Measuring ATM video quality of service using an objective picture quality model
نویسندگان
چکیده
End-to-end quality of service for real-time video delivery over ATM networks depends on both video coding and network performance. Historical measures of QoS for data services have involved packet delivery parameters such as cell loss and delay, but these are not directly representative of a user's perception of the delivered video quality. To this end, this paper describes the use of a video quality measurement scheme that employs a human vision based picture quality model to objectively estimate end-user video quality. We present results to demonstrate that the video quality analysis based approach can be used to determine performance characteristics for distribution-quality video coding parameters over ATM networks.
منابع مشابه
Evaluation of codec behavior in IP and ATM networks
As multimedia applications are becoming more and more widespread there is a need for video data to be transmitted over IP as well as ATM networks. While ATM with its Quality of Service features is able to provide adequate transmission guarantees for the strong time and bandwidth constraints of video data, the transfer of video over IP networks is an issue wherever ATM is not available and appli...
متن کاملQuality Control for VBR Video over ATM Networks
Uncontrolled variable-bit-rate (VBR) coded video yields consistent picture quality, but the traffic stream is very bursty. When sent over ATM networks, cell losses may be incurred due to limited buffer capacity at the switches; this could cause severe picture quality degradation. Source rate control can be implemented to generate a controlled VBR bit stream which conforms to specified bit rate ...
متن کاملTowards An Efficient Best Effort Video Delivery Service
This paper addresses the transport of real-time multimedia traffic generated by MPEG-2 applications over ATM networks using an enhanced UBR best effort service (UBR+). It analyses the factors affecting the picture quality during transmission. Based on this analysis, we propose an efficient and cost-effective best effort delivery service. The proposed service integrates three components: An inte...
متن کاملMeasuring Service Quality of Islamic Azad University of Mazandaran using SERVQUAL Model
The purpose of the study is to evaluate the service quality of Islamic Azad University of Mazandaran. The study was a descriptive survey. The statistical population consists of all Islamic Azad University students of Mazandaran and 373 students were chosen through stratified random sampling method as the sample of the study. The data were collected using the SERVQUAL standardized questionnaire....
متن کاملMPEG Video and ATM Network Cell Loss: Analysis and Experimentation
The goal of this paper is to evaluate the effect of ATM network cell loss on the playback quality of transmitted MPEG video. The MPEG format and its susceptibility to data corruption is analyzed to calculate a theoretical statistical data corruption per cell loss measure. Experiments are run using an ATM network simulator with actual MPEG video to measure the effect of cell loss rate and bursti...
متن کامل