منابع مشابه
Generating Logic Descriptions for the Automated Interpretation of Topographic Maps
Automating the interpretation of a map in order to locate some geographical objects and their relations is a challenging task, which goes beyond the transformation of map images into a vectorized representation and the recognition of symbols. In this work, we present an approach to the automated interpretation of vectorized topographic maps. It is based on the generation of logic descriptions o...
متن کاملTopographic Maps
We call "natural" image any photograph of an outdoor or indoor scene taken by a standard camera. We discuss the physical generation process of natural images as a combination of occlusions, transparencies and contrast changes. This description ts to the phenomeno-logical description of Gaetano Kanizsa according to which visual perception tends to remain stable with respect to these basic operat...
متن کاملTopographic Interpretation of Posterior Keratoconus
.................................. We present a case of a sixty years old Asian male who presented to us with gradual decrease in vision of both eyes. Slit lamp examination revealed paracentral thinning with a dome-shaped excavation in the posterior corneal surface in each eye. Other than the early lens changes, rest of the ocular examination was normal. A diagnosis of bilateral Posterior Kerat...
متن کاملRelational Topographic Maps
We introduce relational variants of neural topographic maps including the selforganizing map and neural gas, which allow clustering and visualization of data given in terms of a pairwise similarity or dissimilarity matrix. It is assumed that this matrix originates from an euclidean distance or dot product, respectively, however, the underlying embedding of points is unknown. One can equivalentl...
متن کاملTopographic Maps of Color Images
We address the problem of extending topographic maps to color images. A topographic map gives a morphological and a geometrical representation of the information contained in natural images. Two approaches are presented and discussed. The first one is new and consists in defining a total order in IR3 in accordance with the human visual perception of shapes. This allows to define color topograph...
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ژورنال
عنوان ژورنال: Bulletin of the American Geographical Society
سال: 1909
ISSN: 0190-5929
DOI: 10.2307/200717