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Sketching in three dimensions: A beautification scheme

Published online by Cambridge University Press:  05 December 2016

Sree Shankar  and
Rahul Rai
Sree Shankar
Affiliation:
University at Buffalo, State University of New York, Buffalo, New York, USA
Rahul Rai*
Affiliation:
University at Buffalo, State University of New York, Buffalo, New York, USA
*
Reprint requests to: Rahul Rai, University at Buffalo, SUNY, 318 Jarvis Hall, Buffalo, NY 14260, USA. E-mail: rahulrai@buffalo.edu
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Abstract

Primary among all the activities involved in conceptual design is freehand sketching. There have been significant efforts in recent years to enable digital design methods that leverage humans’ sketching skills. Conventional sketch-based digital interfaces are built on two-dimensional touch-based devices like sketchers and drawing pads. The transition from two-dimensional to three-dimensional (3-D) digital sketch interfaces represents the latest trend in developing new interfaces that embody intuitiveness and human–human interaction characteristics. In this paper, we outline a novel screenless 3-D sketching system. The system uses a noncontact depth-sensing RGB-D camera for user input. Only depth information (no RGB information) is used in the framework. The system tracks the user's palm during the sketching process and converts the data into a 3-D sketch. As the generated data is noisy, making sense of what is sketched is facilitated through a beautification process that is suited to 3-D sketches. To evaluate the performance of the system and the beautification scheme, user studies were performed on multiple participants for both single-stroke and multistroke sketching scenarios.

Keywords

Depth InformationDigital DesignThree-Dimensional Sketching
Type
Regular Articles
Information
AI EDAM , Volume 31 , Special Issue 3: Uncertainty Quantification for Engineering Design , August 2017 , pp. 376 - 392
Copyright
Copyright © Cambridge University Press 2016 

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