Popup

Abstract

Figure 1: Given a 3D architectural model with user-specified backdrop and ground (left), our algorithm automatically creates a paper architecture approximating the model (mid-right, with the planar layout in mid-left), which can be physically engineered and popped-up (right). AbstractPaper architectures are 3D paper buildings created by folding and cutting. The creation process of paper architecture is often laborintensive and highly skill-demanding, even with the aid of existing computer-aided design tools. We propose an automatic algorithm for generating paper architectures given a user-specified 3D model. The algorithm is grounded on geometric formulation of planar layout for paper architectures that can be popped-up in a rigid and stable manner, and sufficient conditions for a 3D surface to be poppedup from such a planar layout. Based on these conditions, our algorithm computes a class of paper architectures containing two sets of parallel patches that approximate the input geometry while guaranteed to be physically realizable. The method is demonstrated on a number of architectural examples, and physically engineered results are presented.

A digital assistant for shading paper sketches

“…Software-based assistance used to help novice users create artwork is not a new concept in the computer graphics community. The level of support spans from assisting simple processes like sketching [1] and coloring [2], up to creating complex tasks like clay sculpting [3], making wire arts [4], wind-up toys [5], pop-up paper models [6], generating abstract 3D representations with planar sections [7] or pipes [8]. Computer assisted tools for developing art works like Deco [9], Weavy [10], the design of iris folding patterns [11] are also used to support artistic tasks.…”