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EXTENDED HYBRID REGION GROWING SEGMENTATION OF POINT CLOUDS WITH DIFFERENT RESOLUTION FROM DENSE AERIAL IMAGE MATCHING

authored by
Mohammad Omidalizarandi, Mohammad Saadatseresht
Abstract

In the recent years, 3D city reconstruction is one of the active researches in the field of photogrammetry. The goal of this work is to improve and extend region growing based segmentation in the X-Y-Z image in the form of 3D structured data with combination of spectral information of RGB and grayscale image to extract building roofs, streets and vegetation. In order to process 3D point clouds, hybrid segmentation is carried out in both object space and image space. Our experiments on two case studies verify that updating plane parameters and
robust least squares plane fitting improves the results of building extraction especially in case of low accurate point clouds. In addition, region growing in image space has been derived to the fact that grayscale image is more flexible than RGB image and results in more realistic building roofs.

Organisation(s)
Geodetic Institute
External Organisation(s)
University of Tehran
Type
Paper
Pages
125-134
No. of pages
10
Publication date
2013
Publication status
Published
Peer reviewed
Yes
Electronic version(s)
https://doi.org/10.5121/csit.2013.3513 (Access: Open)
 

Details in the research portal "Research@Leibniz University"