image may be intepreted as tree land or grass land in
terms of the features extracted from image (see Figure
7 )and some rules. When the land use map is used,
we may find that the indeterminate region is surround
by region G, of digital land use map, so it may
further be interpreted as a swamp meadow by using
the knowledge; vegetation in a swamp is swamp
meadow.
segmentation image
R,—tree/grass land
Rı
Cs
Gy
G;
Digital land use map
a
Gi C; ien
Synthetic land unit map
G;—swamp
Figure 7. An example of image interpretation
4. EXAMPLES AND CONCLUSIONS
Following the thought of this paper , we have
of
automatically converting and interpreting remotely
developed a set computer for
programs
sensed imagery. These programs have been used in
real projects including the vegetation classification of
shuang Yang county in Jilin province of China using
TM image,satisfactory results have been obtained.
The TM image used in the experiment is a 512X512
pixel image of an agricutural scene . Figure 8 is a
segmentation image obtained by a maximum likelihood
classifier based on ARIES image processing system
. Because the classification is only based on spactral
and statistical information of each pixel ,and ignore
the the
corresponding between is
adjacent pixes,
and objects
imterrelation between
segments
indeterminate. For example, in Figure 8 the willow
882
land may be mixed with poplar land.
Figure 9 is a synthetic land unit map composed of the
segmentation image and digital land use map that is
acquired by non — remotely sensed way . We may
obtain some relations which are difficulty found in
remotely sensed image.In Figure 9, rivers, roads,
resident lands etc * are provided from the land use
map. The relation may be used‘ for image
interpretation.
Figure 10 is the region labeling in the complexes. It
shows the enclosed region with the aim of forming
correlation list, region relation list and attribute
of the
correlation list,land unit relatability list etc »
list. By making use complex labeling,
a class
interpretation image is made. Based on the spatial
parsing of the class interpretation image,the relation
between willow land and irrigation land is used for the
interpretation of willow land . As a result,the mixture
of willow lands with popJar lands is reduced at least
about 2594.
5. ACKNOWLEDGEMENT
This paper was sponsored by the National natural
. This is
Science Foundation of China support
gratefully acknowledged.
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