We derive an analytical end-to-end video quality prediction and control model for video streaming over IP network. This model maps the quality of service (QoS) parameters defined at the connection level to actual video presentation quality at the receiver end. Specifically, we provide an analysis on the effects of packet loss on the decoded video quality and relate the packet loss ratio, one of...

This paper models the video quality, which focuses on the effects of computation precision by combining subjective-objective metric. The motivation behind the research is to bring quality-driven design into effect for video applications. We change the computation-precision of IDCT, the kernel program of MPEG-2 video decoder and get the experimental computation-precision-oriented video quality m...

Since traditional two dimensional video quality metrics are not suitable for evaluating stereo video, a new stereo video quality metric based on support vector regression (SVR) for three dimensional video systems is proposed in this paper. Firstly, three factors affecting the quality of stereo video are analyzed, namely left-view video quality, right-view video quality and difference between tw...

Establishing and sustaining very high data quality in complex data environments is expensive and often practically impossible. Quantitative assessments of quality can provide important inputs for prioritizing improvement efforts. This study explores a methodology that evaluates both impartial and utility-driven assessments of data quality. Impartial assessments evaluate and measure the extent t...

We propose a new method for the visual quality assessment of 360-degree (omnidirectional) videos. The proposed is based on computing multiple spatio-temporal objective features viewports extracted from A model learnt to properly combine these into metric that closely matches subjective scores. main motivations approach are that: 1) metrics computed better captures user experience than projectio...

We are concerned about the problem of transmitting constant quality video over the B-ISDN. A gain in channel utilization is achieved when several Variable Bit Rate video sources share a common ATM connection. To achieve such gain, the impact of cell losses on video quality degradation should be considered. Multi-layered video coding has proved to tolerate more cell losses than non-layered video...