3D Shape Extraction Using
Photographic Tomography with Its Applications
Mr.Sutath Reruang
King Mongkut's
Department of Electronics
Engineering
3 Moo
2,
e-mail: s5060209@kmitl.ac.th; rsutath@yahoo.com http://www.kmitl.ac.th/biolab
Abstract
Tomographic imaging is a technique for exploration of a
cross-section of an inspected object without destruction. Normally, the input
data, known as the projections, are gathered by repeatedly radiating coherent
waveform through the object in a number of viewpoints, and receiving by an
array of corresponding detector in the opposite position. In this research, as
a replacement of radiographs, the series of photographs taken around the opaque
object under the ambient light is completely served as the projections. From
the process of tomography, the outcome is the stack of pseudo cross-sectional
image. Not the internal of cross section is authentic, but the edge or contour
is valid. Several applications can implicitly take advantages from the stack of
contour, for instance, 3D true-colored modelling and
geometric measurements. Nevertheless, the process has a problem to extract the
highly concave-shape object due to the blind of camera by the occluded patches.