Sculpting by numbers

Abstract

a) Target 3D model (b) Guidance projected onto material (c) Sculpted physical replica Figure 1: We assist users in creating physical objects that match digital 3D models. Given a target 3D model (a), we project different forms of guidance onto a work in progress (b) that indicate how it must be deformed to match the target model. As the user follows this guidance, the physical object's shape approaches that of the target (c). With our system, unskilled users are able to produce accurate physical replicas of complex 3D models. Here, we recreate the Stanford bunny model (courtesy of the Stanford Computer Graphics Laboratory) out of polymer clay. AbstractWe propose a method that allows an unskilled user to create an accurate physical replica of a digital 3D model. We use a projector/camera pair to scan a work in progress, and project multiple forms of guidance onto the object itself that indicate which areas need more material, which need less, and where any ridges, valleys or depth discontinuities are. The user adjusts the model using the guidance and iterates, making the shape of the physical object approach that of the target 3D model over time. We show how this approach can be used to create a duplicate of an existing object, by scanning the object and using that scan as the target shape. The user is free to make the reproduction at a different scale and out of different materials: we turn a toy car into cake. We extend the technique to support replicating a sequence of models to create stop-motion video. We demonstrate an end-to-end system in which real-world performance capture data is retargeted to claymation. Our approach allows users to easily and accurately create complex shapes, and naturally supports a large range of materials and model sizes.

Handwriting beautification using token means

“…In [Rivers et al 2012] they propose an interface for enabling an unskilled user to create a 3D physical replica of a 3D model. Teddy [Igarashi et al 1999], which was improved upon by [Karpenko and Hughes 2006], allows a user to create 3D objects by drawing a 2D sketch.…”

The Hybrid Artisans

“…Additional concepts assuming purely manual practice were previously implemented by 3D clay sculpting with bare hands or manual tools [Skeels and Rehg 2007;Rivers et al 2012a]. We found Copy-CAD by Follmer et al [2010] especially interesting, allowing users to copy 2D elements of physical objects, reassemble, and then fabricate these elements into a new 2D shape.…”

Human-computer interaction for hybrid carving

“…Relevant concepts in hybrid design and fabrication were previously implemented by digitally monitored 3D clay sculptTangible and Fabrication UIST'13, October 8-11, 2013, St. Andrews, UK ing with bare hands or manual tools [16,14]. We found CopyCAD by Follmer et al [7] especially interesting, as it allows users to copy 2D elements of physical objects, then reassemble and re-fabricate these elements in a new 2D shape.…”