on the image is + 
^is may be because, 
r due to halation. 
not uniform. 
is admitted even if 
ed with 1/100 scale 
system with wireless 
satisfactory for the 
emi real-time stereo 
results are shown in 
jer point for stereo 
which consist of 180 
  
  
'V Monitor 
ey A 
| site 
enna 1996 
Table 6 Calibration results for stereo image of archaeological site 
  
Xo Yo Zo w Ó 
K X yo f 81 a2 p1X107 
  
  
mm mm mm 
left image |-1192.14 1574.47 9233.15 4° 33’ 151” 3° 08’ 19.6” 
rightimage | 3517.22 940.60 8711.11 0 42 231 -1 59 - 9.1 
  
pixel pixel mm 
-2° 59’ 30.9” 256.009 256.013 4.055 131.413 -2.747 4.00 
058 272 256.005 255.981 .4.078 132.447 1.774 8.00 
  
  
  
   
  
  
  
  
  
T C Hod : ia 
ool 
x LF 
im 
is ) 
re 
om im 
  
Figure 11 Site recording (scale 1/100) 
87 
6. CONCLUSION AND FURTHER WORK 
In this paper, two issues on a real-time photogrammetric 
system for site recording were discussed. One is a 
camera calibration method to simplify geodetic surveying 
for control and the other is real-time image acquisition 
from tethered balloons or kites. 
The camera calibration method without any geodetic 
surveying for control has been established by utilizing 
information such as distance and height which are 
included in the image. In order to develop this camera 
calibration, 4 types (Parallel, Box, Cross and F type) have 
been investigated. It has been shown that the cross type 
which improved the parallel type has the advantage of 
setting the control points and accuracy aspects. 
With regard to the second issue, itis concluded that the 
wireless CCD camerais a useful tool for the purpose of 
real-time image acquisition from tethered balloons or 
kites. 
The real-time photogrammetric system for site recording 
has been demonstrated. There are , however, some 
issues which need to be resolved before real-time 
photogrammetry may become operational. These 
problems include, how to take aerial images, automated 
stereo matching and accuracy. It is assumed that the 
method of taking aerial images is the most severe issue 
since balloons and kites take considerable time to 
prepare. 
REFERENCE 
H. CHIKATSU, N.KASUGAYA, S.MURAI, 1988. An 
Adjustment of Photogrammetry Combined with the 
Geodetic Data and GPS. 16th ISPRS,vo0l.26 , Part 3 
H. CHIKATSU, N.KASUGAYA, S.MURAI,1989. A Study 
on Photogrammetric Method Combined with Constraint 
Condition of the Distance.Journal of the Japan Society of 
Photogrammetry and Remote Sensing,Vol.28, No.5 
H. SCHAEFER, S.MURAI, 1988. Automated Target 
Detection for Real-Time Camera Calibration.Proc.of.9th 
Asian Conf.on Remote Sensing,November 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996