Computational Origami System Eos

Ida, Tetsuo; Takahashi, Hidekazu; Marin, Mircea; Kasem, A.; Ghourabi, Fadoua

doi:10.1201/b10653-30

Cited by 10 publications

(10 citation statements)

References 4 publications

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“…They also developed an interactive tool to convert a 3D model to a v-style paper pop-up. Research on the geometric conditions for the validity of paper pop-up is scarce, primarily because determining the foldability of a general pop-up is NP-hard [22].…”

Section: Computational Pop-upsmentioning

confidence: 99%

Generating animated paper pop-ups from the motion of articulated characters

Ruiz

Low

2015

Vis Comput

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Pop-up books are fascinating books comprised of paper pieces that pop out when opened to form interesting three-dimensional structures. But more than just reproducing 3D shapes, pop-up artists also use the movement of the paper pieces during the opening process to convey motion and produce some form of animation. Similarly, previous automated methods have focused on reproducing the 3D shape of an input mesh. In our work, we focus in recreating motion. We study the movement of the paper pieces of the different mechanisms used in pop-up structures to automatically design animated pop-ups. Our input is an animation file, containing a 3D character with an armature and motion. We map each of the linkage chains to a specific pop-up mechanism based on the type of motion it can produce. We then obtain the initial values of the parameters of the mechanisms, such as lengths and orientations of the patches, based on our formulations and parameter estimation. Subsequently, we utilize simulated annealing to search for a plausible layout from a valid configuration space. Finally, we produce a printable design layout of the animated pop-up.B Conrado Ruiz Jr.

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Section: Computational Pop-upsmentioning

confidence: 99%

Generating animated paper pop-ups from the motion of articulated characters

Ruiz

Low

2015

Vis Comput

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“…However, this condition is not automatically guaranteed by their system, and hence needs to be resolved by the user in a trial-and-failure manner. Note that, in general, deciding whether a given pop-up craft can be opened or closed is a NP-hard problem [Uehara and Teramoto 2006]. In our work, we proposed a sufficient condition that the layout can erect in a stable manner as the paper opens, and further provides an automatic algorithm that guarantees the satisfaction of the condition in the output.…”

Section: Related Workmentioning

confidence: 99%

Popup

Shen

Huang

et al. 2010

ACM Trans. Graph.

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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.

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“…However, this technique has its own drawbacks. The folding process occurs in a single step, which restricts possible geometries [16], and requiring substantial design time and skill to achieve the appropriate folding patterns. It also requires extra scaffold material, extra joints for out-ofplane features, and an additional fixing step to lock pop-up joints into place.…”

Section: Introductionmentioning

confidence: 99%

Mechanically programmed self-folding at the millimeter scale

Felton

Tolley

Wood

2014

2014 IEEE International Conference on Automation Science and Engineering (CASE)

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Abstract-Self-folding enables the fabrication of sophisticated shapes from planar materials without manual assembly. This capability is valuable at millimeter scales, where traditional manufacturing is difficult and expensive, and MEMS techniques are not well-suited to 3-D features with high aspect ratios. Automating the assembly process through self-folding also has the potential to speed up the manufacturing time and reduce labor costs. However, existing self-folding techniques are not capable of complex geometries at the millimeter scale. In this paper we present a self-folding composite that is capable of complex sub-centimeter structures and mechanisms. The selffolding pattern is mechanically programmed into the composite during fabrication, and folding is activated by heating the composite. We show that this technique is capable of feature sizes ranging from 1 to 20 mm, and can create both shapes and mechanisms. We demonstrate this with two self-folding pieces: a cube and a spherical five-bar linkage. These results demonstrate the potential for self-folding systems to be integrated with MEMS fabrication techniques to produce complex devices.

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Computational Origami System Eos

Cited by 10 publications

References 4 publications

Generating animated paper pop-ups from the motion of articulated characters

Generating animated paper pop-ups from the motion of articulated characters

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Mechanically programmed self-folding at the millimeter scale

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