B5. Istanbul 2004
r block geometry
impression of the
inates attached to
images had to be
not be recognized
the targets were
adjustment was
10t used, because
tortion free. The
orrect coordinate
the comparison
shown in Figures
accuracy in depth
curacy. It can be
leformations. The
limetres from the
n on the top left
f the deformation
in was 10.9 mm.
7
*
ct coordinates are
rmation vector in
units in the graph
is better than the
6. CONCLUSIONS
Because the lens distortions may be tens or hundreds of pixels
on the edges of the images, camera calibration is essential in the
creation of seamless panoramic image mosaics, especially if
they are meant for measurement purposes. Deviations, like 1
mm, in the concentricity cause visible deformations to the
image if the imaged object is close to the camera and not planar.
Visually the camera can be adjusted to a correct place with the
accuracy of some tenths of a millimetre. Also, the stitching
order is important. The images should be combined
symmetrically and according to the size of the overlap area to
force the mosaic structure strong.
7. ACKNOWLEDGEMENTS
This study is part of the Spherical Imaging project funded by
the Academy of Finland.
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