Design methodologies and modeling of reconfigurable computing and multilayer access control

提出的研究方案由以下两个研究项目组成：1.应用于混合视频编解码器的可重构计算设计方法。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要求。它为构建性能更高、功耗更低、可编程性更高的片上系统(SoC)提供了一个很好的平台。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体系结构，该架构能够根据不同的视频压缩标准(MPEG2、MPEG4和H.264)将视频编码(解码)为多种格式。研究将在三个不同的层面进行：系统设计层面的算法和流程分析，体系结构层面的软硬件协同设计，以及逻辑电路层面的可重构电路设计。2.针对MPEG7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很大，可能包含隐私、敏感或其他限制性信息。根据访问权限和需要，用户可以允许访问文档的某些部分(S)。我们将为包括数字图书馆、电子教育和多媒体娱乐在内的各种MPEG7多媒体应用开发一个通用的多层访问控制模型，以便相同的模型可以集成到所有现有的访问控制系统中。该模型将与MPEG7标准的主要特征相结合，以实现高效和有效的安全多层接入控制。

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.