Xiaoguang Wang, Allen R. Hanson, Robert T. Collins and Jeff DeHart,
"Surface Microstructure Extraction from Multiple Aerial Images",
Aerosense '97 - SPIE's 11th Annual International Symposium on
Aerosense/Defense Sensing, Simulation and Controls,
Orlando, FL, 1997.
In this paper we present a system that recovers building facet images from
multiple source images and, as a first step towards detailed analysis of
microstructures, extracts windows from walls. The system employs a
sophisticated multi-image texture mapping technique to eliminate the
corrupting effects of shadows and occlusions and to find a "best piece
representation" of each facet. The system is model-driven, providing a
context-based environment for microstructure analysis. The window
extraction module focuses attention on wall facets, attempting to extract
the 2-D window patterns attached to the walls using an oriented region
growing technique. High-level knowledge is incorporated to simplify the
computation of symbolic window extraction. The algorithms are typically
useful in urban sites. Experiments show successful applications of
this approach to site model refinement.
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