A batman to the rescue

Drumm, Patrick; Ovre, Christopher

doi:10.1037/e529422011-012

Cited by 2 publications

(2 citation statements)

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“…The main tools used in 3D digital fabrication are 3D printers and 5-axis CNC machines. Devices of both kinds are typically expensive, though recent efforts in the DIY community have made low-priced entry-level tools available [Hokanson and Reilly ;Kelly ;MakerBot Industries ;Drumm 2011;Sells et al 2009]. 3D printing and CNC methods are highly accurate, but suffer from fabrication artifacts, and are limited in the size and materials of the object they can produce.…”

Section: Related Workmentioning

confidence: 99%

Sculpting by numbers

Rivers¹,

Adams²,

Durand³

2012

ACM Trans. Graph.

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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.

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Section: Related Workmentioning

confidence: 99%

Sculpting by numbers

Rivers¹,

Adams²,

Durand³

2012

ACM Trans. Graph.

View full text Add to dashboard Cite

show abstract

“…Recently, a variety of efforts growing out of the DIY community have sought to reduce the cost of 3D printers [MakerBot Industries ;Drumm 2011;Sells et al 2009] and CNC mills [Hokanson and Reilly ; Kelly ]. These projects typically provide relatively cheap kits for entry-level devices.…”

Section: Related Workmentioning

confidence: 99%

Position-correcting tools for 2D digital fabrication

Rivers¹,

Moyer

Durand³

2012

TOG

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Figure 1: Overview: (a): A position-correcting tool. The device consists of a frame and a tool (in this case a router) mounted within that frame. The frame is positioned manually by the user. A camera on the frame (top right in the figure) is used to determine the frame's location. The device can adjust the position of the tool within the frame to correct for error in the user's coarse positioning. (b): To follow a complex path, the user need only move the frame in a rough approximation of the path. In this example, the dotted blue line shows the path that the tool would take if its position were not adjusted; the black line is its actual path. (c): An example of a shape cut out of wood using this tool. AbstractMany kinds of digital fabrication are accomplished by precisely moving a tool along a digitally-specified path. This precise motion is typically accomplished fully automatically using a computercontrolled multi-axis stage. With that approach, one can only create objects smaller than the positioning stage, and large stages can be quite expensive. We propose a new approach to precise positioning of a tool that combines manual and automatic positioning: in our approach, the user coarsely positions a frame containing the tool in an approximation of the desired path, while the device tracks the frame's location and adjusts the position of the tool within the frame to correct the user's positioning error in real time. Because the automatic positioning need only cover the range of the human's positioning error, this frame can be small and inexpensive, and because the human has unlimited range, such a frame can be used to precisely position tools over an unlimited range.

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A batman to the rescue

Cited by 2 publications

References 0 publications

Sculpting by numbers

Sculpting by numbers

Position-correcting tools for 2D digital fabrication

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