TY  - GEN
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/15488/
SP  - 259
TI  - Unwrapping Highly-Detailed 3D Meshes of Rotationally Symmetric Man-Made Objects
PB  - ISPRS - International Society for Photogrammetry and Remote Sensing
T3  - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.
EP  - 264
A1  - Rieck, Bastian
A1  - Mara, Hubert
A1  - Krömker, Susanne
AV  - public
N1  - Creative Commons Attribution 3.0 License.

http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/II-5-W1/259/2013/isprsannals-II-5-W1-259-2013.html
Y1  - 2013///
ID  - heidok15488
N2  - Rotationally symmetric objects commonly occur at archæological finds. Instead of creating 2D images for documentation purposes by manual drawing or photographic methods, we propose a method based on digitally colored surface models that are acquired by 3D scanners, thereby including color information. We then transform these highly-detailed meshes using simple geometrical objects such as cones and spheres and unwrap the objects onto a plane. Our method can handle curved vessel profiles by dividing the surface into multiple segments and approximating each segment with a cone frustum that serves as an auxiliary surface. In order to minimize distortions, we introduce a simple quality measure based on distances of points to a fitted cone. We then extend our method to approximately spherical objects by fitting a sphere on the surface of the object and applying a map projection, namely the equirectangular projection known from cartography. Our implementation generates true-to-scale images from triangular meshes. Exemplary results demonstrate our methods on real objects, ranging from small and medium-sized objects such as clay cones from the Ancient Orient and figural friezes of Greek vessels to extremely large objects such as the remains of a cylindrical tower of Heidelberg Castle.

KW  - Archaeology
KW  -  Cultural Heritage
KW  -  Geometry
KW  -  High resolution
KW  -  Rendering
KW  -  Visualization
KW  -  Colour
ER  -