Showing papers on "Interactive video published in 2002"

Interactive video display system

Abstract: An interactive video display system. A display screen is for displaying a visual image for presentation to a user. A camera is for detecting an object in an interactive area located in front of the display screen, the camera operable to capture three-dimensional information about the object. A computer system is for directing the display screen to change the visual image in response to the object.

JPEG2000: standard for interactive imaging

Abstract: JPEG2000 is the latest image compression standard to emerge from the Joint Photographic Experts Group (JPEG) working under the auspices of the International Standards Organization. Although the new standard does offer superior compression performance to JPEG, JPEG2000 provides a whole new way of interacting with compressed imagery in a scalable and interoperable fashion. This paper provides a tutorial-style review of the new standard, explaining the technology on which it is based and drawing comparisons with JPEG and other compression standards. The paper also describes new work, exploiting the capabilities of JPEG2000 in client-server systems for efficient interactive browsing of images over the Internet.

System and method to provide customized graphical user interfaces via an interactive video casting network

Abstract: A graphical user interface (GUI) for an interactive video casting network can be provided that is capable of being customized per element or as a scene of one channel or universally on all channels. For example, a user can select a desired appearance (e.g., a skin or schema) of individual elements related to a channel, such as scroll bars, backgrounds, icons, GIFs, menus, and the like. Alternatively or in addition, a user may choose to customize the appearance of items/elements such as graphical overlays, pop-up screens, trigger indicators, buttons, interactive applications, web pages, and the like. Non-exhaustive and non-limiting examples of skin themes may include, space, travel, animals, architecture, cartoons, etc. The skins may include settings related to shapes, color and pattern schemes, graphics, animation, and other variations.

Method and system for an interactive video system

Abstract: A method and system provide an interactive video stream technique that allows pre-determination of interactive objects, on a frame-by-frame basis, within a video stream. The interactive technique allows designation of interactive objects as carried by key-frames, representing the end of a scene, within the video stream. Pre-determined information about the interactive object is provided to the user in response to user selection of the object. The interactive technique may include a video stream player software application that may receive a digital video stream and allow a user to designate the interactive objects within the video stream, and allow a user to select the interactive objects within the video stream during display and be provided with the pre-determined information about the object in response to the user selection.

Real time interactive video system

Abstract: In accordance with the invention (Fig. lA), a video frame interaction application, resident on the viewer interaction platform (13), allows a viewer to select specific frames from the video content, as it is broadcast and stores these frames in the memory of the viewer interaction platform. If the viewer interaction platform has limited memory, an Internet link to the image can be saved. The frames are chosen by activating an entry key on the viewer interaction platform. The user selection is either sent to the Website (12) for immediate retrieval of the selected frame, or alternatively, the requested linked is saved for later access to the Website. The Website, upon request, sends the selected frame to the video frame interaction application which allows the viewer to access the pixel objects and link to other resource platforms.

Telemedicine and doctor-patient communication: a theoretical framework for evaluation.

Abstract: The literature on doctor-patient communication demonstrates that patient, provider and contextual characteristics influence behaviour within medical encounters, which in turn is an important determinant of health outcomes. This paper introduces a conceptual model which posits that telemedicine affects health outcomes through changes in the way doctors and patients communicate with one another. It also proposes that this process depends on the medium through which the consultation takes place, whether in person, over the telephone, via fax or email, or through two-way interactive video. Since participants in two-way interactive video-consultations rarely meet in person, it is particularly important that the effect of substituting video for face-to-face consultations be delineated.

Interactive Video Training of Perceptual Decision-Making in the Sport of Baseball

Abstract: This study builds on a body of research in sports science that has used video as a means of measuring and training perceptual and decisionmaking skills in a variety of sports. Expert-novice studies using a video occlusion method have shown that expert athletes are able to make better and earlier recognition of an opponent’s action, such as a baseball pitch, priming a rapid response. Training using video occlusion targets the time frame, measured in less than one-half second, which is associated with expert perception and decision-making. This is the first such study to measure transfer of video training to game performance. Video training in pitch recognition was associated with significantly better batting averages for college baseball players, as measured by rank correlation. The part-task approach has implications for training expert perceptual decision-making in other sports and in areas beyond sports, such as emergency response, vehicle operation, and use-of-force training.

