1. Le Callet P, Moller S, Perkis A: Qualinet white paper on definitions of quality of experience (2012). European Network on Quality of Experience in Multimedia Systems and Services (COST Action IC 1003), version 1.2. Lausanne: Qualinet; 2013.
2. Wang Z, Bovik AC, Lu L: Why is image quality assessment so difficult? IEEE Int. Conf. Acoust., Speech, Signal Process. 2002, 4: 3313-3316.
3. Winkler S: Digital video quality: vision models and metrics. Hoboken, New Jersey, USA: Wiley; 2005.
4. Wu HR, Rao KR: Digital Video Image Quality and Perceptual Coding (Signal Processing and Communications). London: CRC, Taylor and Francis Group; 2005.
5. Wang Z, Bovik A: Modern Image Quality Assessment (Synthesis Lectures on Image, Video, & Multimedia Processing). San Rafael, CA, USA: Morgan & Claypool; 2006.