Editing and Description Framework for Video Objects

• Type: Thesis
• Date: 2004

Authors

Luis F. Teixeira (Author) FEUP; Luís Corte-Real (Technical adviser) FEUP

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Associated Institutions

FEUP - Faculdade de Engenharia da Universidade do Porto

Other information

Abstract (EN): The way humankind has recorded its knowledge has changed dramatically. Today, incredibly small devices can store hundreds of books or pictures, hours of speech, music or video. Digital information has reached all types of expression and, above all, it acquired important properties: portability, mobility and ubiquity. Despite this promising scenario, some obstacles have made its concretization a difficult task. The myriad of formats and technologies used to encode information not always allows a real convergence. To face this problem, the Moving Picture Experts Group (MPEG) specified a technology that allows the composition and delivery of interactive multimedia content at variable bit rates over high and low bandwidth connections - the MPEG-4 standard. In other words, a technology that aggregates all types of information in a rich-content format which can be delivered everywhere. Audiovisual content is created at an increasingly fast pace. These sources of information also have an increasing need for processing. Nevertheless, the information that can not be found is not of much use. Alternate representations that allow some kind of interpretation about the meaning of this information are therefore required. For that purpose, the MPEG-7 standard defines the syntax and semantics for the description of multimedia content. Although both standards are relatively recent, its acceptance has not reached the initial expectations. It is believed that any multimedia technology can only be successful if it reaches both ends of the chain - authors and consumers. To accomplish this objective, tools that can satisfy its users demands are needed. This has not yet happened for MPEG-4 and, inherently, for MPEG-7. This dissertation addresses this need, proposing a specification for a modular, flexible and scalable authoring framework for multimedia, supporting both standards. A prototype has also been implemented to assert this specification. It consists of a multimedia composition tool, a storage and delivery server and a client application.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 143