ters will be 
the proposed 
that by the 
st one of the 
icquiring data 
imulated test 
issue when 
| resources is 
sts. Although 
to solve this 
methods can 
e of change 
a new fence 
ore important 
urban public 
eported, rural 
ence is rarely 
avisions are 
ı the project 
national high 
| is coming to 
iproving the 
face. Three 
are: 
os in terrain 
owing major 
>.) and 
n where the 
s etc. 
a will aid the 
phy can be 
ing buildings 
ks either to 
edit tools to 
'e is growing 
se it in three 
fe to say that 
have been 
s at an early 
her than an 
1g scenario, 
nts. 
a supporting 
'om which to 
S stage 2.5D 
to provide an 
> realistically 
e is relatively 
2. Currently 
all survey OS 
techniques to capture 3D coordinates universally and 
therefore more pragmatic maintenance techniques are 
being sought. 
Land Use The final aspect of the project will examine 
the potential of the new forms of imagery in populating 
and maintaining a land use inventory. Clearly there is 
little scope to accurately determine land use in urban 
areas from remote images but a high success rate in rural 
areas is expected. Again the investigators will benefit 
from a priori knowledge in the form of land parcel 
polygons. 
4. CONCLUSIONS 
If successful national economies rely on sound decision 
making then robust and timely information is essential to 
that process. Where much of the national infrastructure 
planning and development has a geospatial basis and to 
support this there is a need for comprehensive, high 
quality data. 
Much of these data will be captured by different 
organisations. OS, in its role of providing the national 
topographic framework that underlies most other data, 
needs to provide data that are timely, accurate and 
affordable. High spatial resolution imagery whether from 
satellites or aerial platforms will contribute to this. 
Computing power, networks, sensors and the 
technological infrastructure supported by wide 
collaborative research is already having a significant 
impact in realising the longer term aim of maximising 
automation in the data collection process. 
In parallel with the developments in technology, 
standardisation, commercial and legal developments will 
ensure that the National Geospatial Database becomes 
reality and there will be a virtual model of Great Britain. 
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International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B6. Vienna 1996