Generation of a 3D Scenery Map with Shadows at Arbitrary Time Using Aerial Photographs

Abstract

This paper shows that a method of generating a three-dimensional scenery map by removing shadows in an aerial photograph, and combining corresponding three-dimensional map, in order to realize a three-dimensional map that does not depend on the season and the time. First, the features of the sunny area and the shadow area are investigated. After that, the aerial photograph is classified into road area, roof area, and other, and the shadow extraction and the shadow correction processing are achieved for each area. Finally, an aerial photograph without shadows can be obtained by composing three areas, so that a three-dimensional map with shadows at arbitrary season and time can be generated.