A Fast Algorithm of the Optimal Smoothing Scheme for Transmitting Stored Video

Wang, Zilei; Xi, Hongsheng; Wei, Guo

doi:10.1109/case.2009.24

Cited by 2 publications

(3 citation statements)

References 10 publications

(20 reference statements)

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“…But here we will focus only on the patient' perception for QoS. As regardless of the type of media (voice or video) there are different QoS requirements from the patient' point of view that determine whether the patient will accept this service or not, such as perception about video transmission delay and listening music online [16]. For more information look at …”

Section: General Quality Of Service (Qos)mentioning

confidence: 99%

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Medical Quality-of-Service Optimization in Wireless Telemedicine System Using Optimal Smoothing Algorithm

Hassan¹,

Li²

2013

ETSN

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In this paper we consider the transmission of stored video from a server to a client for medical applications such as, Tele-monitoring, to optimize medical quality of service (m-QoS) and to examine how the client buffer space can be used efficiently and effectively towards reducing the rate variability of the compressed variable bit rate (VBR) video. Three basic results are presented. First, we show how to obtain the greatest possible reduction in rate variability when sending stored video to client with a given buffer size. Second, how to reduce high peak data rate of compressed VBR video when a patient is moving/walking very fast in hospital. Third, we evaluate the impact of optimal smoothing algorithm on the network parameters such as, peak-to-mean ratio, standard deviation, delay, jitter, average delay and average jitter to optimize the m-QoS. To resolve these all problems we used optimal smoothing algorithm and show its performance over a set of long MPEG-4 encoded video traces. Simulation results show that m-QoS is optimized by minimizing network metrics.

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Section: General Quality Of Service (Qos)mentioning

confidence: 99%

“…[14,15] Presented online smoothing algorithm. Zilei Wang, et al [16] develop fast optimal smoothing algorithm for stored video. [17][18][19] discussed QoS requirements for general and medical applications respectively.…”

Section: Introductionmentioning

confidence: 99%

Medical Quality-of-Service Optimization in Wireless Telemedicine System Using Optimal Smoothing Algorithm

Hassan¹,

Li²

2013

ETSN

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“…In particular, the convex envelopes can fast check the linear separability through sequentially adding a pair of overflow and underflow points L i and U i at the same temporal point, which was proposed in our earlier paper as the envelop algorithm [23]. In this study, we use the algorithm to examine for the bounded points.…”

Section: Segmentationmentioning

confidence: 97%

A relaxing bandwidth smoothing schedule for transmitting prerecorded VBR video in periodic network

Wang

Wei

2010

Multimedia Systems

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Minimizing the number of bandwidth changes of individual stream and enabling the transmission schedule flexible can benefit increasing the number of concurrent multiplexed streams in periodic network without degrading quality of video. However, minimum change bandwidth allocation (MCBA) only provides a fixed transmission schedule for given video and client buffer although it achieves the minimum number of rate changes and the minimum peak rate. So the MCBA schedule cannot be adjusted when multiple streams are multiplexed over a limited bandwidth shared link. In this paper, we propose a relaxing transmission schedule that provides a range of rates for each interval and preserves the minimum number of rate changes without increasing any rate. As a result, the individual schedule can be adjusted by network service to try to satisfy bandwidth constraint when the total required bandwidth of multiplexed streams exceeds the available network capacity. First, we underline that the key of MCBA is to segment video with making each linear trajectory as long as possible. Then we use linear separability and support vector machine under the classification model to compute the longest interval and the required rate, respectively. Due to our proposed decoupled form between segmentation and rate computation, finally, we construct the relaxing schedule bounded by the original MCBA rate and the minimum rate. The simulation using real MPEG4 and H.264 video traces confirms the philosophy and evaluates the relaxing performance of our proposed algorithm.

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A Fast Algorithm of the Optimal Smoothing Scheme for Transmitting Stored Video

Cited by 2 publications

References 10 publications

Medical Quality-of-Service Optimization in Wireless Telemedicine System Using Optimal Smoothing Algorithm

Medical Quality-of-Service Optimization in Wireless Telemedicine System Using Optimal Smoothing Algorithm

A relaxing bandwidth smoothing schedule for transmitting prerecorded VBR video in periodic network

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