Towards occlusion-aware multifocal displays

Abstract

focus near (a) Scene (b) Standard multifocal display (d) Captured results of the same rendered scene transparent front focal plane

Exponentially-wide étendue displays using a tilting cascade

“…SLMs have a wide range of applications beyond the ones demonstrated in this paper. Piecewise linear phase modulators which expand the tilting range of these SLM can offer significant advances for many other tasks, such as multifocal displays [20], light sensitive displays [14], [22], Focal Surface displays [21], and high dynamic range displays [25], [26]. While these applications require large tilt angles, many of them involve piecewise smooth slopes as supported by our display, rather than highly varying phases.…”

“…As a result, next to depth discontinuous one does not get occlusion cues, and rather, depending on the viewing direction, content from different depth layers may overlap. Recently Chang et al [20] suggested a simple way to fix this, using a small pixel dependent tilt of the light cone in each image position. This tilt is implemented by co-locating a phase based SLM with a standard intensity display.…”

Multifocal Stereoscopic Projection Mapping

“…The VAC causes viewer fatigue and discomfort as well as distortions in the perceived depth [24,72]. Much research has been carried out in an attempt to solve the VAC issue in both VR and AR displays, which include varifocal displays (VR [32,36,38,55] and AR [1,10,15,18,30,75]), multifocal displays (VR [3,13,14,25,43,[50][51][52]61] and AR [4,16,41,42,44,60,65] ), light field displays (VR [23,26,39] and AR [46,48]), holographic displays (VR [11,12,49,58] and AR [30,47] ), and other display techniques, such as those that use color information [2,17]. Unfortunately, despite the substantial effort that has been put into solving the VAC for stereoscopic flat-panel displays and HMDs, researchers have not focused on the issue for stereoscopic PM.…”