Stereoscopic 3D Experience Optimization using Cropping and Warping

彬彬

Abstract

The purpose of this paper is to optimize the stereoscopic 3D experience

when users watch those contents. We propose two factors in

stereoscopic experience: visual fatigue and depth perception. In order

to optimize stereoscopic experience, we propose five principles

to reduce visual fatigue and enhance depth perception and implement

them by cropping and warping. Using our methods, timeconsuming

problems of existing view interpolation methods such

as camera calibration, accurate dense depth map, and inpainting

are avoided. We also design a GUI that enables users to efficiently

edit the stereoscopic video, optimize the stereoscopic experience,

and preview the stereoscopic result. The user study shows that our

method is successful in optimizing stereoscopic experience. One

example is shown in Figure 1.

Keywords: Stereoscopic, Visual fatigue, Depth perception

1 Stereoscopic 3D experience

Our methods to optimize stereoscopic 3D experience follow five

principles of human visual attention, which are supported by psychological

evidence [Teittinen ]. The five basic principles can be

classified into two main factors: visual fatigue reduction and depth

perception enhancement.

1.1 Visual Fatigue Reduction

Visual fatigue [Hung 2001] has been the subject of considerable

research in relation to stereoscopic displays. Three principles to

reduce visual fatigue are addressed here.

Convergence and accommodation are cues which happen at different

position when we watch stereoscopic images. Accommodation,

the real focus, is on the screen; while the convergence focuses

on the virtual point synthesized by two stereoscopic images. This

accommodation-convergence conflict causes visual fatigue. It can

be minimized by linear mapping the depth budget to the comfort

zone, the range that we can see stereoscopic images comfortably,

i.e., retinal disparities below 1 [Lambooij et al. 2009].

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