International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004 
  
programmed from scratch, which is beyond the current 
capabilities of the research group. 
7. CONCLUSIONS AND FUTURE DIRECTIONS 
It is clear that there are a number of areas ripe for research in 
this field, beginning with the definition of uncertainty as it 
relates to visualised landscapes, moving through the technical 
feasibility of the various options for representing it (which will 
need to be revisited as technology develops), to the perceptions 
and understanding of various groups of end-users when faced 
with such visualisations. The first of these is vital if subsequent 
work is to be carried out within a valid context, and to a large 
extent will influence the sorts of images produced for 
investigation. 
It would seem sensible to begin with easily-modified still 
visualisations in order to keep processing time to a minimum as 
viewers’ perceptions are explored. By employing qualitative as 
well as quantitative research methods, further insight and ideas 
could be obtained from respondents; ideally such results would 
be used to inform and direct research into more complex 
animated or interactive methods. To these ends, the next steps 
of this project will be to carry out preliminary surveys of non- 
expert respondents to elicit their responses to these and other 
simple expressions of uncertainty in visualised landscapes. 
The eventual aim of this research is to feed back into the 
visualisation process as it is used in real-life applications. In 
helping visualisation producers to illustrate uncertainty in the 
clearest and most accessible way, this work has the potential to 
improve the communication of landscape-related information 
and thereby enhance the environmental decision-making 
process. 
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