N 
= Uu 
Hongo, Kenji 
  
2.4 System configuration 
2.4.1 Hardware configuration of the system 
Minimum hardware compositions of the system are a note-type PC, a PC-controllable digital still camera with more 
than mega pixels, lighting equipment and a scale such as a staff in leveling. Standard hardware compositions of the 
system are a desktop PC, another digital still camera, another scale, a color printer, and removal storage device such as 
magneto optical disk drive in addition to the above minimum compositions. This hardware configuration is satisfied 
with the user request of small-scale and low-cost hardware. Figure 2 shows standard hardware configuration. The left 
part of Figure 2 shows hardware for image acquisition at a heritage site and the right part shows hardware for image 
processing and analysis in an office. 
All hardware components of the system are for all purposes and available on the market. The most expensive 
component of the system is a PC-controllable digital still camera. In the autumn of 1998 we got a digital still camera 
with 1,280 pixels by 1,000 lines and a 28 mm lens at approximately 8,000 US$, but we can now obtain a digital still 
camera with 3,040 pixels by 2,016 lines and the same lens at the same cost. 
  
  
  
  
Desktop PC 
  
  
     
  
  
  
  
PC-controllable 
_ digital still cameras 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Removal 
storage device 
Scales 
  
  
Note-type PC 
|. o ín» am emm em xm um em en UU I n office_ - l 
Figure 2. Standard hardware configuration 
2.4.2 Software configuration of the system 
As shown in Figure 3 the system consists of the following three subsystems: 
(1) Image acquisition subsystem 
(2) Ortho-image generation subsystem 
(3) Restoration information management subsystem. 
  
  
  
  
  
  
  
  
  
  
  
Image acquisition Ortho-image generation Restoration information 
subsystem subsystem management subsystem 
Makin : : : Mapping damaged area 
: B Orientation of images pping 8 
image acquisition plan and restored area 
: Input of 
isiti Creating ortho-images . 
Image acquisirion 8 8 restoration records 
Retrieval of information 
Connecting ortho-images about damage/restoration 
Figure 3. Software configuration 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 375