TeleRehab: Stroke Teletherapy and Management Using Two-Way Interactive Video

Abstract: &NA; A comprehensive, coordinated rehabilitation program can reduce mortality and improve functional outcomes following stroke. Such services are often variable and limited especially in rural areas of the country. The need for alternative health care delivery models is real and critical. TeleRehab is a versatile and viable option for delivering rehabilitation services that incorporates 2‐way interactive video. This specialized approach demonstrates promising signs of facilitating the transition for specialized stroke follow‐up care and services in the home and communitybased settings. This paper describes a stroke teletherapy case that was successfully managed for 17 months by an interdisciplinary team of rehabilitation specialists. Lessons learned in both technology and human domains are discussed.

A comparison of distance education instructional methods in occupational therapy.

Abstract: The progression of technology is rapidly bringing new opportunities to students and academic institutions, resulting in a need for additional information to determine the most effective strategies for teaching distance learners. The purpose of this study was to compare the effectiveness of three instructional strategies (two-way interactive video and audio, chat rooms, and independent learning) and student preferences regarding instructional methods in a mental health programming distance learning course. Precourse and postcourse surveys were completed by 22 occupational therapy students enrolled in the course. Effectiveness of the teaching methods was determined based on the results of students' examinations. The findings indicated that there were no statistically significant differences in student performance on multiple-choice examinations using the three instructional methods. Of students, 77% indicated a preference for two-way interactive video and audio instruction. To provide effective education via distance learning methods, faculty members need to structure assignments that facilitate interaction and communication among learners. As distance education becomes more commonplace, it is important to identify the methods of instruction that are the most effective in delivering essential course content and the methods that provide the atmosphere most conducive to learning.

System, method, and data structure for multimedia communications

Abstract: The invention is based on a highly efficient protocol for the delivery of high-quality multimedia communication services, such as video multicasting, video on demand, real-time interactive video telephony, and high-fidelity audio conferencing over a packet-switched network The invention addresses the silicon bottleneck problem and enables high-quality multimedia services to be widely used The invention can be expressed in a variety of ways, including methods, systems, and data structures One aspect of the invention involves a method in which a packet ( 10 ) of multimedia data is forwarded through a plurality of logical links in a connection-oriented, packet-switched network using a datagram address contained in the packet (ie, datagram address-based routing) The datagram address operates as both a data link layer address and a network layer address

Web library tours: using streaming video and interactive quizzes

Abstract: Many academic library Web sites offer online “tours” to provide basic orientation of their collections and services. However, these tours are often merely photos, floor plans, or written descriptions. In 1999, the library at California State University, Fullerton sought to improve its own Web site orientation, by using more engaging Web technologies; namely, streaming video and interactive tutorials. A project of videotaping a full‐motion, narrated tour of the library, and then placing it on the Web site as streaming video segments, was undertaken. Additionally, interactive tutorials – quizzes written in JavaScript so as to “reply” to user prompts – were added. This article will describe the process of creating this project, available in its completed form at: http://www. library.fullerton.edu/tour

Maximizing the number of users in an interactive video-on-demand system

Abstract: Video prefetching is a technique that has been proposed for the transmission of variable-bit-rate (VBR) videos over packet-switched networks. The objective of these protocols is to prefetch future frames at the customers' set-top box (STB) during light load periods. Experimental results have shown that video prefetching is very effective and it achieves much higher network utilization (and potentially larger number of simultaneous connections) than the traditional video smoothing schemes. The previously proposed prefetching algorithms, however, can only be efficiently implemented when there is one centralized server. In a distributed environment there is a large degradation in their performance. In this paper we introduce a new scheme that utilizes smoothing along with prefetching, to overcome the problem of distributed prefetching. We show that our scheme performs almost as well as the centralized prefetching protocol even though it is implemented in a distributed environment. In addition, we introduce a call admission control algorithm for a fully interactive video-on-demand (VoD) system that utilizes this concept of distributed video prefetching. Using the theory of effective bandwidths, we develop an admission control algorithm for new requests, based on the user's viewing behavior and the required quality of service (QoS).

Video rental/purchase system and methods

Abstract: An interactive video rental/purchase system enables a potential renter/purchaser to determine the availability of one or more videos from one or more video retail outlets via the internet on a home personal computer. The system provides the user with pricing information, the most geographically convenient location at which one or more videos is currently available, and enables the user to reserve one or more selected videos by placing an immediate hold on the selections. The system also provides the user with access to additional information including trailers of available videos, critics' reviews of the videos, and viewer feedback from other users who have viewed the videos.

