caa a22 4500 445297085 CHVBK 20180317142545.0 cr unu---uuuuu 170323e20100201xx s 000 0 eng 10.1007/s12243-009-0146-6 doi (NATIONALLICENCE)springer-10.1007/s12243-009-0146-6 Automated qualitative assessment of multi-modal distortions in digital images based on GLZ [Elektronische Daten] [Andrzej Głowacz, Michał Grega, Przemysław Gwiazda, Lucjan Janowski, Mikołaj Leszczuk, Piotr Romaniak, Simon Romano] This paper introduces a novel approach to a qualitative assessment of images affected by multi-modal distortions. The idea is to assess the image quality perceived by an end user in an automatic way in order to avoid the usual time-consuming, costly and non-repeatable method of collecting subjective scores during a psycho-physical experiment. This is achieved by computing quantitative image distortions and mapping results on qualitative scores. Useful mapping models have been proposed and constructed using the generalised linear model (GLZ), which is a generalisation of the least squares regression in statistics for ordinal data. Overall qualitative image distortion is computed based on partial quantitative distortions from component algorithms operating on specified image features. Seven such algorithms are applied to successfully analyse the seven image distortions in relation to the original image. A survey of over 12,000 subjective quality scores has been carried out in order to determine the influence of these features on the perceived image quality. The results of quantitative assessments are mapped on the surveyed scores to obtain an overall quality score of the image. The proposed models have been validated in order to prove that the above technique can be applied to automatic image quality assessment. Institut TELECOM and Springer-Verlag, 2009 Image quality nationallicence Image distortion nationallicence MOS nationallicence Mean opinion score nationallicence GLZ nationallicence Generalised linear models nationallicence Quality metrics nationallicence Głowacz Andrzej Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut Grega Michał Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut Gwiazda Przemysław Telekomunikacja Polska R&D, Warsaw, Poland aut Janowski Lucjan Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut Leszczuk Mikołaj Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut Romaniak Piotr Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut Romano Simon Computer Science Department, Universita' degli Studi di Napoli Federico II, Naples, Italy aut annals of telecommunications - annales des télécommunications Springer-Verlag 65/1-2(2010-02-01), 3-17 0003-4347 65:1-2<3 2010 65 12243 https://doi.org/10.1007/s12243-009-0146-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12243-009-0146-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Głowacz Andrzej Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut NATIONALLICENCE 700 1- Grega Michał Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut NATIONALLICENCE 700 1- Gwiazda Przemysław Telekomunikacja Polska R&D, Warsaw, Poland aut NATIONALLICENCE 700 1- Janowski Lucjan Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut NATIONALLICENCE 700 1- Leszczuk Mikołaj Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut NATIONALLICENCE 700 1- Romaniak Piotr Department of Telecommunications, AGH University of Science and Technology, Krakow, Poland aut NATIONALLICENCE 700 1- Romano Simon Computer Science Department, Universita' degli Studi di Napoli Federico II, Naples, Italy aut NATIONALLICENCE 773 0- annals of telecommunications - annales des télécommunications Springer-Verlag 65/1-2(2010-02-01), 3-17 0003-4347 65:1-2<3 2010 65 12243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer