By Christian Keimel

This publication proposes a data-driven technique utilizing multi-way information research for the layout of video-quality metrics. It additionally allows video- caliber metrics to be created utilizing arbitrary gains. this information- pushed layout process not just calls for no special wisdom of the human visible process, but in addition permits a formal attention of the temporal nature of video utilizing a three-way prediction version, equivalent to the three-way constitution of video. utilizing uncomplicated instance metrics, the writer demonstrates not just that this basically facts- pushed process outperforms state of the art video-quality metrics, that are frequently optimized for particular houses of the human visible procedure, but in addition that multi-way facts research tools outperform the mix of two-way information research tools and temporal pooling.

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Except for the distorted video, no further information is required to estimate the video quality. Therefore no-reference metrics can be considered the most universal class of metrics for practical applications. The downside of this universality, however, is that no feature comparison of distorted and undistorted version of the video can be used in the quality estimation and thus the features must be able to describe distortion adequately, irrespective of the content. 3 Evaluation of the State-of-the-Art In this section, I briefly review and evaluate the state-of-the-art in video quality metrics.

500 also recommends to consider the first presentation as a stabilisation and therefore discard it in the averaging. 910 suggest only two to four repetitions in total, but not for each test condition. Note, that with these repetitions the number of different test conditions per test is reduced accordingly. As a 26 2 Video Quality side effect, the multiple ratings of the same test condition can be used to assess the consistency of a subject’s rating as an indicator of their reliability [125]. 500 [115], two basic variants are suggested: variant I, the single stimulus (SS) method, and variant II, the single stimulus with multiple repetition (SSMR) method, where the later includes multiple repetitions of each test condition to minimise the context effect.

Common viewing distances are 3 H for HDTV [104] and 6 H for SDTV [103]. Instead of using an expensive reference monitor, a calibrated high-quality display can be a valid alternative as indicated by Keimel and Diepold [139]. 500 still requires a CRT display for the video quality evaluation, both a study by VQEG [334, Appendix VII] and Pinson and Wolf [253] have shown that the results gained with LCD displays are statistically equivalent to the results gained with CRTs. Therefore LCDs are a valid contemporary choice to replace the increasingly rare and outdated CRTs.

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