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Journal of Computing and Information Science in Engineering | Volume 12 | Issue 2 | Technical Brief
Technical Briefs

Augmented Technical Drawings: A Novel Technique for Natural Interactive Visualization of Computer-Aided Design Models

[+] Author and Article Information
Michele Fiorentino, Antonio E. Uva, Giuseppe Monno

Dipartimento di Ingegneria Meccanica e Gestionale, Politecnico di Bari, 70126, Bari, Italyfiorentino@poliba.it

Rafael Radkowski

Heinz Nixdorf Institute,  University of Paderborn, 33102, Paderborn, Germanyrafael.radkowski@hni.uni-paderborn.de

J. Comput. Inf. Sci. Eng 12(2), 024503 (May 14, 2012) (8 pages) doi:10.1115/1.4006431 History: Received October 31, 2011; Revised March 13, 2012; Published May 14, 2012; Online May 14, 2012
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Engineering 3D models become complex that paper drawings representation and monitor/mouse navigation on a computer-aided design (CAD) system is difficult and also frustrating. We present a novel interface paradigm for natural interactive visualization. It incorporates augmented reality enhanced engineering drawings and natural and tangible interfaces. We embedded ID markers on technical drawings to provide CAD data retrieval and tangible navigation. A user gets access to the CAD navigation functions using the drawing itself as a tangible device. In addition, CAD functions are triggered with gestures recognized by a video camera. We performed a pilot test assessment with industrial engineers. The results demonstrate the feasibility and the effectiveness of these techniques.
Copyright © 2012 by American Society of Mechanical Engineers
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+Natural and tangible interfaces using the augmented technical drawings
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Natural and tangible interfaces using the augmented technical drawings
Figure 1

Natural and tangible interfaces using the augmented technical drawings

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+Visualization of the digital master using AR and the augmented technical drawing
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Visualization of the digital master using AR and the augmented technical drawing
Figure 2

Visualization of the digital master using AR and the augmented technical drawing

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+Overview of the visualization and interaction system
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Overview of the visualization and interaction system
Figure 3

Overview of the visualization and interaction system

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+Back side navigation by flipping the drawing
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Back side navigation by flipping the drawing
Figure 4

Back side navigation by flipping the drawing

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+Layer chips (left) and folding patterns (right) are utilized as tangible interface for data retrieval
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Layer chips (left) and folding patterns (right) are utilized as tangible interface for data retrieval
Figure 5

Layer chips (left) and folding patterns (right) are utilized as tangible interface for data retrieval

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+Natural selection of a 3D model
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Natural selection of a 3D model
Figure 6

Natural selection of a 3D model

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+Example of clutch pan: fist gesture activates 3D camera pan
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Example of clutch pan: fist gesture activates 3D camera pan
Figure 7

Example of clutch pan: fist gesture activates 3D camera pan

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+Example of clutch orbit: two fist gestures activate camera orbit
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Example of clutch orbit: two fist gestures activate camera orbit
Figure 8

Example of clutch orbit: two fist gestures activate camera orbit

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+One fist and one open hand gesture activates the zoom
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One fist and one open hand gesture activates the zoom
Figure 9

One fist and one open hand gesture activates the zoom

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+The shaking gesture activates the CAD assembly explosion
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The shaking gesture activates the CAD assembly explosion
Figure 10

The shaking gesture activates the CAD assembly explosion

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+(a) The example case 3D subassembly and (b) its augmented technical drawing
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(a) The example case 3D subassembly and (b) its augmented technical drawing
Figure 11

(a) The example case 3D subassembly and (b) its augmented technical drawing

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+The augmented technical drawing as seen in the HMD
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The augmented technical drawing as seen in the HMD
Figure 12

The augmented technical drawing as seen in the HMD

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+Pan and orbit operations facilitate the inspection from different point of views
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Pan and orbit operations facilitate the inspection from different point of views
Figure 13

Pan and orbit operations facilitate the inspection from different point of views

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+The user can select single subassemblies and parts and move them individually
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The user can select single subassemblies and parts and move them individually
Figure 14

The user can select single subassemblies and parts and move them individually

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+Assembly explosion function
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Assembly explosion function
Figure 15

Assembly explosion function

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+The user zoom a 3D model changing the distance between his/her hands
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The user zoom a 3D model changing the distance between his/her hands
Figure 16

The user zoom a 3D model changing the distance between his/her hands

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