Juan-Roberto Jiménez

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This paper proposes and compares several methods for interactive volume rendering in mobile devices. This kind of devices has several restrictions and limitations both in performance and in storage capacity. The paper reviews the suitability of some existing direct volume rendering methods, and proposes a novel approach that takes advantage of the graphics(More)
Global illumination in dynamic participating media is expensive, but in many applications interactivity is required. We use selective photon tracing to compute global illumination, which enables us to update mostly those photon paths that are affected by changes in the media. We enhance this technique by eliminating the need of shooting corrective photons,(More)
Volume rendering has been a relevant topic in scientific visualization for the last decades. However, the exploration of reasonably big volume datasets requires considerable computing power, which has limited this field to the desktop scenario. But the recent advances in mobile graphics hardware have motivated the research community to overcome these(More)
The European Integrated Project GEYSERS - Generalised Architecture for Dynamic Infrastructure Services - is concentrating on infrastructures incorporating integrated optical network and IT resources in support of the Future Internet with special emphasis on cloud computing. More specifically GEYSERS proposes the concept of Virtual Infrastructures over one(More)
Although new graphics hardware has accelerated the rendering process, the realistic simulation of scenes including participating media remains a difficult problem. Interactive results have been achieved for isotropic media as well as for single scattering. In this paper, we present an interactive global illumination algorithm for the simulation of scenes(More)
Camouflage is the mixture of resources, design or information for camouflage, either by making animals or objects tough to see or by hiding them. Camouflage follows human perception instinct to create digital camouflage images and complies with the physical creation procedure of the artist. The very first job of proposed system is creation of camouflaged(More)
The Constrained Application Protocol, CoAP, and related extensions are intended to support machine-to-machine communication in systems where one or more nodes are resource constrained, in particular for low power wireless sensor networks. This document defines publishsubscribe and message queuing functionality for CoAP that extends the capabilities for(More)
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