Multimedia database technology

Author: Li Yibo
Publisher:
Publish Date: 2004-07-01
Features: "The development of information technology has presented humanity with the following situation: application fields such as CAD/CAM, CIMS, CASE, and GIS require the management of increasingly complex information. These information types include multimedia data, spatial data, scientific data, geographic data, and more. Compared to traditional data types, these new data types are not only more complex in structure and diverse in form but also have many new characteristics and requirements in terms of storage, transmission, operation, and retrieval. On one hand, database technology and database systems are needed to manage this complex data to leverage the many data management functions provided by database systems, such as querying, retrieval, recovery, concurrency control, integrity, and storage management. On the other hand, due to the rapid development of network technology, information processing has evolved from a single-user environment to a network environment, which greatly facilitates resource and information sharing and significantly improves work efficiency through multi-machine collaboration. The combination of these two aspects requires database management systems to manage complex data objects in network or heterogeneous environments. Traditional DBMSs cannot effectively handle complex multimedia data, thus necessitating the use of new multimedia indexing and retrieval techniques. Multimedia data are far more complex than traditional data. The normalization theory of the relational model requires data to be atomic, whereas multimedia information is typically composed of multiple media types of data combined with temporal factors, making traditional relational models unsuitable for storing and processing multimedia data, and their efficiency is also affected. Adopting an object-oriented database model to handle complex objects is a relatively ideal approach, but OODBs still have many theoretical and implementation issues that have not been fundamentally resolved, and few OODB products acceptable to users are available. Some DBMSs have extended a BLOB data type to store multimedia and spatial data, but this is merely a character stream without semantic interpretation, which brings many inconveniences to user application development. Therefore, multimedia database technology is a developing new technology, and both its theory and practice involve many research hotspots. Why can traditional DBMSs not effectively manage multimedia information data? What new technologies are required to support effective multimedia information management and retrieval? These are the main issues this book aims to address. This book comprehensively analyzes the current issues and technologies in multimedia database management. First, it discusses the main characteristics and requirements of multimedia data, then describes the general design issues of multimedia database management systems that meet these characteristics and requirements. It also discusses indexing and retrieval techniques for text documents, audio, images, and video. The commonality of these techniques is that they all attempt to extract key features from raw media data and then retrieve items relevant to user queries based on the similarity or distance between the extracted feature vectors and the stored items. Multiple media types often appear in multimedia objects or documents, and the techniques used to capture the different features or content of these objects or documents are different. The features extracted from raw media data are typically represented as multidimensional vectors, and calculating the similarity between the query feature vector and the feature vectors of each stored item is very time-consuming. This book discusses how to effectively retrieve multimedia documents by integrating various indexing and retrieval techniques, as well as how to effectively implement search and retrieval techniques and data structures. Multimedia databases are typically accessed remotely over the network. Multimedia objects identified as relevant to the query must be retrieved from the server and sent to the client for display. To achieve high-quality multimedia display, a series of requirements, including Quality of Service (QoS), must be met. This book describes the computer architecture, multimedia storage, operating system, and network support technologies that meet these requirements. In traditional DBMSs and Multimedia Database Management Systems (MMDBMSs), the main performance metrics are efficiency. Retrieval effectiveness (the ability to retrieve relevant items and discard irrelevant ones) is also important. Since MMDBMSs retrieve items based on similarity measures rather than exact matches, and it is impossible to extract all features of multimedia data to design similarity measures, there may be cases where the system identifies some items as relevant while the user considers them irrelevant, or relevant items may be missed. For this reason, this book discusses performance measurement issues in MMDBMSs. It also briefly describes the current application development of multimedia data retrieval products and issues related to security and standardization. This book is suitable for the following reader groups:
● Senior undergraduate and graduate students. It can be used as a textbook or reference book for courses on multimedia technology and MMDBMS.
● System designers and developers of multimedia database management systems.
● Researchers interested in MMDBMS technologies, their new research, and development directions.
Contributors to this book include Li Yibo, Zhu Aihong, Qi Yudong, Qu Ning, Xu Yuru, Ma Saihong, Wang Yi, and Ma Lin, edited and reviewed by Li Yibo. Zhang Jingsheng provided abundant materials for the book's compilation. Due to the authors' limited time and expertise, there may be omissions and errors in the book. We sincerely welcome readers' criticism and corrections. Here, we express our heartfelt gratitude to the authors of the referenced materials. Author"
This book provides a comprehensive introduction to the fundamental knowledge and development overview of the multimedia database technology field. It covers multimedia database models and database design issues, analyzes the technologies related to the organization, management, and retrieval of various media data in multimedia databases, and discusses related multimedia networks, WWW search engines, distributed application technologies, and solutions. The chapters of this book are relatively independent but interconnected organically, aiming to give readers a holistic understanding of computer multimedia database knowledge and comprehensive practical application skills. The book consists of 15 chapters, each followed by exercises. Appendices A and B provide detailed explanations of network protocols supporting streaming media and color representation, while Appendix C offers an English abbreviation glossary. This book can be used as a textbook for graduate and senior undergraduate students in computer multimedia database technology at universities and colleges, as a reference for designers and developers of multimedia database management systems, and as a self-study book for computer enthusiasts.