WWW Video Search Engines have become increasingly commonplace within the last few years and at the same time video retrieval research has been receiving more attention with the annual TRECVid series of workshops. In this paper we evaluate methods of relevance feedback for video search engines operating over TV news data. We show for both video shots and TV news stories, that an optimal number o...

This paper presents a framework for network bandwidth sharing to transport rate-adaptive packet video using feedback. We show how a weight-based bandwidth sharing policy can be used to allocated network bandwidth among competing video connections and design a feedback control algorithm using the available bit rate (ABR) ow control mechanism. A novel video source rate adaptation algorithm is int...

Amateur minor hockey coaches have recently begun to capture and play back video recordings to provide their teams with visual feedback of their play as a learning tool. Yet what is not clear is whether such video feedback is useful and how video feedback systems could be designed to better match the needs of amateur hockey coaches and players. As such, we wanted to understand coaches’ current p...

from instructors about their performance and then completed the self-reflection. Students in the experimental group (n = 62) received verbal feedback from instructors, and an emailed link to the patientperspective video of their performance. After viewing the video, these students completed the self-reflection. Instructors recorded student performance again the following day, and we compared th...

This paper presents feedback design of a desktop visual communications system. The system consists of video coding using a 3-D graphics model and video transmission over the Internet. To reduce the overall video quality degradation in visual communications caused by coding and networking errors, we jointly researched the compression and transmission of video signals. In building the 3-D graphic...

BACKGROUND High quality feedback is vital to learning in medical education but many students and teachers have expressed dissatisfaction on current feedback practices. Lack of teachers' insight into students' feedback requirements may be a key, which might be addressed by giving control to the students with student led feedback practices. The conceptual framework was built on three dimensions o...

This article examines the ways in which crosslayer information from higher network layers may be utilized for more efficient power management in wireless networks and energy constrained mobile devices. In particular, we present and evaluate mechanisms that finetune transmission power according to information received from the transport (feedback reports from TFRC) and application (type of the v...