Designing Perspectively Correct Multiplanar Displays

Abstract

Abstract-Displays have remained flat and passive amidst the many changes in their fundamental technologies. One natural step ahead is to create displays that merge seamlessly in shape and appearance to one's natural surroundings. In this paper, we present a system to design, render to, and build view-dependent multiplanar displays, of arbitrary shape built using planar, polygonal facets. Our system provides high quality, interactive rendering of 3D environments to a head-tracked viewer on arbitrary planar display shapes. We develop a novel rendering scheme that creates exact image and depth at each display facet. The facets thus align exactly at boundaries without inconsistencies in comparison with existing methods. Our approach scales well to large numbers of display facets. This is achieved using a single-pass rendering of all facets using a parallel, per-frame, viewdependent binning and prewarping of scene triangles. The method places no constraints on the scene or display and allows for fully dynamic scenes to be rendered at high resolutions using a single pass of rasterization. These are implemented efficiently on the GPUs. A general realization of our system envisions a display of an arbitrary shape built using polygonal facets. The display is driven using one or more quilt images into which the the pixels are packed. We present a few prototype displays to establish the scalability of our system to different shapes, form factors, and complexity: from a cube made out of LCD panels to spherical/cylindrical projected setups to arbitrary complex shapes in simulation. Performance is shown in terms of both quality and rendering speeds of our system for increasing scene and display facet sizes. A subjective user study is also presented to evaluate the user experience using a walk-around display to a flat panel in a game-like setting. 3Index Terms-Non-rectangular displays, fish tank virtual reality, arbitrary shaped displays, 3D visualization, view-dependent rendering, fast culliung, user interaction.

3D Mobile Data Visualization

“…Recent examples of this are portable devices like the Cubee [80], its variations (e. g., [33,79]) and other fishtank devices (e. g., [51]). Other fishtank shapes have also been investigated (e. g., polyhedric or spheric screens [5,6,35,84]). Moving the device around does not have any impact on the visualized world, but the user can look at virtual information from different angles and thus leverage the shape of the device.…”

A Tangible Volume for Portable 3D Interaction

“…A similar device is gCubik [19], which uses autostereoscopic rendering instead of head tracking. Most of the above devices have a cuboid shape, as this is the easiest way to arrange conventional rectangular displays, but other shapes are possible-such as arbitrary polyhedra [8] or even a sphere [5].…”

A camera-based calibration for automotive augmented reality Head-Up-Displays

“…Technically, either symmetric viewing frustum rendering with homography based post-warping of the image or direct off-axis rendering with an asymmetrical frustum can be used as rendering mechanisms. In a recent work by Harish et al [20] these techniques were compared with respect to visual artifacts, rendering speed and effective image resolution and an 'outside-to-inside' multi-facet screen was realized.…”