Technical Papers

Sculpting, Stacking, Structure and Boxes

Friday, 30 November 09:00 - 10:45 |  Peridot 201

Sculpting by Numbers - Picture

Sculpting by Numbers

An approach that allows an unskilled user to sculpt an accurate physical replica of a digital 3D model. Guidance indicating how to adjust a sculpture to match a target 3D shape is projected onto the sculpture itself.


Alec Rivers, Massachusetts Institute of Technology
Andrew Adams, Massachusetts Institute of Technology
Fredo Durand, Massachusetts Institute of Technology


Stackabilization - Picture

Stackabilization

We introduce the geometric problem of stackabilization: how to geometrically modify a 3D object so that it is more amenable to stacking.


Honghua Li, Simon Fraser University
Ibraheem Alhashim, Simon Fraser University
Hao (Richard) Zhang, Simon Fraser University
Ariel Shamir, Interdisciplinary Center
Daniel Cohen-Or, Tel Aviv University


Structural Optimization of 3D Masonry Buildings - Picture

Structural Optimization of 3D Masonry Buildings

An approach to guide architectural forms toward more structurally sound shapes. We define a new measure of structural stability for masonry buildings as well as cables, and derive closed-form derivatives with respect to vertex displacement. We start with a gradient descent tool, then introduce displacement operators and additional objectives.


Emily Whiting, ETH Zurich
Hijung Shin, Massachusetts Institute of Technology
Robert Wang, Massachusetts Institute of Technology
John Ochsendorf, Massachusetts Institute of Technology
Fredo Durand, Massachusetts Institute of Technology


Fast oriented bounding box optimization on the rotation group SO(3, R) - Picture

Fast oriented bounding box optimization on the rotation group SO(3, R)

Algorithms computing minimal-volume OBBs are usually approximations or heuristics that may be far from optimal. The only exact algorithm (by
O'Rourke) is slow and hard to implement. We propose a hybrid method combining genetic and Nelder-Mead algorithms that appears to be faster or more reliable for any accuracy.


Chia-Tche Chang, Université catholique de Louvain
Samuel Melchior, Université catholique de Louvain
Bastien Gorissen, Cenaero