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We present an augmented airbrush that allows novices to experience the art of spray painting. Inspired by the thriving field of smart tools, our handheld device uses 6DOF tracking; augmentation of the airbrush trigger; and a specialized algorithm to restrict the application of paint to a preselected reference image. Our device acts both as a physical spraying device and as an intelligent assistive tool, providing simultaneous manual and computerized control. Unlike prior art, here the virtual simulation guides the physical rendering (inverse rendering), allowing for a new spray painting experience with singular physical results. We present our novel hardware design, control software, and a user study that verifies our research objectives.

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In this paper we explore human-computer interaction for carving, building upon our previous work with the FreeD digital sculpting device. We contribute a new tool design (FreeD V2), with a novel set of interaction techniques for the fabrication of static models: personalized toolpaths, manual overriding, and physical merging of virtual models. We also present techniques for fabricating dynamic models, which may be altered directly or parametrically during fabrication. We demonstrate a semi-autonomous operation and evaluate the performance of the tool. We end by discussing synergistic cooperation between human and machine to ensure accuracy while preserving the expressiveness of manual practice.

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