Image-based 3D Scanning: System Setup and Operations for Two Different Model Approaches

Yıl 2018, Sayı: 4, 103 - 107, 04.12.2018

Hasan Kemal Surmen Hasan Yaman

Öz

3D
models are required for design studies carried on in many sectors such as
automotive, machinery, aeronautics and industrial design. 3D models frequently
used in Computer Aided Engineering (CAE) applications are obtained by drawing
with a Computer Aided Design (CAD) software. Moreover, when it is desired to
improve the design of an existing part or to make its computerized analyzes, it
is necessary to transferred to the electronic environment. Today, 3D scanning
methods are used especially in reverse engineering applications,
patient-specific designs, cases that parts need to be redrawn and obtaining
free-form models. The use of different 3D scanning methods, such as laser
scanning and optical scanning, is increasing in scientific studies and
industrial applications. In addition to these methods, the image-based 3D
scanning method known as a low-cost photogrammetry method has started to be
used in many different areas such as engineering, biomedical, forensic medicine
and archeology. It is possible to carry out the digitization process with this
method which basically needs a photographic machine and a computer software
which allows the creation of the 3D model from the obtained images. During this
process, some problems arise from the operator and external factors, and as a
result, the scanned models cannot be digitized as desired. In this study,
image-based 3D scanning process is explained in detail and two different
approaches which can work manually and reduce errors caused by operator and
external factors that may occur in the scanning process are discussed. In
addition, image-based 3D scanning applications for both systems were carried
out and merits and shortcomings of these systems were evaluated and compared
the methods used in these systems with other scanning methods.

Anahtar Kelimeler

3D scanning, Photogrammetry, 3D Photo scan, Image based 3D scanning, Digitization

Kaynakça

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