Automatic Raster to vector Conversion
Posted on 2003-03-10
I want to develop a software for automatic raster to vector conversion. The available softwares work well with traced maps. What I want is to develop a software that takes as input a raster image, and produces an output of a vector image with minimum loss of data. U? can even use a knowledge base for the purpose.
The approach I thought of is to first detect the edges, then go for segmentation if required and then go for pattern recognition. The output is essentially is a set of lines, pilylines and polygons. I can use the knowledge base in this way:
First it checks if the image is geo-referenced. If so, then it checks in the knowledge base if data about the same latitude/longitude is present in the database. If data about that location is present in the database then the algorithm sees if there is a change in the location, and the system should be intelligent enough to check if the change is a noise or is there really a change in the location on earth. Can anyone suggest me in what other ways the knowledge base can be used and what should be stored in the knowledge base ??
Let me mention that the images I am talking of are aerial or satellite images.
Also, give me suggestions as to how to approach the problem ??
Thanking u in advance