ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS", Bangkok, May 23-25, 2001 
15 
5S and points). 
identification of small 
ie classification was 
nd use, the red color 
s, settlements, roads 
are land is classified 
(some crops already 
lark green: 
CONCLUSIONS AND PERSPECTIVES 
The high resolution of the IKONOS2 images enables the 
production of land use data in a large scale. Even the 
classification of small areas of land use and small objects like 
irrigation sewers in the fields are possible. In China, this is 
particularly of importance due to the very small size of farm land 
(< 1 ha) in some areas. Because of the lack of data availability, 
additional DGPS field surveys are necessary for the 
georeferencing process of the image and for the evaluation of 
the land use classification. The latter is not done yet. The quality 
of the attributes of the derived land use map can even be 
enhanced by using a multitemporal classification approach. The 
spatial quality should be enhanced by using the “pan- 
sharpening” method of the multispectral files. The latter process 
will be the next step while the acquisition of more IKONOS2 
images is questionable due to new pricing of Spaceimaging 
which now have a minimum order of new images of U$ 6000,-.