Content classification-based and QoE-driven video send bitrate adaptation scheme
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
Adapted IPTV service within novel IMS architecture
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
Subjective evaluation of spatial resolution and quantization noise tradeoffs
IEEE Transactions on Image Processing
Compression quality prediction model for JPEG2000
IEEE Transactions on Image Processing
A framework for end-to-end video quality prediction of MPEG video
Journal of Visual Communication and Image Representation
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This paper presents a novel method for fast and quantified estimation of the Perceived Quality of Service (PQoS) for MPEG-4 video content, encoded at constant bit-rates. Taking into account the instant PQoS variation due to the Spatial and Temporal (S---T) activity within a given MPEG-4 encoded content, this paper introduces the Mean PQoS (MPQoS) as a function of the video encoding rate and the picture resolution, and exploits it as a metric for objective video quality assessment. The validity of this metric is assessed by comparing PQoS experimental curves to the theoretical benefit functions vs. allocated resources. Based on the proposed metric, and taking into account the qualitative similarity between theoretical and experimental curves, the paper presents a prototype method for pre-encoding PQoS assessment based on the fast estimation of the S---T activity level of a video signal.