Video management tools and techniques are based on pixels rather than perceived content. Thus, state-of-the-art video editing systems can easily manipulate such things as time codes and image frames, but they cannot "know," for example, what a basketball is. Our research addresses four areas of content-based video management. >

Content based video indexing and retrieval

An integrated system for content-based video retrieval and browsing

There have been many research efforts devoted to tangible user interfaces (TUIs), but it has proven difficult to create a definition or taxonomy that allows us to compare and contrast disparate research efforts, integrate TUIs with conventional interfaces, or suggest design principles for future efforts. To address this problem, we present a taxonomy, which uses metaphor and embodiment as its two axes. This 2D space treats tangibility as a spectrum rather than a binary quantity. The further from the origin, the more “tangible” a system is. We show that this spectrum-based taxonomy offers multiple advantages. It unifies previous categorizations and definitions, integrates the notion of “calm computing,” reveals a previously un-noticed trend in the field, and suggests design principles appropriate for different areas of the spectrum.

/pdf/a-taxonomy-for-and-analysis-of-tangible-interfaces-18ktkaxpe8.pdf

A taxonomy for and analysis of tangible interfaces

Magic Lens filters are a new user interface tool that combine an arbitrarily-shaped region with an operator that changes the view of objects viewed through that region. These tools can be interactively positioned over on-screen applications much as a magnifying glass is moved over a newspaper. They can be used to help the user understand various types of information, from text documents to scientific visualizations. Because these filters are movable and apply to only part of the screen, they have a number of advantages over traditional windowwide viewing modes: they employ an attractive metaphor based on physical lenses, show a modified view in the context of the original view, limit clutter to a small region, allow easy construction of visual macros and provide a uniform paradigm that can be extended across different types of information and applications. This paper describes these advantages in more detail and illustrates them with examples of magic lens filters in use over a variety of applications. CR

The movable filter as a user interface tool

A method of hierarchical digital video summarization and browsing includes inputting a digital video signal for a digital video sequence and generating a hierarchical summary based on keyframes of the video sequence. Additional steps may include computing histograms for the digital video sequence; detecting shot boundaries within the digital video sequence; determining the number of keyframes to be allocated within each shot; locating the actual position of each keyframe within each shot; identifying keyframe locations by the largest consecutive difference criteria; pruning keyframes for an shot without meaningful action; extracting keyframes efficiently in the case of compressed video; and browsing the shots using the hierarchical keyframe summary.

Method for hierarchical summarization and browsing of digital video

We describe an interface prototype, the Hierarchical Video Magnifier, which allows users to work with a video source at fine-levels of detail while maintaining an awareness of temporal context. The technique allows the user to recursively magnify the temporal resolution of a video source while preserving the levels of magnification in a spatial hierarchy. We discuss how the ability to inspect and manipulate hierarchical views of temporal magnification affords a powerful tool for navigating, analyzing and editing video streams.

A magnifier tool for video data

IDE, the Instructional Design Environment, is a computer system to assist in creating instruction materials. Instructional design and development is a complex information management task for which IDE provides a hypermedia-based representation environment. In this environment, all of the information used for designing and developing a course can be represented and manipulated. IDE provides tools and structures that automate many of the routine tasks arising during course development. These tools simplify the development task, and result in the creation of more consistent instruction.

Creating instruction with IDE: Tools for instructional designers

We describe a robust working prototype of a system for accurate page-ID detection from bound paper books. Our method uses a new RFID technology to recognize book page location. A thin flexible transponder tag with a unique ID is embedded in the paper of each page, and a tag reader is affixed to the binding of the back of the book. As the pages turn, the tag reader notices which tags are within its read range and which have moved out of its range (which is about four inches). The human interacts with the book naturally, and is not required to perform any actions for page detection that are not usual in book interaction. The page-detection data can be used to enhance the experience of the book, or to enable the book as a controller for another system. One such system, an interactive museum exhibit, is briefly described.

Page detection using embedded tags

Speeder Reader: An experiment in the future of reading

We describe the design and implementation of a complex sonic environment for Portable Effects, a museum exhibit consisting of several interactive stations. The installation employs different types of auditory display in combination, as navigational aids or as auditory representations of actions and processes. Three aspects of the work are discussed: determining appropriate types of sounds and their mappings to particular actions and processes; adjusting sonic content, placement, and balance for maximum effect; and most importantly, integrating the individual stations into a cohesive aural experience.

The sound of your stuff: designing a complex auditory display for an interactive museum exhibit

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