Reading text from computer screens
ACM Computing Surveys (CSUR)
Sharp or smooth?: comparing the effects of quantization vs. frame rate for streamed video
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Can small be beautiful?: assessing image resolution requirements for mobile TV
Proceedings of the 13th annual ACM international conference on Multimedia
A basic multimedia quality model
IEEE Transactions on Multimedia
The sweet spot: how people trade off size and definition on mobile devices
MM '08 Proceedings of the 16th ACM international conference on Multimedia
A comprehensive view on user studies: survey and open issues for mobile TV
Proceedings of the seventh european conference on European interactive television conference
The big picture on small screens delivering acceptable video quality in mobile TV
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Adaptive video and metadata display using multimedia documents
Proceedings of the 2010 ACM workshop on Social, adaptive and personalized multimedia interaction and access
A Hybrid Method for Quality Evaluation in the Context of Use for Mobile (3D) Television
Multimedia Tools and Applications
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Mobile TV services are available in an increasing number of countries. For cost reasons, most of these services offer material directly recoded for mobile consumption (i.e. without additional editing). This paper reports the findings of a study on the influence of text legibility and quality on the perceived video quality of mobile TV content. The study, with 64 participants, examined responses to news footage presented at four image resolutions and seven video encoding bitrates. The results showed that a simulated separate delivery of a news ticker and other textual information significantly increased the perceived video quality of the entire screen for native speakers. In addition, some automatable changes to the layout of news content resulted in substantial increases in perceived video quality. The results can be used to quantify the perceived quality gains when considering text delivery separately from the video stream and in the development of more accurate multimedia quality models.