Bettina Petzold 
  
  
  
    
Bü point density L3 cost effectiveness 
Cihigh precision (3 high reliability 
C vegetation penetration t short production time 
Cothers 
Figure 3: Reasons for Usage of Laser Data 
5.2 Organisations Testing Laser Data 
If firms and administrations dominated the previous section, this part is dominated by universities. Otherwise the result 
is very much the same. The interest is turned more towards 3D city models, and the main reasons for using laser scanner 6 
data are point density, high precision and vegetation penetration (see Figure 4). 
The 
syste 
test : 
there 
The ı 
not p 
enou 
  
ll point density [1cost effectiveness it we 
£1 high precision high reliability addit 
E] vegetation penetration M short production time of 31 
others expe: 
Figure 4: Reasons for Testing Laser Data Field 
flight 
HE : avail 
5.3 Organisations not using Laser Data 
The many questionnaires sent back of those organisations that are not using laser data showed the high interest that 
existed already at that time in laser data. The reasons for not using laser scanner data are mainly lack of knowledge 
price and that the organisations have not reached so far yet (see Figure 5). Pricing seems to be a difficult issue, since 
this reason is used both in favour of and against the use of laser scanning. The most probable explanation is that tle 
price for small test areas is high. In addition all the advantages as they are given by the users can only be evaluated aft 
the first tests within the own agency, comparing the new production line to the old one that is very different, also 
compared to other agencies. 
More detailed graphics and results of phase! can be found at the Working Group's home pag 
http//www.eeomatics.kth.se/-fotogram/OEEPE« $i 
  
/oeene laser main.htm. 
£4 
  
  
722 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B3. Amsterdam 2000.