Juan-Roberto Jiménez

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Platforms based on OpenGL ES 2.0 such as mobile devices and WebGL have recently being used to render 3D volumetric models. However, the texture storage limitations of these platforms cause that only low-resolution models can be visualized. This paper describes a novel technique that overcomes these limitations and allows us to render detailed high(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 advantages of optical transparency are still confined to the boundaries of a domain, since the optical signals are subject to O/E/O conversions at the border nodes that separate two optical domains. The extension of transparent connections across domains requires advances both in the modeling of the impairments suffered by the optical signals as well as(More)
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)
This publication has been included here just to facilitate downloads to those people asking for personal use copies. This material may be published at copyrighted journals or conference proceedings, so personal use of the download is required. In particular, publications from IEEE have to be downloaded according to the following IEEE note: c 2007 IEEE.(More)
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