3. CONSTRUCTION OF DISASTER PREVENTION MAP 
In this study, disaster prevention map was produced through the 
pre-constructed digital terrain map, digital image and disaster 
attribution information to understand disaster situation and 
damage scale promptly and comprehensively. 
By achieving digital aerial photograph(25cm ground resolution) 
of the study object area, ortho-images were produced and 
mosaic and split processing were performed after color 
correction and editing. After completing structured edition for 
photos, symbol works for object facilities and attribution 
information related with disaster were input. Related 
information was made into files after performing 
supplementation and visual inspection. Each separate disaster 
prevention map was made to correspond to the 1:5,000 scale 
digital map and this corresponds to disaster information map 
using the existing digital terrain map. Fig. 2 shows the 
production flow of disaster prevention map. 
0 Digital mage 
i 
; pure ee ni pe 
: p Fusion 
  
  
  
| 
© Construction of Base Map 
i 
© Structured Editing 
  
  
  
  
—— Qu Her Mri Information 
  
  
  
- E Supplement of Attribute Information 
  
  
  
  
$ 
8 Print 
i 
© Inspection 
i 
  
© Disaster Prevention Map 
Figure 2. Flow chart 
  
3.1 Classification of Hazard Information 
To construct disaster prevention map, basic information such as 
basic map, flooding information, evacuation information, etc. 
should be investigated and collected. Digital terrain map was 
used as a basic map for constructing map and other information 
such as roads, public facilities, etc. were used. As for flood 
information, flood trace information and flood estimation 
information were used and for evacuation information areas for 
evacuation, evacuation population and shelter and evacuation 
facility information were used. 
3.2 Digital Map and Digital Image 
The digital terrain map of 1:5,000 scale by National Geographic 
Information Institute was used to produce disaster prevention 
map and digital images achieved by a large scale frame camera, 
UltraCamD were used. Data for disaster prevention map was 
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B7, 2012 
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia 
    
secured by masking into administrative districts using image 
processing software of mosaic images in the study object site. 
Fig. 3 is the digital terrain map of the study object site and Fig. 
4 shows the digital images. 
  
Figure 3. Digital map 
  
Figure 4. Digital imagery