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Multimedia Tools and Applications

, Volume 49, Issue 3, pp 425–445 | Cite as

Foveated mean squared error—a novel video quality metric

  • Snježana Rimac-DrljeEmail author
  • Mario Vranješ
  • Drago Žagar
Article

Abstract

Efficiency of a video coding process, as well as accuracy of an objective video quality evaluation can be significantly improved by introduction of the human visual system (HVS) characteristics. In this paper we analyze one of these characteristics; namely, visual acuity reduction due to the foveated vision and object movements in a video sequence. We propose a new video quality metric called Foveated Mean Squared Error (FMSE) that takes into account a variable resolution of the HVS across the visual field. The highest visual acuity is at the point of fixation that falls into fovea, an area at retina with the highest density of photoreceptors. Visual acuity decreases rapidly for image regions which are further with respect to the fixation point. FMSE also utilizes the effect of additional spatial acuity reduction due to motion in a video sequence. The quality measures calculated by FMSE have shown a high correlation with experimental results obtained by subjective video quality assessment.

Keywords

Foveated vision Retinal image velocity Spatio-temporal activity Subjective quality assessment Video quality metric 

Notes

Acknowledgements

This work is supported by the Croatian Ministry of Education, Science and Sports through the projects 165-0361630-1636 and 165-0362027-1479.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Snježana Rimac-Drlje
    • 1
    Email author
  • Mario Vranješ
    • 1
  • Drago Žagar
    • 1
  1. 1.Faculty of Electrical EngineeringUniversity J.J. Strossmayer in OsijekOsijekCroatia

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