Computational design of stable planar-rod structures

Miguel, Eder; Lepoutre, Mathias; Bickel, Bernd

doi:10.1145/2897824.2925978

Cited by 41 publications

(16 citation statements)

References 39 publications

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“…While the previous method is designed to produce 2D designs, the method of Miguel et al . [MLB16] creates 3D illustrative shape reproduction by the planar bending of metallic rods, achievable with a 2D wire‐bending machine. Starting from an input 3D model and a set of planar cross‐sectional contours, the system automatically computes a stable, self‐supporting wire sculpture.…”

Section: Shapesmentioning

confidence: 99%

State of the Art on Stylized Fabrication

Bickel

Cignoni

Malomo

et al. 2018

Computer Graphics Forum

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Digital fabrication devices are powerful tools for creating tangible reproductions of 3D digital models. Most available printing technologies aim at producing an accurate copy of a tridimensional shape. However, fabrication technologies can also be used to create a stylistic representation of a digital shape. We refer to this class of methods as ‘stylized fabrication methods’. These methods abstract geometric and physical features of a given shape to create an unconventional representation, to produce an optical illusion or to devise a particular interaction with the fabricated model. In this state‐of‐the‐art report, we classify and overview this broad and emerging class of approaches and also propose possible directions for future research.

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Section: Shapesmentioning

confidence: 99%

State of the Art on Stylized Fabrication

Bickel

Cignoni

Malomo

et al. 2018

Computer Graphics Forum

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“…Regular wire meshes are used in [GSFD*14] to represent freeform surfaces, but again, a fabricated 3D reference model is needed to guide the forming deformation of the wire mesh. An assembly of planar wire shapes has been used to create stable structures in [MLB16]. Existing methods use simply bent wires, but due to the limitations of currently available consumer‐grade wire bending machines, it is not possible to produce springs like the ones presented in this paper.…”

Section: Related Workmentioning

confidence: 99%

Packable Springs

Wolff

Poranne

Glauser

et al. 2018

Computer Graphics Forum

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Laser cutting is an appealing fabrication process due to the low cost of materials and extremely fast fabrication. However, the design space afforded by laser cutting is limited, since only flat panels can be cut. Previous methods for manufacturing from flat sheets usually roughly approximate 3D objects by polyhedrons or cross sections. Computational design methods for connecting, interlocking, or folding several laser cut panels have been introduced; to obtain a good approximation, these methods require numerous parts and long assembly times. In this paper, we propose a radically different approach: Our approximation is based on cutting thin, planar spirals out of flat panels. When such spirals are pulled apart, they take on the shape of a 3D spring whose contours are similar to the input object. We devise an optimization problem that aims to minimize the number of required parts, thus reducing costs and fabrication time, while at the same time ensuring that the resulting spring mimics the shape of the original object. In addition to rapid fabrication and assembly, our method enables compact packaging and storage as flat parts. We also demonstrate its use for creating armatures for sculptures and moulds for filling, with potential applications in architecture or construction.

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“…However, their method assumes that the curves are planar and fully visible in the single image input. Miguel et al (2016) present an interactive system to convert a closed surface mesh to a self-supporting wire sculpture. While both approaches explore similar characteristics of wire objects, e.g., simplicity, they fundamentally focus on a different problem of bringing digital designs into life.…”

Section: Related Workmentioning

confidence: 99%

“…This refinement step helps to fill small gaps along paths caused by insufficient image information and results in high fidelity reconstructions as shown in Figure 1. Such reconstructions enable easy manipulation or recreation using wire bending machines (Miguel et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Image-based reconstruction of wire art

et al. 2017

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Fig. 1. We present an image-based method to reconstruct wire objects from a few input images (3 views in our experiments). Our reconstructions faithfully capture both the 3D geometry and the topology of the wires.Objects created by connecting and bending wires are common in furniture design, metal sculpting, wire jewelery, etc. Reconstructing such objects with traditional depth and image based methods is extremely difficult due to their unique characteristics such as lack of features, thin elements, and severe self-occlusions. We present a novel image-based method that reconstructs a set of continuous 3D wires used to create such an object, where each wire is composed of an ordered set of 3D curve segments. Our method exploits two main observations: simplicity -wire objects are often created using only a small number of wires, and smoothness -each wire is primarily smoothly bent with sharp features appearing only at joints or isolated points. In light of these observations, we tackle the challenging image correspondence problem across featureless wires by first generating multiple candidate 3D curve segments and then solving a global selection problem that balances between image and smoothness cues to identify the correct 3D curves. Next, we recover a decomposition of such curves into a set of distinct and continuous wires by formulating a multiple traveling salesman problem, which finds smooth paths, i.e., wires, connecting the curves. We demonstrate our method © 2017 ACM. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in , https://doi.org/10.1145/nnnnnnn.nnnnnnn. on a wide set of real examples with varying complexity and present highfidelity results using only 3 images for each object.

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Computational design of stable planar-rod structures

Cited by 41 publications

References 39 publications

State of the Art on Stylized Fabrication

State of the Art on Stylized Fabrication

Packable Springs

Image-based reconstruction of wire art

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