“Introduction to Video Indexing and Its Applications”
a CNCSIS –
Lect.Dr.Ing. Bogdan-Emanuel IONESCU
LAPI - The Image Processing and Analysis Laboratory
University "Politehnica"
of
http://alpha.imag.pub.ro/VideoIndexingRP2/
Email: bionescu@alpha.imag.pub.ro
Abstract: Advances in modern multimedia technologies (e.g. better storage devices, improved compression techniques, faster wireless communication protocols, etc.) have led to huge and ever-growing archives of multimedia documents, and in particular of video footage. Therefore, the actual issue is not the lack of information, but instead, the difficulty of accessing large amount of such data. The existing solution are the indexing systems which are constantly improve to make unstructured and unknown video data accessible, reusable, searchable and manageable for the common user. In this presentation we shall discuss the concept of video indexing, in his two existing types, that is syntactic and semantic indexing. Apart from general principle, we are going to present in detail some of the video processing tasks. First, we are addressing the concept of video temporal segmentation which is the basis for almost all the existing low-level and semantic-level video processing techniques. We focus on several algorithms we have developed for video transition detection, i.e. cut, fade and dissolve detection. Further, we are addressing the color-content analysis by describing an approach to global color content characterization in terms of color intensity, hue and saturation (e.g. dark color content, color contrasts, etc.). Finally, we are tackling the automatic content summarization issue by describing several methods for constituting still-image and trailer-like video abstracts. We conclude by presenting our perspectives on this project.