Representation and abstraction are two of the fundamental concepts computer science. Together they enable “high-level” programming: without programming would be tied to machine code; a representation, it pure mathematical exercise. begins with an abstract structure seeks find more concrete one. Abstraction does reverse: starts structures abstracts away. While formal accounts representation easy...

To meet the increasing complexity of mobile multimedia applications, the System on Chip (SoC) equipping modern mobile devices integrate powerful heterogeneous processing elements among which General Purpose Processors (GPP), Digital Signal Processors (DSP), hardware accelerator are the most common ones. Due to the ever-growing gap between battery lifetime and hardware/software complexity in add...

A number of studies have been published on the benefits offered by educational video games for student development and there has been a constant increase in the use of serious games for this purpose. Very few methodological proposals for educational video game development, however, have been published in scientific literature and the proposals analyzed in this paper display certain drawbacks th...

In this paper we address the issue of producing automatic video abstracts in the video indexing context of animated movies. For a quick browse of the movie’s visual content, we create first a storyboard-like summary, which follows the movie events by providing one key frame for each particular scene. To capture the shot visual activity, we use histograms of cumulative inter-frame distances and ...

This paper unpacks the notion of imagination presented in the I5-system of knowledge creation along several theoretical contributions and process models from “knowledge science”, creativity research and design studies. It aims at conceptual clarification and integration around the key notion of “insight moments” across various levels of abstraction from system perspectives through foci on group...

This paper presents a novel real-time surveillance video summarization system that employs the eye-gaze positions of the surveillance operator. The system output can be used to efficiently review the overlooked sections of the surveillance video, which can be used to increase the reliability of the surveillance system. The summary of the operator-monitored actions can also be obtained for effic...

The steady growth in the adoption of video surveillance systems emphasizes the need for privacy protection techniques. In this paper, we present a method inspired from image abstraction and non-photorealistic rendering fields for creating privacy protection filters. The effectiveness of the proposed filter has been demonstrated by assessing the intelligibility vs. privacy vs. pleasantness in a ...

We present a novel technique for the recognition of complex human gestures for video annotation using accelerometers and the hidden Markov model. Our extension to the standard hidden Markov model allows us to consider gestures at different levels of abstraction through a hierarchy of hidden states. Accelerometers in the form of wrist bands are attached to humans performing intentional gestures,...

In this chapter the authors tackle the analysis and characterization of the artistic animated movies in view of constituting an automatic content-based retrieval system. First, they deal with temporal segmentation, and propose cut, fade and dissolve detection methods adapted to the constraints of this domain. Further, they discuss a fuzzy linguistic approach for automatic symbolic/semantic cont...