RECOGNITION OF ROAD AND RIVER PATTERNS BY RELATIONAL MATCHING
Norbert Haala · 2010
This paper discusses a procedure aiming at the automatic exterior orientation of images. To this purpose the relational matching method is used to match relational descriptions of images and maps. Because roads, rivers and land parcels often constitute unique structures, these topographic features are taken as the basic elements of the descriptions and are used to identify and locate landmarks like road crossings, waterway junctions and specific parcel structures. The structural descriptions of the images are obtained by thresholding selected channels of colour images and subsequent thinning of the linear structures. Tree search methods are used to match the derived relational image descriptions with hand made descriptions of the landmarks.