Computational Science and Its Applications - ICCSA 2006: by Pinaki Mitra, Chitrita Chaudhuri (auth.), Marina L.

By Pinaki Mitra, Chitrita Chaudhuri (auth.), Marina L. Gavrilova, Osvaldo Gervasi, Vipin Kumar, C. J. Kenneth Tan, David Taniar, Antonio Laganá, Youngsong Mun, Hyunseung Choo (eds.)

This ?ve-volume set was once compiled following the 2006 foreign convention on Computational technology and its purposes, ICCSA 2006, held in Glasgow, united kingdom, in the course of may well 8–11, 2006. It represents the exceptional selection of virtually 664 refereed papers chosen from over 2,450 submissions to ICCSA 2006. Computational technological know-how has ?rmly demonstrated itself as an essential component of many scienti?c investigations, a?ecting researchers and practitioners in parts starting from purposes comparable to aerospace and automobile, to rising applied sciences resembling bioinformatics and nanotechnologies, to middle disciplines akin to ma- ematics, physics, and chemistry. as a result of shear dimension of many demanding situations in computational technological know-how, using supercomputing, parallel processing, and - phisticated algorithms is inevitable and turns into part of basic theore- cal study in addition to endeavors in rising ?elds. jointly, those far-reaching scienti?c parts helped shape this convention within the geographical regions of state-- the-art computational technological know-how researchand functions, encompassing the fac- itating theoretical foundations and the cutting edge functions of such leads to different areas.

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Lim, and K. Kim However, previous studies, which have been carried out to support the real-time audio/video adaptation service in the ubiquitous computing environment, distributed environment, and mobile communication environment, have mostly used DirectShow, JMF API, and multimedia API for Brew[7-11]. These methods have the disadvantage that users are required to install specific tools to use them and they reqire high system specification according to the processing speed[12]. Also, the transcoders used for the QoS adaptation contain all the multimedia supporting functions in one library.

This work was supported by the Korea Reasearch Foundation Grant. (KRF-2004-005D00198). Corresponding author. M. Gavrilova et al. ): ICCSA 2006, LNCS 3981, pp. 28-39, 2006. © Springer-Verlag Berlin Heidelberg 2006 An Application-Independent Multimedia Adaptation Framework 29 Looking at this, it is clear that users will require multimedia services with PC level for the mobile web, so it is certain that efforts to develop technologies related to mobile devices, communication, various services and standardization will continue.

In most of studies and developments on the QoS from users’ viewpoint, characteristics of terminals, screen abilities(width per pixel, height per pixel, color, bit per pixel), display abilities(video/audio/image and each format), and network bandwidth are considered for media adaptation[15]. Therefore, in those cases, resolution, color, frame rate, bit rate and definite format including standards are used as parameters of QoS and a heavy transcoder such as mpeg4 is used to support them[16-20]. In those studies, since functions such as transcoding and playback are performed using a heavy transcoder, the adaptation ability for a new destination is not sufficient.

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