AUTOMATIC CREATION OF 3D TEXTURED SIMPLIFIED MODEL FOR SUPPORTING PIER MAINTENANCE

Abstract

 For efficient and effective maintenance of aging piers, the camera-mounted radio controlled boat was developed. This enabled the acquisition of 3D dense polygonal model with rich texture of the undersurface of the upper part of the pier by SfM/MVS process to mulpiple images. In this paper, for the effective use of 3D model in various stages of maintainanc process, we propose the method for automatically converting it to the textured simplified model. To create the simplified model, our method first extracts planar surfaces accurately each of which represents the surface portions of the constituting parts, such as slab, beam, and pile top. It also creates high resolution ortho images of each planar region along its boundaries, which can be mapped to their corresponding regions of the simplified model. Cracks and flakings can be detected on the ortho images, and the images can be stored with the model altogether. We demonstrate the effectiveness of the proposed method through various experiments.