TY - GEN
T1 - Influence of viewing experience and stabilization phase in subjective video testing
AU - Keimel, Christian
AU - Redl, Arne
AU - Diepold, Klaus
PY - 2012
Y1 - 2012
N2 - In this contribution, we will examine two important aspects of subjective video quality assessment and their overall influence on the test results in detail: the participants' viewing experience and the quality range in the stabilization phase. Firstly, we examined if the previous viewing experience of participants in subjective tests influence the results. We performed a number of single- and double-stimulus tests assessing the visual quality of video material compressed with both H.264/AVC and MPEG2 not only at different quality levels and content, but also in different video formats from 576i up to 1080i. During these tests, we collected additional statistical data on the test participants. Overall, we were able to collect data from over 70 different subjects and analyse the influence of the subjects' viewing experience on the results of the tests. Secondly, we examined if the visual quality range presented in the stabilization phase of a subjective test has significant influence on the test results. Due to time constraints, it is sometimes necessary to split a test into multiple sessions representing subsets of the overall quality range. Consequently, we examine the influence of the quality range presented in the stabilization phase on the overall results, depending on the quality subsets included in the stabilization phase.
AB - In this contribution, we will examine two important aspects of subjective video quality assessment and their overall influence on the test results in detail: the participants' viewing experience and the quality range in the stabilization phase. Firstly, we examined if the previous viewing experience of participants in subjective tests influence the results. We performed a number of single- and double-stimulus tests assessing the visual quality of video material compressed with both H.264/AVC and MPEG2 not only at different quality levels and content, but also in different video formats from 576i up to 1080i. During these tests, we collected additional statistical data on the test participants. Overall, we were able to collect data from over 70 different subjects and analyse the influence of the subjects' viewing experience on the results of the tests. Secondly, we examined if the visual quality range presented in the stabilization phase of a subjective test has significant influence on the test results. Due to time constraints, it is sometimes necessary to split a test into multiple sessions representing subsets of the overall quality range. Consequently, we examine the influence of the quality range presented in the stabilization phase on the overall results, depending on the quality subsets included in the stabilization phase.
KW - Influence on subjective test results
KW - Stabilization phase
KW - Subjective testing
KW - Test design
KW - Viewing experience
KW - Visual quality assessment
UR - http://www.scopus.com/inward/record.url?scp=84856719876&partnerID=8YFLogxK
U2 - 10.1117/12.907967
DO - 10.1117/12.907967
M3 - Conference contribution
AN - SCOPUS:84856719876
SN - 9780819489401
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Image Quality and System Performance IX
T2 - Image Quality and System Performance IX
Y2 - 24 January 2012 through 26 January 2012
ER -