The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
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It needs to composite the original land-use vector diagram and 
the processed remote sensing image for the updating of the 
land-use map with the 3S technology. We can find the changes 
of land -use base on the composite and integrate diagram. 
Then it is able to obtain the data of the changed objects or plots 
and frame updated layer with GPS or draw directly on the 
screen. Figure.3 shows the process of composite diagram of 
graph and image. First, we use the land-use line map and the 
processed remote sensing image data to pile up the graph and 
image data and form into image map which the MAPGIS 
supported. Next, we should write headlines, scales, footnotes 
and do some other grooms in the Photoshop in order to get the 
fusion map (Figure. 4), which can be used as the base map for 
the land-use updating. 
Figure 1. Figure 2. 1:10 000 scan relief map 
2.4 Conceptions 
On the image and graph fusion map, the boundaries of the plots 
in the land-use line map are the boundaries of the plots in the 
composite map. Among the composite plots, the homonymy 
composite plots are the plots which have the same line and 
image attributes, otherwise, they are defined as heteronym 
composite plots, which is the object of the land-use map 
updating. 
3. THE UPDATING WAY OF LAND-USE MAP 
The technology project of the land-use is as following: we can 
use the heteronym composite plots using the above mentioned 
fusion map to find out the changes of the land shapes and the 
lands that have incongruence attributes by using the auto- 
recognize technology of the heteronym plots. If the changes of 
RS image in the composite plots could reflect the alterations of 
the boundaries and land, we could directly draw the land- 
useupdate layer according the characteristics of the image. 
Otherwise, in order to draw the update layer, we have to use 
GPS to do some field survey to find out the updates of the land 
boundaries and the catch of the types, and then handle the data 
inside. 
Figure 3. Frame of fusion 
Figure 4. Fusion map of picture and image 
3.1 The Auto-recognize of the Heteronym Composite Plots 
The traditional way (Weihong Cui) for recognizing heteronym 
plots is operating on the composite map to find the updated land 
types depending on Man-machine interactiive interpretation. 
But this kind of eyesight interpretation is not only strict with the 
workers, but also has a heavy workload and can easily proudt 
leaks. In order to improve the interpretation speed, nicety and 
the extent of automation, in which the 3S is used, we have