1 operation and the
[cx ishour t for id
a single position
from each other);
from 5 successive
urs (28000 points
In near future with
nd speeding-up of
ill become possible
to take only 15
T DATA
PLICABILITY
"EM
| of analyzed result
F file is a standard
ut into almost any
ble the mutual data
er CAD systems. So,
pplied to contrast
esign data.
view of 3D data of
view was produced
ging the 28000 3D
1to wire-frame, 2)
ta into AutoCAD
hird by applying to
utoCAD and 4)
angles. The Fig.12
ust port and light
e slight wrinkles of
are visible in an
(LI
LE te
ew (AutoCAD)
Point Total
number time
in DTM
28188 Thours
6561 lhour
nina 1996
Again the Fig. 13 is a contour-lined picture
produced by processing through the data of the
table 1.D into CivilCAD, a TOPCON surveying
CAD.
The images which have gone through these
processes and the images which have been
processed through PI-1000 are possible to be
output in the TIFF format, which is an
image-format of wide applications. So, they can
be input into the image editing software sold on
the market and easily managed and edited. The
examples of image outputting of our presentation
this time were all processed through these tools.
The PI-1000 has a build-in device of 3D viewing
by 3D display and can superimpose and display
stereo images and measured 3D data. With this
device we are able to check the correctness of 3D
data, as well as to grasp visually the unevenness
of surface without our being actually present at
the spot.
The Fig.14 is an example of the superimposition
of the stereo contour line image obtained by
processing through PI-1000 onto the stereo image.
Furthermore, by superimposing the measurement
data onto the design data of CAD upon the 3D
image display, we can make a contrast
composition in 3 dimensions.
Though this time we did not do similar operation
with Shinkansen experiment, we should like to do
it at the first opportunity.
6. CONCLUSION
In this paper we have explained the general
outline of our system, the experiments on the
simulated surfaces, test results of measuring a
real train body, and the examples of inputting
measurement data into the CAD system. As to the
test and experiments, we could obtain satisfactory
results with regard to the targeted accuracy. Here
we could also demonstrate the inputting process of
such data into CAD systems as well as the
different applicabilities of PI-1000, our stereo
image workstation.
Our system enables quantitatively in short time a
complex work from operation,
camera
Fig.13 Contour lines (CivilCAD)
measurement of surface features and their final
assessment, as well as a visual confirmation of the
measurement results and the objects themselves.
Furthermore, if we link it with CAD systems, a
whole variety of application will become possible,
such as comparison of the measurement data with
design data, management of data etc.
In future, we are planning to further widen the
applicable fields of this system, to increase its
accuracy and to simplify the measurement system
itself, as well as its application to CAD.
Finally, we should like to express our sincere
gratitude to all the kindness and helps extended to
us in our research works by East Japan Railway
Co.Ltd.
REFERENCES:
Kochi, N., Ohtani, H., Nakamura,S., Utiyama,T., Chida,M.,
Sato,H., Noma,T., 1995 ISPRS Intercommission Workshop
"Development of a Metric CCD Camera and Its
Application", pp.254-258.
Ohtani, H., Ishii, M., 1992 ISPRS Washington. "Application for
Close-range Photogrammetry Using a Camera System Attached
on Transit and Stereo Image System(TOPCON
PS-1000/PI-1000)", Commission No.5, pp. 30-34.
Hattori, S., Seki, A, 1992 ISPRS Washington. "Bundle
Adjustment in No Need of Approximations of Parameters",
Commission No.3, pp. 200-206.
Okamoto, A., 1988 ISPRS Kyoto. "General Free Net Theory in
Photogrammetry", Commission No.3, pp. 599-608.
Fig.14 Stereo contour lines upon the nose of bullet train(left and right image)
81
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996
