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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2008 E91-A(6):1383-1391; doi:10.1093/ietfec/e91-a.6.1383
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Special Section on Image Media Quality - Papers

Image and Video Quality Assessment Using LCD: Comparisons with CRT Conditions

Sylvain TOURANCHEAU1, Patrick LE CALLET1 and Dominique BARBA1

1 The authors are with IRCCyN, University of Nantes, France. E-mail: sylvain.tourancheau{at}univ-nantes.fr; E-mail: patrick.lecallet{at}univ-nantes.fr


  Abstract

In this paper, the impact of display on quality assessment is addressed. Subjective quality assessment experiments have been performed on both LCD and CRT displays. Two sets of still images and two sets of moving pictures have been assessed using either an ACR or a SAMVIQ protocol. Altogether, eight experiments have been led. Results are presented and discussed, some differences are pointed out. Concerning moving pictures, these differences seem to be mainly due to LCD moving artefacts such as motion blur. LCD motion blur has been measured objectively and with psycho-physics experiments. A motion-blur metric based on the temporal characteristics of LCD can be defined. A prediction model have been then designed which predict the differences of perceived quality between CRT and LCD. This motion-blur-based model enables the estimation of perceived quality on LCD with respect to the perceived quality on CRT. Technical solutions to LCD motion blur can thus be evaluated on natural contents by this mean.

Key Words: subjective quality assessment, LCD motion blur, perception, measurements, displays

Manuscript received January 16, 2008.


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