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

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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Figure 1

Natural and tangible interfaces using the augmented technical drawings

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Figure 2

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

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Figure 3

Overview of the visualization and interaction system

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Figure 4

Back side navigation by flipping the drawing

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Figure 5

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

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Figure 6

Natural selection of a 3D model

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Figure 7

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

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Figure 8

Example of clutch orbit: two fist gestures activate camera orbit

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Figure 9

One fist and one open hand gesture activates the zoom

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Figure 10

The shaking gesture activates the CAD assembly explosion

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Figure 11

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

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Figure 12

The augmented technical drawing as seen in the HMD

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Figure 13

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

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Figure 14

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

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Figure 15

Assembly explosion function

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Figure 16

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



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