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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 7 of 7 1 Content-prioritised video coding for British Sign Language communication Muir, Laura J.. - 2007 BASE Show details 2 Visual perception of content-prioritised sign language video quality. Muir, Laura J; Richardson, Iain E G; Hamilton, K. - 2005 Abstract: Video communication systems currently provide poor quality and performance for deaf people using sign language, particularly at low bit rates. Our previous work, involving eye movement tracking experiments and analysis of visual attention mechanisms for sign language, demonstrated a consistent characteristic response which could be exploited to enable optimisation of video coding systems performance by prioritising content for deaf users. This paper describes an experiment designed to test the perceived quality of selectively prioritised video for sign language communication. A series of selectively degraded video clips was shown to individual deaf viewers. Participants subjectively rated the quality of the modified video on a Degradation Category Rating (DCR) scale adapted for sign language users. The results demonstrate the potential to develop content-prioritised coding schemes, based on viewing behaviour, which can reduce bandwidth requirements and provide best quality for the needs of the user. We propose selective quantisation to reduce compression in visually important regions of video images, which require spatial detail for small slow motion detection, and increased compression of regions regarded in peripheral vision where large rapid movements occur in sign language communication. Keyword: 621.36 Optical engineering including lasers & fibre optics; content-prioritised video coding; QA76 Computer software; sign language; Video communication; Visual perception URL: https://doi.org/10.1049/cp%3A20050065 http://researchrepository.napier.ac.uk/id/eprint/9356 BASE Hide details 3 Perception of Sign Language and its application to visual communications for deaf people. Muir, Laura J; Richardson, Iain E G. - : Oxford University Press, 2005 BASE Show details 4 Perception of Sign Language and Its Application to Visual Communications for Deaf People Muir, Laura J.; Richardson, Iain E. G.. - : Oxford University Press, 2005 BASE Show details 5 Perception of Sign Language and Its Application to Visual Communications for Deaf People Muir, Laura J.; Richardson, Iain E. G.. - : Oxford University Press, 2005 BASE Show details 6 Gaze tracking and its application to video coding for sign language. Muir, Laura J; Richardson, Iain; Leaper, Steven. - 2003 BASE Show details 7 Video telephony for the deaf: analysis and development of an optimised video compression product. Muir, Laura J; Richardson, Iain E G. - 2002 BASE Show details

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