This thesis involves the development of a three-dimensional measurement system
for digitising the surface of an object. The measurement system consists of a single
camera and a four point planar target of known size. The target is hand held, and is
used to probe the surface of the object being measured. The position of the target is
tracked by the camera, and the contact point on the object is determined. The vision
based digitising technique can be used in the industrial and engineering design fields
during the product development phase.
The accuracy of measurement is an important criterion for establishing the success
of the 3-D measurement system, and the factors influencing the accuracy are
investigated. These factors include the image processing algorithm, the intrinsic
parameters of the camera, the algorithm to determine the position, and various
procedural variables. A new iterative algorithm is developed to calculate position.
This algorithm is evaluated, and its performance is compared to that of an analytic
algorithm. Simple calibration procedures are developed to determine the intrinsic
parameters, and mathematical models are constructed to justify these procedures.
The performance of the 3-D measurement system is established and compared to
that of existing digitising systems.
| Identifer | oai:union.ndltd.org:ADTP/216579 |
| Date | January 1997 |
| Creators | Iovenitti, Pio Gioacchino, piovenitti@swin.edu.au |
| Publisher | Swinburne University of Technology. |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
| Rights | http://www.swin.edu.au/), Copyright Pio Gioacchino Iovenitti |
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