A lightweight approach to repairing digitized polygon meshes

Attene, Marco

doi:10.1007/s00371-010-0416-3

Cited by 213 publications

(172 citation statements)

References 21 publications

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“…We refer interested readers to the excellent survey of [4] and [2]. Most prevailing surface reconstruction methods rely on shape continuity to reconstruct or complete the underlying surface using smooth interpolation or extrapolation [5] [6]. In contrast to these works, our method targets one step further: we aim at recovering the underlying geometry along with the highlevel functionality of the input scans of mechanical assemblies.…”

Section: Related Workmentioning

confidence: 99%

Recovering Functional Mechanical Assemblies from Raw Scans

Lin

Shao

Zheng

et al. 2018

IEEE Trans. Visual. Comput. Graphics

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Abstract-This paper presents a method to reconstruct a functional mechanical assembly from raw scans. Given multiple input scans of a mechanical assembly, our method first extracts the functional mechanical parts using a motion-guided, patch-based hierarchical registration and labeling algorithm. The extracted functional parts are then parameterized from the segments and their internal mechanical relations are encoded by a graph. We use a joint optimization to solve for the best geometry, placement, and orientation of each part, to obtain a final workable mechanical assembly. We demonstrated our algorithm on various types of mechanical assemblies with diverse settings and validated our output using physical fabrication.

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Section: Related Workmentioning

confidence: 99%

Recovering Functional Mechanical Assemblies from Raw Scans

Lin

Shao

Zheng

et al. 2018

IEEE Trans. Visual. Comput. Graphics

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“…The mesh resolution is determined by the octree level, chosen according to the user-defined spatial resolution. Unlike a direct mesh generation process, which usually requires mesh editing operations such as filtering and refinement [45,46], Poisson algorithm directly encloses a smoothing step and provides a continuous geometry. This process could be controlled by some computation parameters as the minimum number of sample points that should fall within a node of the resulting octree.…”

Section: Simplification and Optimizationmentioning

confidence: 99%

A Multi-Data Source and Multi-Sensor Approach for the 3D Reconstruction and Web Visualization of a Complex Archaelogical Site: The Case Study of “Tolmo De Minateda”

et al. 2016

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Abstract:The complexity of archaeological sites hinders creation of an integral model using the current Geomatic techniques (i.e., aerial, close-range photogrammetry and terrestrial laser scanner) individually. A multi-sensor approach is therefore proposed as the optimal solution to provide a 3D reconstruction and visualization of these complex sites. Sensor registration represents a riveting milestone when automation is required and when aerial and terrestrial datasets must be integrated. To this end, several problems must be solved: coordinate system definition, geo-referencing, co-registration of point clouds, geometric and radiometric homogeneity, etc. The proposed multi-data source and multi-sensor approach is applied to the study case of the "Tolmo de Minateda" archaeological site. A total extension of 9 ha is reconstructed, with an adapted level of detail, by an ultralight aerial platform (paratrike), an unmanned aerial vehicle, a terrestrial laser scanner and terrestrial photogrammetry. Finally, a mobile device (e.g., tablet or smartphone) has been used to integrate, optimize and visualize all this information, providing added value to archaeologists and heritage managers who want to use an efficient tool for their works at the site, and even for non-expert users who just want to know more about the archaeological settlement.

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“…Usually, these meshes present a non-manifold structure, which implies a low quality product with non-natural triangles which hinder the NURBs' generation. In order to minimize this drawback we use a topological reconstruction, which generates a maniflod mesh, based on the approach defined by [38].…”

Section: Analysis Of the Current Stability Of The Construction Basedmentioning

confidence: 99%

Photogrammetric, Geometrical, and Numerical Strategies to Evaluate Initial and Current Conditions in Historical Constructions: A Test Case in the Church of San Lorenzo (Zamora, Spain)

et al. 2016

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Identifying and quantifying the potential causes of damages to a construction and evaluating its current stability have become an imperative task in today's world. However, the existence of variables, unknown conditions and a complex geometry hinder such work, by hampering the numerical results that simulate its behavior. Of the mentioned variables, the following can be highlighted: (i) the lack of historical information; (ii) the mechanical properties of the material; (iii) the initial geometry and (iv) the interaction with other structures. Within the field of remote sensors, the laser scanner and photogrammetric systems have become especially valuable for construction analysis. Such sensors are capable of providing highly accurate and dense geometrical data with which to assess a building's condition. It is also remarkable, that the latter provide valuable radiometric data with which to identify the properties of the materials, and also evaluate and monitor crack patterns. Motivated by this, the present article investigates the potential offered by the combined use of photogrammetric techniques (DIC and SfM), as well as geometrical (NURBs and Hausdorff distance) and numerical strategies (FEM) to assess the origin of the damage (through an estimation of the initial conditions) and give an evaluation of the current stability (considering the deformation and the damage).

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A lightweight approach to repairing digitized polygon meshes

Cited by 213 publications

References 21 publications

Recovering Functional Mechanical Assemblies from Raw Scans

Recovering Functional Mechanical Assemblies from Raw Scans

A Multi-Data Source and Multi-Sensor Approach for the 3D Reconstruction and Web Visualization of a Complex Archaelogical Site: The Case Study of “Tolmo De Minateda”

Photogrammetric, Geometrical, and Numerical Strategies to Evaluate Initial and Current Conditions in Historical Constructions: A Test Case in the Church of San Lorenzo (Zamora, Spain)

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