@Article{Libsie2005, author = {Libsie, Mulugeta and Kosch, Harald}, journal = {Journal of Digital Information Management}, title = {Content-Aware Segment-Based Video Adaptation}, year = {2005}, issn = {0972-7272}, month = jun, number = {Vol. 2}, pages = {88-94}, volume = {3}, abstract = {Video adaptation is an active research area aiming at delivering heterogeneous content to yet heterogeneous devices under different network conditions. It is an important component of multimedia data management to address the problem of delivering multimedia data in distributed heterogeneous environments. This paper presents a novel method of video adaptation called segment-based adaptation. It aims at applying different reduction methods on different segments based on physical content. The video is first partitioned into homogeneous segments based on physical characteristics. Then optimal reduction methods are selected and applied on each segment with the objective of minimizing quality loss and/or maximizing data size reduction during adaptation. In addition to this new method of variation creation, the commonly used reduction methods are also implemented. To realize variation creation, a unifying framework called the Variation Factory is developed. It is extended to the Multi-Step Variation Factory, which allows intermediary videos to serve as variations and also as sources to further variations. Our proposals are implemented as part of a server component, called the Variation Processing Unit (VaPU) that generates different versions of the source and an MPEG-7 metadata document.}, address = {Chennai, India}, language = {DE}, publisher = {Digital Information Research Foundation}, url = {http://www.dirf.org/jdim/v3i2.asp} }