Design methodologies and modeling of reconfigurable computing and multilayer access control

本研究计划包括以下两个研究项目：1。可重构计算设计方法及其在混合视频编解码器中的应用。可重构计算能够将自身重写到不同的体系结构中，以满足特定的应用和性能需求。它提供了一个很好的平台来构建片上系统（SoC），要求更高的性能，低功耗，同时高度的可编程性。在这项研究中，我们将研究可重构计算的设计策略和方法，并将其应用于设计混合视频编解码器的可重构架构，该编解码器能够根据不同的视频压缩标准（MPEG-2，MPEG-4和H.264）将视频编码（解码）为多种格式。该研究将在三个不同的层次进行：算法和过程分析在系统设计层次，硬件-软件协同设计在体系结构层次，和可重构电路设计在逻辑电路层次。2. MPEG-7多媒体应用的多层访问控制建模。数字图书馆中的多媒体文档可能非常庞大，并且可能包含隐私、敏感或其他限制性信息。用户可以根据访问权限和需要允许访问文档的某些部分。我们将开发一个通用的多层访问控制模型的各种MPEG-7多媒体应用，包括数字图书馆，电子教育和多媒体娱乐，使相同的模型可以集成所有现有的访问控制系统。该模型将结合MPEG-7标准的主要特点，实现高效、安全的多层访问控制。

The proposed research program is comprised of the following two research projects: 1. Reconfigurable Computing Design Methodologies with Application to Hybrid Video Codec. The reconfigurable computing is able to re-write itself into different architectures in order to meet specific application and performance requirements. It provides an excellent platform to build system on chips (SoC) that require higher performance, low power dissipation and at the same time a high degree of programmability. In this research, we will investigate the design strategies and methodologies for reconfigurable computing and apply them to design reconfigurable architectures for hybrid video codec that is able to encode (decode) a video into (from) multiple formats according to different video compression standards (MPEG-2, MPEG-4 and H.264). The study will be conducted at three different levels: algorithm and process analysis at system design level, hardware-software co-design at the architecture level, and reconfigurable circuit design at the logic circuit level. 2. Multilayer Access Control Modeling for MPEG-7 Multimedia Applications. A multimedia document in a digital library could be huge and may contain private, sensitive or other restrictive information. A user may allow to access certain part(s) of the document depending access rights and needs. We will develop a generic multilayer access control model for various MPEG-7 multimedia applications including digital libraries, e-education, and multimedia entertainment such that the same model can be integrated by all existing access control systems. The proposed model will integrate with major features of the MPEG-7 standard to achieve efficient and effective secure multilayer access control.