Naslov
Fast analysis of scalable video for adaptive browsing interfaces

Autori
Mrak, Marta ; Ćalić, Janko ; Kondoz, Ahmet

Izvornik
Computer Vision and Image Understanding (1077-3142) 113 (2009), 3; 425-434

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
scalable video coding; compressed domain analysis; video summarisation

Sažetak
Driven by a high demand for adaptive video interfaces and recent advances in scalable video coding technology, this work introduces a framework for video summarisation and browsing by utilising inherently hierarchical compressed-domain features of scalable video and efficient dynamic video summarisation. This approach enables instant adaptability of generated video summaries to available channel bandwidth as well as display resources. By utilising compressed domain features an efficient hierarchical analysis of motion activity at different layers of complexity is achieved. Exploiting a contour evolution algorithm, a scale space of temporal video descriptors is generated, enabling rapid video summarisation. Given the spatial resources of the terminal display and generated video summary, the final browsing layout is generated utilising an unsupervised robust spectral clustering technique and a fast discrete optimisation algorithm. Results show excellent scalability of the video summaries and good algorithm efficiency.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA