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The Big Picture on Small Screens Delivering Acceptable Video Quality in Mobile TV

Knoche, H; Sasse, MA; (2009) The Big Picture on Small Screens Delivering Acceptable Video Quality in Mobile TV. ACM Transactions on Multimedia Computing, Communications and Applications , 5 (3) , Article 20. 10.1145/1556134.1556137. Green open access

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Abstract

Mobile TV viewers can change the viewing distance and (on some devices) scale the picture to their preferred viewing ratio, trading off size for angular resolution. We investigated optimal trade-offs between size and resolution through a series of studies. Participants selected their preferred size and rated the acceptability of the visual experience on a 200ppi device at a 4: 3 aspect ratio. They preferred viewing ratios similar to living room TV setups regardless of the much lower resolution: at a minimum 14 pixels per degree. While traveling on trains people required videos with a height larger than 35mm.

Type:Article
Title:The Big Picture on Small Screens Delivering Acceptable Video Quality in Mobile TV
Open access status:An open access version is available from UCL Discovery
DOI:10.1145/1556134.1556137
Publisher version:http://dx.doi.org/10.1145/1556134.1556137
Language:English
Additional information:© ACM, 2009. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM Transactions on Multimedia Computing, Communications, and Applications, Vol.5, Iss.3, (2009) http://dx.doi.org/10.1145/1556134.1556137
Keywords:Human Factors, Experimentation, Measurement, Design, Mobile multimedia consumption, resolution, size, trade-off, SUBJECTIVE IMAGE QUALITY, VIEWING-DISTANCE, RESOLUTION, DISPLAY, WORK, SIZE
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science

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