The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B5. Beijing 2008 
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3.3 Integration of satellite orthographic image, digital 
elevation model and 3D model 
The high resolution satellite image, digital elevation model, 
various fabricated ground object model and road, lawn, space, 
water body and other 2D vector lines and planes collected from 
high resolution satellite images corrected by orthograph are 
integrated and matched to corresponding texture models to 
generate 3D virtual blocks (Fig. 2). 
3.4 Establishment of attribute database and connection with 
3D simulation system 
Sorting and encoding are performed for various 3D model and 
ground object types of blocks to fabricate respective 
corresponding attribute database. According to coding, we 
realizes the connection of attribute data and model of 3D block 
to enable user to realize the attribute query for various ground 
objects in 3D virtual simulation system, and combined with 
concrete industry application, we realized renewal, analyses and 
other functions to enable the fabricated 3D block model to serve 
for every walk of life of national production. 
Large scale 
topographic 
map scanning 
Urban 
traffic map 
Vectorization - 
li 
Con 
numera 
and eva 
tour 
ization 
luation 
generation 
I 
High resolution satellite 
remote sensing data 
acquisition 
Mark 
information 
acquisition 
Cutting of selected 
DEM data 
Information 
acquisition 
of building, 
road, 
municipal 
facilities and 
other ground 
objects 
I 
geometric correction 
with DEM and RPC 
Fabrication of 
3D model 
fusion of panchromatic 
and multispectral band 
i 
Image mosaic 
Cutting of selected 
image data 
Integration and 3D display of DEM, 
satellite image, ground object model, 
vector data and mark data layer 
VB6.0+VRMap3.0 
Data collection 
and on site 
survey 
System interface, functional 
module development, 
database connection 
I 
Various 
ground object 
attributes 
I 
Browse, query, aided design, route 
flight in 3D city, simulation planning 
and design system 
Figure 1 technical line diagram