Ioannis Deliyannis

Producing and broadcasting non-linear art-based content through open source interactive internet-tv

The development of an interactive Internet-based TV system designed to cover the broadcasting needs for new media artwork introduces various complexities across the organisation, production and interaction forefronts, as live interactive installation art and multi-sourced multimedia content poses particular presentation requirements. Our work presents and discusses real-life strategies and solutions employed during the development of iMediaTV, an open-source academic broadcasting system that permits various presentation modes to be employed, extending the presentation needs for artistic and non-uniform content. We demonstrate how an open-source Internet-based production/broadcasting system may be customised to include advanced content enhancing features, enabling interactive new media arts presentation over the Web.

Audio Fingerprint Extraction Using an Adapted Computational Geometry Algorithm

This work presents an adapted version of the Computational Geometry Algorithm (CGA) used for the development of audio-based applications and services. The CGA algorithm analyses an audio stream and produces a unique set of points that can be considered to be the audio data “fingerprint”. It is shown that this fingerprint is coding-independent, a fact that can render the proposed algorithm suitable for multiple purposes, including the categorisation of content identity and the identification of audio clips, hence providing support for the realisation of audio sorting/searching tasks and services. Additionally, based on specific novel applications and services, the overall algorithmic performance and efficiency characteristics of the CGA algorithm are discussed and analysed.

Converging Multimedia Content Presentation Requirements for Interactive Television

This work presents the development of iMediaTV, a low-cost Interactive Television service designed to adapt in order to cover varying converging content presentation and interaction requirements: from standard streamed content to new-media artwork. In this process, content, system and user complexities are introduced that need to be resolved before artwork with different requirements may be supported effectively for broadcasting. This chapter presents and examines those issues from the content-requirements perspective using a number of real-life case studies. Under this context it is shown that content with novel presentation/interaction requirements may act as a driver for convergence through the development of interactive television systems that feature advanced presentation and interaction methods. Another issue addressed in this work is the potential exploitation of the technology by those wishing to build and explore its capabilities in order to use it as a new converging communications medium. The proposed strategies may be deployed alongside traditional media-broadcasting structures enabling smooth user transition to interactive television.

Efficient Audio Fingerprint Application Verification Using the Adapted Computational Geometry Algorithm

An earlier work of the authors introduced an adapted version of the Computational Geometry Algorithm (CGA) designed to analyse an audio stream and produce a unique coding-independent fingerprint. As the adaptability and the induced calculation load of the proposed algorithm form a key characteristic for multiple applications, our current investigation aims to measure its performance and stability in dynamic, real-time applications, i.e., in large audio library indexing and dynamic audio recognition. In addition, we investigate the fact that context similarity is also evident across fingerprints; hence a number of comparisons are used to explore the possible uses of this highly desirable algorithmic feature.

Combining Interaction Design and Gaming Technologies for the Development of Interactive Archaeological Content Presentation Systems

Our main objective is to produce state-of-the-art edutainment and serious game end-systems, which satisfy the requirements of all three parties involved in the development process: content experts, end-users and application developers. Their requirements are often cross disciplinary, as each party involved in the process requires solutions to a number of problems which need to be answered in a systematic and complete manner. The ultimate goal of this process is to introduce an efficient, extendable and aesthetically pleasing end-system. In order to achieve these goals, we address and attempt to resolve the most common presentation design issues that arise during the process of interaction design. Completion of this process enables the actual system development to commence with a precise and complete specification of content features and system characteristics.