Multilevel Presentation and Query Processing in Multimedia Database Systems

多媒体数据库系统中的多级表示和查询处理

• 批准号: 9619812
• 负责人: Arif Ghafoor
• 金额: $ 32.69万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9619812&HistoricalAwards=false
• 关键词: Multilevel; Presentation; Query; Processing; Multimedia

The goal of this project is to develop a multimedia database management system with enhanced capabilities to handle heterogeneous monomedia queries and data. The development of this system caters to the computational and storage requirements while accommodating and exploiting the inevitable semantic and representational imprecisions inherent in such media. The underlying design philosophy of this system is based on multilevel data models and search mechanisms. These methodologies are designed to facilitate for the users the posing of various types of queries. These query types include the following: (1) low-level queries, such as finding objects in a multimedia database; (2) mid-level queries based on spatio-temporal semantics, such as locating events associated with multimedia data; and (3) high-level queries targeted towards searching pre-composed multimedia documents, based on constituent monomedia data, their spatio-temporal dimensions, and logical structure. The multi-level search mechanisms are tightly interlinked. Imprecision in the search results is modeled using a set of fuzzy parameters. The results of this research will provide a comprehensive framework for building wide variety of multimedia applications in commercial, educational, governmental and military sectors.

该项目的目标是开发一个多媒体数据库管理系统，该系统具有处理异构单媒体查询和数据的增强功能。该系统的开发满足了计算和存储要求，同时适应和利用了此类媒体固有的不可避免的语义和表示不精确性。该系统的底层设计理念是基于多级数据模型和搜索机制。这些方法旨在方便用户提出各种类型的查询。这些查询类型包括以下几种： (1)低级查询，例如在多媒体数据库中查找对象； (2)基于时空语义的中级查询，例如定位与多媒体数据相关的事件； (3)基于组成的单一媒体数据、它们的时空维度和逻辑结构，针对搜索预先组合的多媒体文档的高级查询。多级搜索机制紧密相连。使用一组模糊参数对搜索结果的不精确性进行建模。这项研究的结果将为在商业、教育、政府和军事部门构建各种多媒体应用提供一个全面的框架。