11 standard. In addition to its traditional last-hop usage, it has also been widely employed for Internet access infrastructure such as wireless mesh networks (WMNs). A problem that(More)
In wireless networks, the physical medium is the cause of most of the errors and performance drops. Thus, an efficient predictive estimation of wireless networks performance w.r.t. medium status by the communication peers would be a leap ahead in the improvement of wireless communication. For that purpose, we designed a measurement bench that allows us to(More)
—In recent years we have seen the success of wireless communications in unlicensed frequency bands, mainly driven by the 802.11 standard. The clear trend in the growth of traffic demand suggest that spectrum scarcity will be a serious threat to reach the capacity needs in the near future. Looking for more available spectrum, regulators have already begun to(More)
Over the last years the 1:1 educational model has been gaining importance within different regions of the world. In this respect, the Uruguayan Plan Ceibal has been a pioneer, beginning its deployment in 2007 and being the only one so far with national scope. Within this context, the present work describes the wireless network deployed by Plan Ceibal. The(More)