System and method of providing communication between a vendor and client using an interactive video display

Abstract: A method and system for providing communication between a vendor and a client includes a large screen display connected into a network that enables client/vendor communication. Through the network, the vendor's server provides the desired content to the display. For a network of displays, the content may be the same on all displays or unique to each display. The display includes a transmitter and a receiver. Clients interact with the display using a wireless communications or computing device.

Emergency care in a remote area using interactive video technology: a study in prehospital telemedicine.

Abstract: Sir, It has always been recognized that people living or touring at a distance from formal medical help are vulnerable, particularly in emergencies. The Victorian Department of Human Services (Health Department) recently funded a project called ‘Urgent Care in Victorian Rural Towns’. A fundamental finding of the survey was that ‘most rural communities have concerns about the lack of urgent care infrastructure’1. Recent studies have shown that early and specialized prehospital management contributes to survival in emergencies2. The prehospital phase of management in particular accurate triage to direct the patient to the closest, most appropriate facility is of critical importance3. The key to successful history taking in emergency medicine is obtaining a comprehensive description of the mechanism and pattern of injury or illness. It is now accepted that information technologies such as on-scene photography and telemedicine applications may be used to deliver realtime crash information to aid the emergency physician in caring for patients4. Prehospital instant photography influences the receiving physicians’ perception of the mechanism of injury5. Telemedicine for stroke victims can be used to link patients in the ambulance to the emergency department6, and observations from various studies suggest that possibly preventable neurological deterioration may be due to the injury not being recognized initially7. The availability of satellite telemedicine in small remote communities can only improve the situation (whether in traumatic or medical emergencies).

Subband-adaptive turbo-coded OFDM-based interactive video telephony

Abstract: A range of adaptive orthogonal frequency division multiplex (AOFDM) video systems are proposed for interactive communications over wireless channels. The proposed constant target bit-rate subband-adaptive OFDM modems can provide a lower bit error rate than a corresponding conventional OFDM modem. The slightly more complex switched or time-variant target bit rate AOFDM modems can provide a balanced video quality performance, across a wider range of channel signal-to-noise ratios, maintaining the best video performance. Upon invoking the technique advocated, irrespective of the channel conditions experienced, the transceiver achieves always the best possible video quality by automatically adjusting the achievable bit rate and the associated video quality in order to match the channel quality experienced. This is achieved on a near-instantaneous basis under given propagation conditions in order to cater for the effects of path-loss, fast-fading, slow-fading, dispersion, etc. Furthermore, when the mobile is roaming in a hostile outdoor propagation environment, typically low-order, low-rate modem modes are invoked, while in benign indoor environments predominantly the high-rate, high source-signal representation quality modes are employed.

Introduction to Videoconferencing

Abstract: Videoconferencing applications are an important area of study in multimedia computing and networking because it is a challenging real-time systems problem. By its nature, a videoconference is an interactive application with stringent latency and throughput requirements. In the ideal world, the video signal would be sent at full-motion video rates, with sufficient resolution to create some semblance of the illusion of presence or colocation with remote conferees. Another reason for studying videoconferencing is the fact that it has frequently been touted as the “killer app” of multimedia computing. It has long been viewed as the application that would appeal to all computer users because it would provide a richer medium for person-to-person interaction than a telephone call. Videoconferencing, or more generally, multipoint interactive video, was also envisioned as a key component of distance learning systems, remote consultation systems, and high-end gaming and teleimmersion systems. Thus solving the problems of network and operating system support for videoconferencing has implicitly been viewed as one of the linchpins for realizing the next-generation communication services and applications on the Internet.

Computer Vision for a 3-D Visualisation and Telepresence Collaborative Working Environment

Abstract: An integrated media system is a computer-based environment that supports the creation, sharing, distribution and effective communication of multimodal information across the boundaries of space and time. The EU Information Societies Technology (IST) project — VIRTUE (Virtual Team User Environment) is working steadily towards the realisation of most aspects and properties of such a system, with particular emphasis on a three-way semi-immersive telepresence videoconferencing scenario. In contrast with the traditional videoconferencing system that we know now, the outcome of the project is expected to demonstrate distinctive presence features and experience for the conference participants. These include views of full-body-size realistically rendered images, eye-to-eye contact, gaze awareness, normal hand gesturing and direct body language. The purpose of this paper is to describe the current work in its related technical field, and the main objectives and scope of this project. One optional software system framework is outlined, and also illustrated are some component technologies in 3-D computer vision analysis that are being developed. The application of these component technologies, notably the dense-disparity estimation and the novel view synthesis, in 3-D interactive video manipulation and visualisation, are widely expected.

