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Variance Analysis and Comparison in Computer-Aided Design

Ullrich, Torsten and Schiffer, Thomas and Schinko, Christoph and Fellner, Dieter W. (2011):
Variance Analysis and Comparison in Computer-Aided Design.
In: Proceedings of the 4th ISPRS International Workshop 3D-ARCH 2011, In: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences; XXXVIII-5/W16, [Conference or Workshop Item]

Abstract

The need to analyze and visualize differences of very similar objects arises in many research areas: mesh compression, scan alignment, nominal/actual value comparison, quality management, and surface reconstruction to name a few. In computer graphics, for example, differences of surfaces are used for analyzing mesh processing algorithms such as mesh compression. They are also used to validate reconstruction and fitting results of laser scanned surfaces. As laser scanning has become very important for the acquisition and preservation of artifacts, scanned representations are used for documentation as well as analysis of ancient objects. Detailed mesh comparisons can reveal smallest changes and damages. These analysis and documentation tasks are needed not only in the context of cultural heritage but also in engineering and manufacturing. Differences of surfaces are analyzed to check the quality of productions. Our contribution to this problem is a workflow, which compares a reference / nominal surface with an actual, laser-scanned data set. The reference surface is a procedural model whose accuracy and systematics describe the semantic properties of an object; whereas the laser-scanned object is a real-world data set without any additional semantic information.

Item Type: Conference or Workshop Item
Erschienen: 2011
Creators: Ullrich, Torsten and Schiffer, Thomas and Schinko, Christoph and Fellner, Dieter W.
Title: Variance Analysis and Comparison in Computer-Aided Design
Language: English
Abstract:

The need to analyze and visualize differences of very similar objects arises in many research areas: mesh compression, scan alignment, nominal/actual value comparison, quality management, and surface reconstruction to name a few. In computer graphics, for example, differences of surfaces are used for analyzing mesh processing algorithms such as mesh compression. They are also used to validate reconstruction and fitting results of laser scanned surfaces. As laser scanning has become very important for the acquisition and preservation of artifacts, scanned representations are used for documentation as well as analysis of ancient objects. Detailed mesh comparisons can reveal smallest changes and damages. These analysis and documentation tasks are needed not only in the context of cultural heritage but also in engineering and manufacturing. Differences of surfaces are analyzed to check the quality of productions. Our contribution to this problem is a workflow, which compares a reference / nominal surface with an actual, laser-scanned data set. The reference surface is a procedural model whose accuracy and systematics describe the semantic properties of an object; whereas the laser-scanned object is a real-world data set without any additional semantic information.

Series Name: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences; XXXVIII-5/W16
Uncontrolled Keywords: Forschungsgruppe Semantic Models, Immersive Systems (SMIS), Business Field: Virtual engineering, Business Field: Digital society, Business Field: Visual decision support, Computer aided design (CAD), Cultural heritage, Ray tracing, Ray casting, Reverse engineering, Visualization, Heightfield, Offset geometry
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Interactive Graphics Systems
Event Title: Proceedings of the 4th ISPRS International Workshop 3D-ARCH 2011
Date Deposited: 12 Nov 2018 11:16
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