By Christian Keimel
ISBN-10: 1151151181
ISBN-13: 9781151151186
ISBN-10: 9811002681
ISBN-13: 9789811002687
ISBN-10: 981100269X
ISBN-13: 9789811002694
This e-book proposes a data-driven method utilizing multi-way info research for the layout of video-quality metrics. It additionally allows video- caliber metrics to be created utilizing arbitrary good points. this information- pushed layout strategy not just calls for no unique wisdom of the human visible approach, but additionally permits a formal attention of the temporal nature of video utilizing a three-way prediction version, resembling the three-way constitution of video. utilizing basic instance metrics, the writer demonstrates not just that this in basic terms info- pushed process outperforms state of the art video-quality metrics, that are frequently optimized for particular homes of the human visible approach, but additionally that multi-way facts research tools outperform the mix of two-way info research equipment and temporal pooling.
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Additional info for Design of Video Quality Metrics with Multi-Way Data Analysis: A data driven approach
Example text
One disadvantage of single stimulus methods, however, is their context dependency as they suffer from the sequential contraction bias: if the preceding test condition represented a high quality stimulus, the magnitude of the current stimulus’ quality is overestimated, and if the preceding test condition represented a low quality stimulus, the magnitude of the current stimulus’ quality is underestimated [264]. e. 500 suggests three repetitions of each test condition in a test session. 500 also recommends to consider the first presentation as a stabilisation and therefore discard it in the averaging.
This simple structure allows for short BTCs and with a video sequence length of 10 s, followed by a voting block of 5 s, each single stimulus BTC lasts 15 s. Hence, we are able to achieve 4 BTC/min and with a maximum test duration of 30 min, we can therefore present 120 different test conditions per test. One disadvantage of single stimulus methods, however, is their context dependency as they suffer from the sequential contraction bias: if the preceding test condition represented a high quality stimulus, the magnitude of the current stimulus’ quality is overestimated, and if the preceding test condition represented a low quality stimulus, the magnitude of the current stimulus’ quality is underestimated [264].
149, 150] have shown that crowdtesting can indeed provide results similar to the results from formal subjective testing in a laboratory environment. But as also discussed by Keimel et al. [148], many challenges still remain before crowdtesting is a universally acceptable replacement for formal subjective testing. For an in-depth discussion of and best practices for crowdtesting, I refer to Hoßfeld and Keimel [89] and Hossfeld et al. [92]. 2 Testing Methodologies Testing methods describe a set of certain aspects that define the test setup and process in detail.
Design of Video Quality Metrics with Multi-Way Data Analysis: A data driven approach by Christian Keimel
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