Image-Based 3D Scanning: A Study on Surface Topography and Geometric Accuracy

Abstract

Image-based three dimensional (3D) scanning is a photogrammetry method. Photogrammetry is a scientific discipline used for obtaining dimensional information from photographs taken of objects. This discipline used in the mapping of geographical areas with photographs taken from airplanes at first, began to be used in obtaining the 3D model of objects with the development of the technology. Image-based 3D scanning method which is becoming increasingly widespread in the field of photogrammetry has become important like laser and optical scanning methods in areas of reverse engineering, personalized design, forensics, biomedical, industrial design, virtual reality. This method has some advantages such as low cost, color modeling compared to other 3D scanning methods, and yet is questioned in some aspects such as dimensional accuracy and surface integrity. In this study, as a result of the scanning operations on small size (125-1000 cm3) objects, the digitized models and the actual objects were compared dimensionally. In addition, glossy, transparent and matte surface objects were modeled by image-based 3D scanning method and the differences related to the process were revealed and the precautions to be taken were stated. This article is thought to be useful for researchers who want to use image-based 3D scanning in their study.

Keywords

• 3D scan,Photogrammetry,Photo scan,Image based,Recap

References

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