yor 
for the technique 
truction using one 
onstrates that one 
10-40% of the log 
cle approximation 
. Fig. 11b shows 
  
bed technique for 
nt measurements. 
vas at the level of 
techniques are 
g industry. Two 
nts are proposed 
on. The precision 
mation technique 
measurements is 
measurements is 
cribed laboratory 
quite enough for 
irements can be 
applied in off-line 
urther processing 
e current stage of 
more reliable and 
extraction. The 
at the level of 0.1 
BS. Istanbul 2004 
  
  
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
  
mm for laboratory system. Including additional processing 
based on stereo information will allow increasing reliability and 
precision of automated mode. 
The method for volume estimation of log moving on the 
conveyor demonstrates reasonable precision even in case of 
using one camera for surface extrapolation. The precision can 
be improved by using two cameras system. 
The results of laboratory system application for log models 
demonstrate that the developed techniques provide high 
accuracy of measurements and reasonable performance. The 
higher characteristics can be reached by using more powerful 
processor and applying sensors of higher resolution. The 
developed digital close-range photogrammetric system has 
built-in capabilities for full automation and real-time 
processing. 
6. REFERENCES 
Knyaz, V.A., Sibiryakov, A. V., 1998. The Development of 
New Coded Targets for Automated point Identification and 
Non-contact 3D Surface Measurements, International Archives 
of Photogrammetry and Remote Sensing, Vol. XXXII, part 5, 
Hakodate, Japan, 1998, pp. 80-85. 
KNYAZ V.A., VIZILTER YU.V., 2000. Method for 3D non- 
contact measurements of cut trees package area. Proceeding of 
SPIE, Vol. 4189, 2000, pp 276-285. 
KNYAZ V.A. 2002. Method for on-line calibration for 
automobile obstacle detection system, International Archives of 
Photogrammetry and Remote Sensing, Proceedings of ISPRS 
Commission V Symposium “CLOSE-RANGE IMAGING, 
LONG-RANGE VISION”, Vol. XXXIV, part 5, Commission 
V, September 2-6, Corfu, Greece. Pp. 48-53