Patent Number: 7,133,551

Title: Semi-automatic reconstruction method of 3-D building models using building outline segments

Abstract: A semi-automatic reconstruction method of 3-D building models using building outline segments is introduced. The core technology of the present invention is called the "Split-Merge-Shape" algorithm. The Split and Merge processes sequentially reconstruct the topology between any roof-edges of the buildings and then reform them as enclosed regions. The Shape process uses height information and consecutive-coplanar analysis to determine the shapes and heights of the roofs. After generating polyhedral building models, prismatic building models can also be generated by using a semi-automatic procedure. An existing digital topographic map of buildings can be directly used to reconstruct their 3-D models without any excess stereo-measurements. In addition to cost reduction, high efficiency, high quality, and minimization of manual operations, the integration of photogrammetric mapping with 3-D building modeling in one procedure is possible, which is the most cost-effective approach for 3-D mapping.

Inventors: Chen; Liang-Chien (Tao-Yuan, TW), Rau; Jiann-Yeou (Tao-Yuan, TW)

Assignee: National Central University

International Classification: G06K 9/00 (20060101); G06K 9/36 (20060101)

Expiration Date: 2019-11-07 0:00:00