Fabricating reflectors for displaying multiple images

Abstract

becomes a microstructure having color and height. We propose using these microstructures to formulate a method for designing spatially varying reflections that can display different target images when viewed from different directions. The microstructure is calculated by minimizing an objective function that measures the differences between the intensities of the light reflected from the reflector and that of the target image. We show several fabricated reflectors to demonstrate the usefulness of the proposed method.

Computational Parquetry: Fabricated Style Transfer with Wood Pixels

“…Real wood exhibits anisotropic BRDF characteristics, which means that rotation of a part could be used to modulate its intensity. This might also enable the generation of new types of puzzles, where a hidden pattern is revealed by the right permutation and rotation of some parts, comparable to the work of Sakurai et al [2018].…”

Computational Mirror Cup and Saucer Art

“…For the last couple of decades, computer graphics technologies have been successfully applied to the automatic design of various types of optical art, including caustics [Papas et al 2011;Schwartzburg et al 2014], relectance [Weyrich et al 2009], shadow [Mitra and Pauly 2009;Zhao et al 2016], etc. What's more, graphicsbased approaches can be used for designing a wide variety of optical art in which changes in viewpoint [Oliva et al 2006], igure-ground organization [Kuo et al 2016], illumination from a certain direction [Alexa and Matusik 2010;Bermano et al 2012], viewing directions [Keiren et al 2009;Pjanic and Hersch 2015;Sakurai et al 2018;Sela and Elber 2007;Snelgrove et al 2013], or casting shadows onto external planar surfaces [Hsiao et al 2018;Min et al 2017] can change the viewer's perception of an art piece. This work is close to [Mitra and Pauly 2009] and [Hsiao et al 2018], where 3D volumes are computed such that their shadows best approximate multiple input binary images.…”

“…This work is close to [Mitra and Pauly 2009] and [Hsiao et al 2018], where 3D volumes are computed such that their shadows best approximate multiple input binary images. This work also relates to Sakurai et al [2018]. In both works, the surface of an object is divided into sets of areas, with each set showing a separate image that can be appreciated from a speciic viewing setup.…”

A New Algorithm for Displaying Images With High Resolution Using a Directional Volumetric Display With Threads and a Projector

“…Viewpoint-dependent viewing can be accomplished by several techniques. Pjanic et al [23] and Sakurai et al [24] developed a technique for creating color patterns with varying hues when viewed from a different perspective. Ikeda et al also developed a system that uses a high-speed projector at 2,400 frames per second to project a specific image on a flat surface, which displays different images based on movement at a specific speed and direction [25].…”