This paper presents a method for creating 3D models of real objects using video see-through augmented reality. We use a tracked probe to sample the objects’ geometries and video images acquired from the headmounted cameras to capture textures. Our system provides visual feedback by overlaying the model onto the real object in the user’s field of view. This visual feedback makes the modeling pro...

Video transmission over the Internet is becoming very popular with the majority of applications transporting stored pre-encoded video from server to client. These new applications have strict timing and loss requirements, which the current deployment of the Internet is unable to guarantee. To enable quality streaming of real time video, the application has to be rate adaptive and use feedback s...

For developing advanced query formulation methods for general multimedia data, we describe the issues related to video data. We distinguish between the requirements for image retrieval and video retrieval by identifying queryable attributes unique to video data, namely audio, temporal structure, motion, and events. Our approach is based on visual query methods to describe predicates interactive...

This case series study evaluated the feasibility and acceptability of a behavioral/cognitive psychological intervention in a pediatric primary health care setting during standard well-baby visits. The aim of the intervention was to support caregivers' sensitivity and mentalization in order to promote infant mental health (IMH). Four neonates from birth to 8 months were consecutively enrolled to...

We present and compare several video transmission systems with various feedback and coding strategies for wireless real-time transmission. A channel coding system based on high-memory convolutional codes (CCs) is deployed which aims on delaying the first error within a progressively coded data frame as far as possible. A low-rate feedback channel is introduced to communicate the number of error...

Distributed video coding (DVC) is an important topic for emerging applications, for example visual sensor networks and mobile video streaming. However, the major handicap applying DVC for real world applications is still the mandatory feedback channel. In previous approaches, the rate allocation algorithm was relying on feedback channel data. Commonly bit plane by bit plane decoding is done in ...

Video streaming and videoconferencing technology is now attainable using inexpensive and widely available equipment. This paper uses of a set of case studies conducted at a recent conference in the UK to investigate the technical and organizational issues related to differing approaches to the technology. Two approaches, videoconferencing over the Access Grid with VRVS and a simple mono-directi...

It is a challenging problem to design an e cient MPEG-4 video delivery system that can maximize the perceptual quality while achieving high resource utilization. This paper addresses this problem by presenting an architecture of transporting MPEG-4 video over the Internet, which includes an end-to-end feedback control algorithm and a source encoding rate control algorithm. Our feedback control ...

The University of Huddersfield-funded ‘Video Enhanced Response in Feedback Loops’ Project (VERiFy) is using a participatory action research methodology to explore the potential of asynchronous video to promote closer learner engagement in the assessment and feedback process. The initial stage of the project has seen the involvement of academic practitioners at two Higher Education Institutions ...

Previous research has demonstrated that for unacquainted dyads and groups interacting over video, feedback delay can interfere with the impression-formation process and increase cognitive load, in turn leading to incorrect interpersonal judgments. In this study, 35 dyads participated in two 10-min conversation periods over video monitors. In one period there was a 1-s delay in the audio/video s...