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Constrained 3D sketching with haptics and active motion annotation

Onkar, Prasad S (2012) Constrained 3D sketching with haptics and active motion annotation. In: TMCE 2012, Ninth International Symposium on Tools and Methods of Competitive Engineering, May 7-11, 2012, Karlsurhe, Germany.

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Official URL: http://www.lecad.fs.uni-lj.si/tmce2006/2010/iiphon...


The aim of this work is to enable seamless transformation of product concepts to CAD models. This necessitates availability of 3D product sketches. The present work concerns intuitive generation of 3D strokes and intrinsic support for space sharing and articulation for the components of the product being sketched. Direct creation of 3D strokes in air lacks in precision, stability and control. The inadequacy of proprioceptive feedback for the task is complimented in this work with stereo vision and haptics. Three novel methods based on pencil-paper interaction analogy for haptic rendering of strokes have been investigated. The pen-tilt based rendering is simpler and found to be more effective. For the spatial conformity, two modes of constraints for the stylus movements, corresponding to the motions on a control surface and in a control volume have been studied using novel reactive and field based haptic rendering schemes. The field based haptics, which in effect creates an attractive force field near a surface, though non-realistic, provided highly effective support for the control-surface constraints. The efficacy of the reactive haptic rendering scheme for the constrained environments has been demonstrated using scribble strokes. This can enable distributed collaborative 3D concept development. The notion of motion constraints, defined through sketch strokes enables intuitive generation of articulated 3D sketches and direct exploration of motion annotations found in most product concepts. The work, thus, establishes that modeling of the constraints is a central issue in 3D sketching.

Item Type: Conference Paper
Publisher: University of Technology
Additional Information: Copyright of this article belongs to University of Technology.
Keywords: Early Design Support; 3D Sketching; Stroke Groping; Haptic Constraints; Active Motion Annotation
Department/Centre: Division of Mechanical Sciences > Centre for Product Design & Manufacturing
Date Deposited: 12 Mar 2014 05:53
Last Modified: 12 Mar 2014 05:53
URI: http://eprints.iisc.ac.in/id/eprint/48606

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