ABSTRACT
We present a scalable out-of-core technique for mapping colors from aerial oblique imagery to large scale aerial LiDAR (Light Detection and Ranging) point cloud. Our method does not require meshing or intensive processing of points, only fast and effective augmentation is applied to fill occluded points on building walls and under tree canopies. The presented system applies a modified visibility pass of GPU splatting to map colors, where occluded points are filtered out by projecting all points as oriented surface splats into images. A weighting scheme is utilized to accumulate colors from all contributing images while leveraging image resolution and surface orientation. The effectiveness of color mapping is demonstrated through visualizations of colored points by a GPU splatting algorithm.
- M. Dellepiane, M. Callieri, M. Corsini, P. Cignoni, and R. Scopigno. Improved color acquisition and mapping on 3d models via flash-based photography. J. Comput. Cult. Herit., 2(4):9:1--9:20, Mar. 2010. Google ScholarDigital Library
- C. Frueh, R. Sammon, and A. Zakhor. Automated texture mapping of 3d city models with oblique aerial imagery. In Proceedings of the 3D Data Processing, Visualization, and Transmission, 2nd International Symposium, 3DPVT '04, pages 396--403, Washington, DC, USA, 2004. IEEE Computer Society. Google ScholarDigital Library
- Z. Gao, L. Nocera, and U. Neumann. Visually-complete aerial lidar point cloud rendering. ACM SIGSPATIAL GIS, 2012. Google ScholarDigital Library
- H. K., S. T., K. K., and M. M. Combination of different surveying methods for archaeological documentation: the case study of the bronze age wooden chest from mitterberg. In Proceedings of the 38th Conference on Computer Applications and Quantitative Methods in Archaeology, Granada, Spain, 2010. IEEE Computer Society.Google Scholar
- B. Kovač and B. alik. Visualization of lidar datasets using point-based rendering technique. Comput. Geosci., 36(11):1443--1450, Nov. 2010. Google ScholarDigital Library
- C. A. Li-Chee-Ming J. Fusion of optical and terrestrial laser scanner data. In CD-ROM proceedings Canadian Geomatics Conference 2010 and ISPRS Com I Symposium, pages 156--161. ISPRS, March 2011.Google Scholar
- W. R. Mark, R. S. Glanville, K. Akeley, and M. J. Kilgard. Cg: a system for programming graphics hardware in a c-like language. In ACM SIGGRAPH 2003 Papers, SIGGRAPH '03, pages 896--907, New York, NY, USA, 2003. ACM. Google ScholarDigital Library
- A. Mastin, J. Kepner, and J. W. F. III. Automatic registration of lidar and optical images of urban scenes. In Proc. of IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 2639--2646. IEEE, 2009.Google ScholarCross Ref
- R. Pintus, E. Gobbetti, and M. Callieri. A streaming framework for seamless detailed photo blending on massive point clouds. In Proc. Eurographics Area Papers, pages 25--32, 2011.Google Scholar
- C. Scheiblauer, N. Zimmermann, and M. Wimmer. Interactive domitilla catacomb exploration. In K. Debattista, C. Perlingieri, D. Pitzalis, and S. Spina, editors, VAST, pages 65--72. Eurographics Association, September 2009. Google ScholarDigital Library
- L. Wang and U. Neumann. A robust approach for automatic registration of aerial images with untextured aerial lidar data. In Proc. of IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pages 2623--2630. IEEE, 2009.Google ScholarCross Ref
- Q. Wang and S. You. A vision-based 2d-3d registration system. In IEEE Workshop on Applications of Computer Vision (WACV), pages 1--8, Snowbird, Utah, USA, December 2009.Google ScholarCross Ref
Index Terms
- Fusing oblique imagery with augmented aerial LiDAR
Recommendations
Visually-complete aerial LiDAR point cloud rendering
SIGSPATIAL '12: Proceedings of the 20th International Conference on Advances in Geographic Information SystemsAerial LiDAR (Light Detection and Ranging) point clouds are gathered by a downward scanning laser on a low-flying aircraft. Due to the imaging process, vertical surface features such as building walls, and ground areas under tree canopies are totally or ...
Fast, Realistic Lighting for Video Games
Global lighting effects produced by diffuse interreflections are typically simulated using global illumination methods such as radiosity or ray tracing. Although diffuse interreflections are crucial to produce realistic images, radiosity like methods ...
A fast relighting engine for interactive cinematic lighting design
SIGGRAPH '00: Proceedings of the 27th annual conference on Computer graphics and interactive techniquesWe present new techniques for interactive cinematic lighting design of complex scenes that use procedural shaders. Deep-framebuffers are used to store the geometric and optical information of the visible surfaces of an image. The geometric information ...
Comments