Fast hybrid simulation for accurate decoded video quality assessment on MPSoC platforms with resource constraints

Deepak Gangadharan, Samarjit Chakraborty, Roger Zimmermann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Multimedia decoders mapped onto MPSoC platforms exhibit degraded video quality when the critical system resources such as buffer and processor frequency are constrained. Hence, it is essential for system designers to find the appropriate mix of resources, living within the constraints, for a desired output video quality. A naive approach to do this would be to run expensive system simulations of the decoder tasks mapped onto a model of the underlying MPSoC architecture. This turns out to be inefficient when the input video library set has a large number of video clips. We propose a fast hybrid simulation framework to quantitatively estimate decoded video quality in the context of an MPEG-2 decoder. Here, the workload of simulation heavy tasks are estimated using accurate analytical models. The workload of other light (but difficult to analytically model) tasks are obtained from system simulations. This framework enables the system designer to perform a fast trade-off analysis of the system resources in order to choose the optimal combination of resources for the desired video quality. When compared to a naive system simulation approach, the hybrid simulation-based framework shows speed-up factors of about 5x for motion and 8x for still videos. The results obtained using this framework highlight important trade-offs such as the decoded video quality (measured in terms of the peak signal to noise ratio (PSNR)) vs buffer size and PSNR vs processor frequency.

Original languageEnglish
Title of host publication2011 16th Asia and South Pacific Design Automation Conference, ASP-DAC 2011
Pages237-242
Number of pages6
DOIs
StatePublished - 2011
Event2011 16th Asia and South Pacific Design Automation Conference, ASP-DAC 2011 - Yokohama, Japan
Duration: 25 Jan 201128 Jan 2011

Publication series

NameProceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC

Conference

Conference2011 16th Asia and South Pacific Design Automation Conference, ASP-DAC 2011
Country/TerritoryJapan
CityYokohama
Period25/01/1128/01/11

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