MAP-AIDED STRUCTURAL-ANALYSIS OF AERIAL IMAGES

A syntax-oriented method for a map-aided analysis of structures in aer ial images is proposed. First the map must be analysed in order to obt ain a suitable representation of its knowledge content. A special kind of graph, a so-called image-description graph, is the result of this map analysis. The knowledge of the map, represented on different descr iption levels, is used to control the search process during the image analysis. Based on this knowledge, expectations for attribute values o f image objects are defined. Generated objects are assessed relative t o the expectations of the map and the object model. A set-oriented sel ection method is applied to deduce the processing priority using these two assessments. Expected objects are preferably processed for buildi ng up more complex objects. Thus the map-aided analysis can be used to reduce the processing time for a verification task.