کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
538282 871073 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Human observer confidence in image quality assessment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
Human observer confidence in image quality assessment
چکیده انگلیسی

Mean opinion scores obtained from subjective quality assessment are widely used as a ground truth for the development of predictive quality models. The underlying variance between observer ratings is typically quantified using confidence intervals, which do not provide any direct insight into the underlying causes of the disagreement. For better understanding of human visual quality perception and to develop more accurate models, it is important to identify the factors that impact on the variations in quality ratings. This work considers one such factor: observer confidence. This consideration is motivated by the view that quality assessment is a difficult task and hence quality ratings are provided with varying levels of confidence. The first goal of this paper is to analyse the results of an experiment to determine association between observer confidence and image quality judgement. Secondly, models are developed that aim to predict mean observer confidence as a complementary measure to the widely used mean opinion scores. It is shown that there is indeed a strong interrelation between quality perception and confidence, resulting in predictive models of high accuracy.


► Observer confidence is highly correlated to quality ratings.
► Reaction times are directly related to the difficulty of quality judgment.
► Observer confidence is just one source of variance in confidence intervals.
► Observer confidence can be predicted based on reactions times and quality ratings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing: Image Communication - Volume 27, Issue 9, October 2012, Pages 935–947
نویسندگان
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