Clarifying how defocus blur and disparity affect the perceived depth - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2011

Clarifying how defocus blur and disparity affect the perceived depth

Junle Wang
  • Fonction : Auteur correspondant
  • PersonId : 890939

Connectez-vous pour contacter l'auteur
Marcus Barkowsky
Vincent Ricordel
Patrick Le Callet
IVC

Résumé

Human visual system takes advantage of different cues simultaneously to provide us the perception of depth. When 3D images are shown on a planar stereoscopic display, binocular disparity becomes a pre-eminent depth cue. But it induces simultaneously the conflict between accommodation and vergence, which is often considered as a main reason for visual discomfort. If we limit this visual discomfort by decreasing the disparity, the apparent depth also decreases. We propose to decrease the (binocular) disparity of 3D presentations, and to reinforce (monocular) cues to compensate the loss of perceived depth and keep an unaltered apparent depth. The influence of a monocular depth cue, blur, on the apparent depth of stereoscopic scenes was studied in our recent work. We conducted a subjective experiment using a two-alternative forced choice task. Observers were required to identify the larger perceived depth in a pair of 3D images with/without blur. By fitting the result to a psychometric function, we obtained points of subjective equality in terms of disparity. We found that when blur is added to the background of the image, the viewer can perceive larger depth comparing to the images without any blur in the background. The increase of perceived depth can be considered as a function of the relative distance between the foreground and background, while it is insensitive to the distance between the viewer and the depth plane at which the blur is added.
Fichier principal
Vignette du fichier
SIFWICT2011_JunleWANG_final_v2-1.pdf (93.9 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00735782 , version 1 (26-09-2012)

Identifiants

  • HAL Id : hal-00735782 , version 1

Citer

Junle Wang, Marcus Barkowsky, Vincent Ricordel, Patrick Le Callet. Clarifying how defocus blur and disparity affect the perceived depth. First Sino-French Workshop on Education and Research collaborations in Information and Communication Technologies, May 2011, Nantes, France. pp.1-2. ⟨hal-00735782⟩
410 Consultations
314 Téléchargements

Partager

Gmail Facebook X LinkedIn More