System and method for constructing an interactive video menu

Abstract: A method and system is disclosed to construct an interactive video menu. In the invention, an interactive video project is first established. One or more video clips are added to the interactive video project, with each of the video clips represented with a video frame contained therein. Thereafter, each of the video clips is parsed to identify one or more video chapters included in the video clip, with each of the video chapters also represented with a video frame contained therein. Therefore, a 2-level interactive video menu is created based on a menu template and hierarchical relationship between the video clips and their corresponding video chapters, with the first-level menu including one or more items respectively linked to second-level menus for the corresponding video clips, and the second-level menu including one or more items linked to playback commands for the corresponding video chapters in response to a user selection.

System and method for video interaction with a character

Abstract: An interactive video system and method is configured to enhance interaction between a user and a video based subject. An exemplary video interaction system and method includes the steps of playing a video clip, presenting a user with response options, receiving a user response selection, and selecting a subject response video clip.

Interactive video racing game

Abstract: An interactive video car racing game can be played on multiple video screens, using individual computers and manual controllers for varying the speed and direction of each car depicted on the video screens. Each player has a video display that includes a split screen presenting two types of race information. One display section presents a reduced scale plan view of a race course and the positions of the race cars on the course. The other display section depicts a magnified ground level view of the race course as seen from the cockpit of selected vehicle.

Distributed interactive video arrays for event based analysis of incidents

Abstract: The distributed interactive video array (DIVA) system is developed to provide a large-scale, redundant cluster of video streams to observe a remote scene and to supply automatic focus-of-attention with event-driven servoing to capture desired events at appropriate resolutions and perspectives. Installing multiple sensors introduces several new research issues related to the system design, including handoff schemes for passing tracked objects between sensors and clusters, methods for determining the "best view" given the context of the traffic scene, and sensor fusion algorithms to best employ the strengths of a given sensor or sensor modality. This paper describes our research focused on the development of DIVA system for traffic and incident monitoring. The paper describes the overall architecture of the DIVA system. Algorithms for vehicle and platoon tracking using multiple cameras, and experimental results using novel distributed video networks deployed on the campus and the interstate I-5.

A conference control protocol for highly interactive video-conferencing

Abstract: Video-conferencing is an efficient tool for distributed collaboration. With the wider availability of broadband wide area networks, such as the Internet2, we can expect an increasing demand for video-conferences conducted over broadband wide area networks. We present a conference control protocol for a highly interactive conference paradigm and its collaboration environment. In such a collaboration environment, a fixed number of channels (three) for multimedia traffic, as well as a common control channel, are used. We propose a conference control protocol that uses a three-channel rotation floor control scheme to coordinate access to the shared media channels and avoid race conditions. Experimental results, as well as the implementation in a research video-conferencing system for wide area networks, show that the proposed protocol can effectively eliminate race conditions while maintaining scalability and reliability.

The effectiveness of augmented reality as a facilitator of information acquisition

Abstract: While simulation and virtual reality dominate the learning and training communities, the lack of real world cues in some systems and expense of others has imposed many limitations on these methods. Augmented reality (AR) incorporates computer-generated images overlaid onto real world objects. Although this technology seems to present distinct advantages over present mediums, it has yet to be determined if AR is effective for the intentions of information acquisition. The purpose of this study is to determine if augmented reality is a viable medium through which information acquisition can occur efficiently and effectively, as compared to more traditional means of learning, such as video, interactive video, and print-based instruction.

Preparing Vision Specialists at a Distance: A Qualitative Study on Computer-Enhanced Learning.

Abstract: The two systems used in this study of six students in a teacher preparation program for students with visual impairments were an interactive video, audio, and data network system and a web-based co...

Interactive adaptive movie annotation

Abstract: We present the interactive, adaptive i-Notation system assisting annotators in effective labeling visual movie content. We restrict ourselves to annotating the names of players. Multimodal information sources are processed automatically, dealing with varying quality of available sources to provide the basis for intelligent interaction. Through a user model designed for evaluation, significant improvements in annotation efficiency are demonstrated.