Processing range data for reverse engineering and virtual reality

Karbacher, Stefan; Laboureux, Xavier; Schön, Nikolaus; Häusler, Gerd

doi:10.1109/im.2001.924467

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…After point cloud calculation the three range images are defined in their local camera coordinate systems and therefore have to be transformed into a common world coordinate system before they can be merged into one final dataset [4,5]. This so-called "registration" process is performed in two steps (Fig.…”

Section: Registrationmentioning

confidence: 99%

“…The meshes are smoothed then, holes are closed, measurement artifacts like outliers are removed and they are curvature dependently thinned in order to save memory and processing time. Then they are merged into one single mesh [5]. Finally, a special texture image that contains only relevant texture data and compensates the brightness differences in the transition regions between the different views is generated and mapped onto it [7] (Figs.…”

Section: Mesh Reconstruction and Texture Mappingmentioning

confidence: 99%

See 1 more Smart Citation

FaceSCAN3D - Photorealistic 3D Images for Medical Applications

Karbacher¹,

Veit²

2014

Proceedings of the 5th International Conference on 3D Body Scanning Technologies, Lugano, Switzerland, 21-22 October 2014

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We present a technology for the creation of 3d-surface data of human faces. The radiation free technique enables the data acquisition in approx. 400 msec. The robust measurement principle uses the projection of sinusoidal fringe patterns to create three point clouds. The patented mirror setup allows to scan the patient easily from ear to ear. The data processing starts with the fully-automatic and accurate alignment of the three point clouds. Sophisticated pre-and post-processing algorithms enable then the creation of a curvature dependent thinned triangular mesh. Finally, a high-resolution 2d image is mapped to the mesh with sub-pixel accuracy to create a photo-realistic representation of the patient's face. Especially in a clinical environment the acceptance of new equipment depends strongly on the convenience of the handling of the device. The FaceSCAN 3D 's simple user interface makes this as easy as using a digital camera. Operating the scanner can be learned in less than 20 minutes. The data can be exported in a variety of formats suitable for importing into analysis software. The applications range from radiation-free cephalometrics to overlay with CBCT data. The FaceSCAN 3D data is an additional channel for the surgeon not only to do state-of-the art patient education but also gives him the possibility to plan his operations based on what we call a virtual patient model. An accurate before-after comparison enables quality control of the outcome of the surgery. In this paper the basics of our measurement principle are explained. After a short course about 3d data processing we focus on two interesting applications.

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Section: Registrationmentioning

confidence: 99%

Section: Mesh Reconstruction and Texture Mappingmentioning

confidence: 99%

FaceSCAN3D - Photorealistic 3D Images for Medical Applications

Karbacher¹,

Veit²

2014

Proceedings of the 5th International Conference on 3D Body Scanning Technologies, Lugano, Switzerland, 21-22 October 2014

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“…It is successfully used in cultural heritage applications. [23][24][25] The application of this process to duplicating stamps is now discussed.…”

Section: Duplicationmentioning

confidence: 99%

Three-dimensional tools for analysis and conservation of ancient wooden stamps

Seulin¹,

Stolz²,

Fofi³

et al. 2006

The Imaging Science Journal

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This paper deals with the analysis and conservation of ancient wooden stamps from museum or library collections. The aim is to provide historians with tools that ease the process of handling and observation of very fragile and unique objects. By performing a threedimensional imaging of stamps, data are processed in three different ways: (1) adaptive thresholding on the corresponding range image enables visualization for the first time of an image of the actual print produced by the stamp; (2) interactive enhanced rendering provides a realistic and non-photorealistic interactive visualization; and, finally, (3) rapid prototyping production gives a perfect geometrical facsimile of the stamps, preventing any hazards inherent in the handling of the originals.

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Unstructured Computational Meshes for Subdivision Geometry of Scanned Geological Objects

Mezentsev

Munjiza

Latham

Proceedings of the 14th International Meshing Roundtable

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Processing range data for reverse engineering and virtual reality

Cited by 8 publications

References 11 publications

FaceSCAN3D - Photorealistic 3D Images for Medical Applications

FaceSCAN3D - Photorealistic 3D Images for Medical Applications

Three-dimensional tools for analysis and conservation of ancient wooden stamps

Unstructured Computational Meshes for Subdivision Geometry of Scanned Geological Objects

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