14Digital Media Archival

Chong-Wah Ngo and Song Tan

14.1 Introduction

Digital media such as images and videos tell a story by showing millions of pixels in different patterns and at different snapshots of time. However, compared to the textual documents where every word could carry a semantic meaning, a pixel alone indicates intensity value. The absence of semantic structure and order in raw visual data makes the existing file and database systems designed for text indexing not applicable for multimedia data. As a result, the storage and management of digital media has long been an outstanding problem. For many commercial systems, very often the media are not indexed by visual content itself, but rather the surrounding meta data such as filenames, ...

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