3.1 Short description of Map Information System 
The Map Information System from SysScan consists of modules for data 
capture, storage, updating and retrivel. The data capture may be done 
by automatic or manual digitizing. By automatic digitizing, maps or 
drawings are scanned and then vectorized. The graphic data may be 
associated with tabular information stored in a data base. The data 
are stored in a hierarchial system that may represent different map 
layers that again are subdivided and so on. A map management system 
keeps track of the different files containing data. 
3.2 Short description of Remote Sensing System 
The Remote Sensing System is the System 600 from International Imaging 
Systems (TAS). System 600 consists of different bacic software 
modules and an application module for remote sensing. The system is a 
general purpose image processing system with added features for 
handling remote sensing data. To speed up execution the image 
processor Model 75 is used. 
4. DESCRIPTION OF INTEGRATION MODULES 
The data flow through the integration modules are shown in figure 1. 
The modules are described below. 
4.1 Extraction of data from Map Information System 
The extraction module is very flexible and allows extraction of data 
from one or more layers or sublayers (Module GINPLO). The user may 
specify how to represent the graphic primitives. The data are stored 
in an intermediate plot format (meta file) where the primitives are 
represented by vectors. 
4.2 Vector/raster convertion 
Vector/raster convertion is done by software (Module LSCPLOT). The 
user specifies the pixel size in units of user coordinates. As the 
information at this stage can be looked upon as binary data, the 
raster data are at first stored run length encoded. This data format 
is exactly the same as the format produced by the scanner. The final 
step is therefore to convert a run length encoded raster file to an 
image file in the image processing system (Module LSC2IIS). 
As input to the image processing system one therefore has either data 
directly from the scanner or from the structured vector data. If the 
data originally were stored in the structured vector file, all 
information about necessary transformation parameters between user 
cooordinates an pixel coordinates are stored in the header of the 
image file. If data input is directly from the scanner then the data 
are stored in the image file without information about user 
coordinates. 
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