+ Multimedia Technologies

Due to a high demand for efficient video summarisation and video adaptation technologies, this paper focuses on utilisa-tion of compressed domain feature extraction and hierarchi-cal analysis of motion information in scalable video in order to generate intuitive visual summaries. By combining the analysis of inherently hierarchical motion activity measure and a fast geometrical curve simplification algorithm, a set of the most representative key-frames is generated in a very fast and robust manner. The experimental results show good subjective representation, while the method efficiency en-ables fast generation of summaries of large-scale video re-positories. Index Terms—video analysis, video summarisation, hi-erarchical motion codin