Subjective evaluation and statistical analysis for improved frame-loss error concealment of 3D videos

Abstract

Broadcasting of high definition stereoscopic 3D videos is growing rapidly because of increased demand in the mass consumer market. In spite of increasing consumer interest, poor quality, crosstalk or side effects and lack of defined broadcast standards has hampered the advancement of 3D displays. Real time transmission of 3DTV sequences over packet based networks may result in visual quality degradation due to packet loss and delay. In conventional 2D videos, different extrapolation and directional interpolation strategies have been used for concealing the missing blocks but in 3D, this is still an emerging field of research. Also, subjective testing is the most direct way to evaluate 3D quality and human perception on the concealed videos. This paper reviews state-of-the-art error concealment strategies and proposes a low complexity frame loss concealment method for a video decoder. Subjective testing on common 3D video sequences and its statistical comparison with existing concealment methods shows that the proposed method is efficient for the concealment of error frames of stereoscopic videos in terms of visual comfort and 3D quality.

Binocular Rivalry Impact on Macroblock-Loss Error Concealment for Stereoscopic 3D Video Transmission

“…The chapter [ 28 ] provides a short description of recently developed 3D error hiding techniques. Our most recent research and experiment results [ 29 ], demonstrate that, in addition to transmission losses, using traditional 2D error concealment methods in a 3D video decoder also causes these artifacts and poses a perceptual challenge, necessitating an analysis to ascertain the psychovisual effects. We concentrate on creating network losses and using current error concealment technologies to evaluate their overall impact since the goal of this research was to ascertain the psychovisual impact of error concealment following the loss of one or more MBs.…”

Binocular Rivalry - Psychovisual Challenge in Stereoscopic Video Error Concealment

“…Other than the quantitative quality measures, very few studies have been conducted to subjectively analyze error concealed stereoscopic videos [1], [5], [6]. Our recent research findings [14] showed that not only transmission losses but also applying conventional 2D error concealment techniques in a 3D video decoder triggers such artefacts and presents a perceptual challenge that requires extensive analysis to determine the psycho-visual impacts.…”