376 research outputs found
Emotions, behaviour and belief regulation in an intelligent guide with attitude
Abstract unavailable please refer to PD
NewsTalk--a speech interface to a personalized information agent
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1995.Includes bibliographical references (p. 79-87).Jeffrey Alan Herman.M.S
Using an essentiality and proficiency approach to improve the web browsing experience of visually impaired users
Increased volumes of content exacerbate the Web accessibility issues faced by people with visual impairments. Essentiality & Proficiency is presented as one method of easing access to information in Websites by addressing the volume of content coupled with how it is presented. This research develops the concept of Essentiality for Web authors.
A preliminary survey was conducted to understand the accessibility issues faced by people with visual impairments. Structured interviews were conducted with twelve participants and a further 26 participants responded to
online questionnaires. In total there were 38 participants (both sexes), aged 18 to 54 years. 68% had visual impairments, three had motor issues, one had
a hearing impairment and two had cognitive impairments. The findings show that the overload of information on a page was the most prominent difficulty experienced when using the Web.
The findings from the preliminary survey fed into an empirical study. Four participants aged 21 to 54 years (both sexes) from the preliminary survey were presented with a technology demonstrator to check the feasibility of
Essentiality & Proficiency in the real environment. It was found that participants were able to identify and appreciate the reduced volume of information. This initiated the iterative development of the prototype tool.
Microformatting is used in the development of the Essentiality & Proficiency prototype tool to allow the reformulated Web pages to remain standards compliant. There is a formative evaluation of the prototype tool using an
experimental design methodology. A convenience sample of nine participants (both sexes) with a range of visual impairments, aged 18 to 52 performed tasks on a computer under three essentiality conditions. With an alpha level
.05, the evaluation of the Essentiality & Proficiency tool has been shown to offer some improvement in accessing information
Advances in Human-Robot Interaction
Rapid advances in the field of robotics have made it possible to use robots not just in industrial automation but also in entertainment, rehabilitation, and home service. Since robots will likely affect many aspects of human existence, fundamental questions of human-robot interaction must be formulated and, if at all possible, resolved. Some of these questions are addressed in this collection of papers by leading HRI researchers
Highly efficient low-level feature extraction for video representation and retrieval.
PhDWitnessing the omnipresence of digital video media, the research community has
raised the question of its meaningful use and management. Stored in immense
multimedia databases, digital videos need to be retrieved and structured in an
intelligent way, relying on the content and the rich semantics involved. Current
Content Based Video Indexing and Retrieval systems face the problem of the semantic
gap between the simplicity of the available visual features and the richness of user
semantics.
This work focuses on the issues of efficiency and scalability in video indexing and
retrieval to facilitate a video representation model capable of semantic annotation. A
highly efficient algorithm for temporal analysis and key-frame extraction is developed.
It is based on the prediction information extracted directly from the compressed domain
features and the robust scalable analysis in the temporal domain. Furthermore,
a hierarchical quantisation of the colour features in the descriptor space is presented.
Derived from the extracted set of low-level features, a video representation model that
enables semantic annotation and contextual genre classification is designed.
Results demonstrate the efficiency and robustness of the temporal analysis algorithm
that runs in real time maintaining the high precision and recall of the detection task.
Adaptive key-frame extraction and summarisation achieve a good overview of the
visual content, while the colour quantisation algorithm efficiently creates hierarchical
set of descriptors. Finally, the video representation model, supported by the genre
classification algorithm, achieves excellent results in an automatic annotation system by
linking the video clips with a limited lexicon of related keywords
Recommended from our members
The mobile information access experience - A user perspective
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Mobile technologies, such as mobile phones, smartphones and Palmtop computers,
are in an upwards trend and earliest models of such devices are already available to
end-users to communicate and access multimedia content on-the-move. As a logical
outcome of this development in mobile technologies and devices, content provider
companies have already started investing and piloting mobile multimedia content
distribution and broadcasting technologies. Nevertheless, no matter how cutting-edge
technology is and no matter how stylish the mobile devices are, the ultimate success
of wireless communication technologies and devices are directly associated with the
user adoption and embrace of these new equipment and technologies. In this perspective, since multimedia content, for mobile or not, is ultimately
produced for the education and/or enjoyment of viewers, the user's perspective
concerning the presentation quality is surely of equal importance as objective Quality
of Service (QoS) technical parameters, to defining distributed multimedia quality. In
order to comprehensively understand user experiences whilst accessing information
using mobile devices and technologies, we investigate user-mobile device interaction
and look into the surrounding issues in a uniform manner by combining multiple
aspects: user initial device experience (Out-of-Box Experience), mobile information
access in a real-world context, device impact on user information access and
perceptually tailored multimedia content impact on user information assimilation and
satisfaction. Accordingly, an extensive experimental investigation has been
undertaken to see how user experiences varied based on device familiarity, device
type, real-world context and variable locations. The findings has shown that the
overall perception, and effectively the user information access experience, is affected
and improved when multimedia content is tailored according to user device type and
context. Thus highlights that the future of mobile computing necessitates two-faceted
research, which should combine both a user as well as a technical perspective
Using an essentiality & proficiency approach to improve the web browsing experience of visually impaired users
Increased volumes of content exacerbate the Web accessibility issues faced by people with visual impairments. Essentiality & Proficiency is presented as one method of easing access to information in Websites by addressing the volume of content coupled with how it is presented. This research develops the concept of Essentiality for Web authors. A preliminary survey was conducted to understand the accessibility issues faced by people with visual impairments. Structured interviews were conducted with twelve participants and a further 26 participants responded to online questionnaires. In total there were 38 participants (both sexes), aged 18 to 54 years. 68% had visual impairments, three had motor issues, one had a hearing impairment and two had cognitive impairments. The findings show that the overload of information on a page was the most prominent difficulty experienced when using the Web. The findings from the preliminary survey fed into an empirical study. Four participants aged 21 to 54 years (both sexes) from the preliminary survey were presented with a technology demonstrator to check the feasibility of Essentiality & Proficiency in the real environment. It was found that participants were able to identify and appreciate the reduced volume of information. This initiated the iterative development of the prototype tool. Microformatting is used in the development of the Essentiality & Proficiency prototype tool to allow the reformulated Web pages to remain standards compliant. There is a formative evaluation of the prototype tool using an experimental design methodology. A convenience sample of nine participants (both sexes) with a range of visual impairments, aged 18 to 52 performed tasks on a computer under three essentiality conditions. With an alpha level .05, the evaluation of the Essentiality & Proficiency tool has been shown to offer some improvement in accessing information.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Human-Computer Interaction
In this book the reader will find a collection of 31 papers presenting different facets of Human Computer Interaction, the result of research projects and experiments as well as new approaches to design user interfaces. The book is organized according to the following main topics in a sequential order: new interaction paradigms, multimodality, usability studies on several interaction mechanisms, human factors, universal design and development methodologies and tools
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