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What is Multimedia Data

Chapter 37

Handbook of Research on Digital Libraries: Design, Development, and Impact

Sources in form of text, video, image, maps, or sound.

Published in Chapter:

Towards Multimedia Digital Libraries

Cláudio de Souza Baptista (University of Campina Grande, Brazil) and Ulrich Schiel (University of Campina Grande, Brazil)

Source Title: Handbook of Research on Digital Libraries: Design, Development, and Impact

DOI: 10.4018/978-1-59904-879-6.ch037

Abstract

A multimedia digital library copes with the storage and retrieval of resources of different media such as video, audio, maps, images, and text documents. The main improvement with regard to textual digital libraries is the possibility of retrieving documents in different media combining metadata and content analysis. Content-based Indexing and Retrieval is a complex and ongoing research field with specific problem statements for each media. A prototype of a multimedia digital library is presented.

Full Text Chapter Download: US $37.50 Add to Cart

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Chapter 45

Multimedia data refers to data that consist of various media types like text, audio, video, and animation.

Published in Chapter: Multicast of Multimedia Data; From: Encyclopedia of Internet Technologies and Applications

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Chapter 24

Different, basic data types: text, images, audio, video, etc., are typically the elements for the building blocks of the generalized multimedia environments, platforms, or integrating tools. They comprise of ASCII based text data, typically stored in processor files, spreadsheets, databases and annotations on more general multimedia objects. With availability and proliferation of GUIs, text fonts the job of storing text is becoming complex allowing special effects (color, shades, etc.). For image or picture data, there is great variance in the quality and size of storage for still images. Digitalized images are sequence of pixels that represents a region in the user's graphical display. The space overhead for still images varies on the basis of resolution, size, complexity, and compression scheme used to store image. The popular image formats are jpg, png, bmp, tiff. An increasingly popular datatype being integrated in most of applications is audio as it is quite space intensive. One minute of sound can take up to 2-3 Mbs of space. Several techniques are used to compress it in suitable format. One on the most space consuming multimedia data type is digitalized video. The digitalized videos are stored as sequence of frames. Depending upon its resolution and size a single frame can consume upto 1 MB. Also to have realistic video playback, the transmission, compression, and decompression of digitalized require continuous transfer rate. These days, in the age of 3D movies we have graphic objects a data type as well. This consists of special data structures used to define 2D and 3D shapes through which we can define multimedia objects. These include various formats used by image, video editing applications. Examples are CAD / CAM objects.

Published in Chapter: Watermarking of Data Using Biometrics; From: Handbook of Research on Computational Intelligence for Engineering, Science, and Business

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Chapter 343