This paper presents a complete system for shot and scene detection in broadcast videos, as well as a method to select the best representative key-frames, which could be used in new interactive interfaces for accessing large collections of edited videos. The final goal is to enable an improved access to video footage and the re-use of video content with the direct management of user-selected vid...

In this paper we propose automatic tools useful for the segmentation and indexing of video documents. These tools provide a rst structure of a video document, which is a sound starting point allowing further sophisticated and dedicated algorithms to be run on its parts. Apart from being automatic, these tools are very simple, fast and e cient, due to the use of morphological lters. Two di erent...

This work addresses the problem of video matting, that is extracting the opacity-layer of a foreground object from a video sequence. We introduce the notion of alpha-flow which corresponds to the flow in the opacity layer. The idea is derived from the process of rotoscoping, where a user-supplied object mask is smoothly interpolated between keyframes while preserving its correspondence with the...

We present an efficient video data model that extends the DISIMA image data model by adding the video components and setting up links between image and video data. Many video data models have been proposed, most of which describe video data independently of image data and therefore fail to consider the relationship between videos and images. Our proposed model expresses the semantics of video d...

In this paper we analyse the advantages of a joint boosting method, previously known in the object recognition community, to detect and classify action keyframes. The method focuses on sharing object parts among action classes. Instead of sharing parts that only encode shape similarities, we propose to include motion information as an extra clue for sharing. We show that the inclusion of motion...

An image-rich interface is presented, which emphasizes visual exploration of sets of images representing shots returned from a query or filter against a digital video corpus. This interface, a storyboard of keyframes for multiple video segments, maintains temporal layout, accommodates contextual cues and filtering, supports additional filtering through visual features, and provides a means of d...

In this paper, we present a representation for three-dimensional geometric animation sequences. Different from standard key-frame techniques, this approach is based on the determination of principal animation components and decouples the animation from the underlying geometry. The new representation supports progressive animation compression with spatial, as well as temporal, level-of-detail an...

In consequence of the popularity of family video recorders and the surge of Web 2.0, increasing amounts of videos have made the management and integration of the information in videos an urgent and important issue in video retrieval. Key frames, as a high-quality summary of videos, play an important role in the areas of video browsing, searching, categorisation, and indexing. An e®ective set of...

Given a pair of keyframe formations for a group consisting of multiple individuals, we present a spectral-based approach to smoothly transforming a source group formation into a target formation while respecting the clusters of the involved individuals. The proposed method provides an effective means for controlling the macroscopic spatiotemporal arrangement of individuals for applications such...