Abstract
The image based modeling finds use in applications where it is necessary to reconstruct the 3D surface of the observed object with a high level of detail. Previous experiments show relatively high variability of the results depending on the camera type used, the processing software, or the process evaluation. The authors tested the method of SFM (Structure from Motion) to determine the stability of gabion walls. The results of photogrammetric measurements were compared to precise geodetic point measurements.
Highlights
Image based modeling is very actual technology in this days
The image based modeling finds use in applications where it is necessary to reconstruct the 3D surface of the observed object with a high level of detail
We proposed to expand the mentioned geodetic point measurement with the unselective area measurement using the technology of image based modeling
Summary
Image based modeling is very actual technology in this days. Thanks to the high degree of automation in computer vision and SFM ([1], [4], [6]), it is possible to achieve fast and quality results of the imaged objects. There is a great variety of applications for image based modeling using the SFM technology ([2]). It is possible to produce quality models of objects of different dimensions, from few milimeters to tens and hundreds of meters, mostly in fields like archeology, cultural heritage, geology, mining and aerial mapping. The most important is the irregular random texture of the object's surface. This requirement is very easy to fulfill in the case of natural stone surfaces like a gabion wall is. The resulted accuracy of generated 3D surface is around 0.5 - 2 pixels ([5]), depending on the type of the surface (higher accuracy on flat surfaces, lower in the presence of sharp details)
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