Quan Huynh-Thu's research while affiliated with Technicolor and other places

... Human perception is known to be affected by low-level fea- tures, semantic information, personal preferences and personal attributes [1] [2]. Subjective quality assessment experiments conducted in controlled environments provide a way to un- derstand the aforementioned factors. ...

... In summary, reading duration, viewing distance, and ambient lighting are all factors that have been implicated in the development and progression of myopia (Vienne et al., 2014;Matsuo and Ohtsuki, 1992;Borsting et al., 2003). However, explanations for most of these factors are separate, unsystematic, and lack mathematical modeling. ...

... Table III shows the same analysis, using subjective data instead of objective data. It performs lab-to-lab comparisons using experiments that were conducted by six or more international labs: the common set from VQEG-HDTV [31] and VQEG-MM2 [6], [33]. We made lab-to-lab pairwise comparisons and then picked the median over all pairs. ...

... When the vergence angle changes due to shifts in visual attention within a shot, vergence movements are under the control of the viewer, and are driven by the understanding of the narrative and other cues in the visual scene (e.g. blur can influence where we look, Huynh-Thu, Vienne & Blondé, 2013). When a cut occurs, in contrast, the new fixation point will generally occur toward the position that is nearest the screen position of the previous fixation. ...

... Regarding future work, the authors highlight the need to investigate other quality parameters and to augment the experiment to VR where new perceptual phenomena may be observed. Given its importance within multimedia experiences, bit-rate has been involved as an audio quality parameter in many more cross-modality evaluations [22,42,43,49,59,87]. Many of these evaluations aim to determine the impact of audio-visual degradations on overall audiovisual quality using subjective and/or objective methods. ...

... Although substantial efforts have been expended to model overt attention, the effect and mechanism of stereovision on saliency have not been fully examined. Reports investigating how depth information affects human eye movements (Gautier & Le Meur, 2012;Huynh-Thu & Schiatti, 2011;Jansen et al., 2009;Khaustova et al., 2013;Lang et al., 2012) showed that humans tend to fixate similar locations in situations with or without binocular information. More specifically, the fixation locations are almost the same for 3D and 2D images in long observation windows (20 seconds) but different in short observation windows (about four or five seconds) (Gautier & Le Meur, 2012;Jansen et al., 2009;Khaustova et al., 2013). ...

... Answering this question depends on the physical properties of the generated visual stimuli related to the display technology and the specifics of human visual perception 3 . Therefore, assessing the ergonomics of 3D presenter tools has become essential in terms of depth perception and deployment of visual attention 4,5 . Visual search in 3D environment depends on depth perception 6,7 because it relies on our ability to selectively attend to certain features or objects in a visual scene and perceiving them, moreover, the depth cues have an essential role in depth judgment, and applying more depth cues results in more direct depth perception 8,9 . ...

... However, when optimizing test suites, there are risks associated with the possibility that defects will be contained in fragments that have been removed from the test suite. Besides, there are various laboratory factors, including, for example, screen size, lighting, viewer-to-screen distance, and so on [8]. ...

... For instance, since frames within shots, have similar spatial characteristics and the human visual system has different responses to spatio-temporal changes, then shots can be coded at variable frame rates. It is shown that, reducing the frame rates in some shots, hardly affects the perceptual video quality, but it can reduce the bitrate significantly [9]. Similarly, since frame-to-frame changes within a shot are low and only depend on the spatial characteristics of each scene, one can model a video stream, based on video shots [10]. ...

... The second category of stereoscopic distortions identified by Lambooij et al. (2009) is display-related distortions, including for example, the picket fence effect, image flipping and crosstalk. To various degrees, all 3DTV displays suffer from crosstalk, consisting in a stereoscopic artifact due to the leakage of one eye view into the other view (Khaustova, Blondé, Huynh-Thu, Vienne & Doyen, 2012). The presence of such distortion can lead to a decrease of both visual quality and visual comfort, and also affects perception of depth. ...