Multi-view wire art

Abstract

Wire art is the creation of three-dimensional sculptural art using wire strands. As the 2D projection of a 3D wire sculpture forms line drawing patterns, it is possible to craft multi-view wire sculpture art --- a static sculpture with multiple (potentially very different) interpretations when perceived at different viewpoints. Artists can effectively leverage this characteristic and produce compelling artistic effects. However, the creation of such multi-view wire sculpture is extremely time-consuming even by highly skilled artists. In this paper, we present a computational framework for automatic creation of multi-view 3D wire sculpture. Our system takes two or three user-specified line drawings and the associated viewpoints as inputs. We start with producing a sparse set of voxels via greedy selection approach such that their projections on the virtual cameras cover all the contour pixels of the input line drawings. The sparse set of voxels, however, do not necessary form one single connected component. We introduce a constrained 3D pathfinding algorithm to link isolated groups of voxels into a connected component while maintaining the similarity between the projected voxels and the line drawings. Using the reconstructed visual hull, we extract a curve skeleton and produce a collection of smooth 3D curves by fitting cubic splines and optimizing the curve deformation to best approximate the provided line drawings. We demonstrate the effectiveness of our system for creating compelling multi-view wire sculptures in both simulation and 3D physical printouts.

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.…”

“…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 also relates to Sakurai et al [2018].…”

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

“…Further, Suzuki et al proposed a method that uses wires to form user-specified line drawings from different viewpoints using two-line drawing images and a user-provided viewpoint as input [29]. Hsiao et al recently developed a computational framework to automatically create multi-view 3D wire sculptures using two or three user-specified line drawings and their related viewpoints as input [30]. These methods do not require the creation of shadows because the shape can be determined by the wire itself; they do not illuminate the light source and it is easier to modify the sculpture than Shadow Art.…”

Survey on computational 3D visual optical art design

“…Similar to the work of Mitra and Pauly, Hsiao et al[ 5 ] presented their algorithm for creating multi-view wire sculptures. Unlike Mitra and Pauly’s work, the inconsistent pixels in wire images cannot be eliminated by deforming images.…”