Abstract
Image maps have become very popular and frequently produced cartographical outputs during recent years. However, the unambiguous terminology, definitions, content and appearance specification have not been widely researched. The paper deals with the new definition of image map, its components delineation, and basic classification. The authors understand the image map as a special map portraying geographic space in a particular cartographical projection and map scale, where its content consists of two basic components – image and symbol components. Image component is represented by remote sensing image(s), while symbol component is represented by cartographical symbols. An image map has to have three essential attributes: cartographical projection, map scale and symbol component by means of map language. The authors also present aspects of topographic and thematic image maps.
Highlights
Images captured by means of remote sensing are a very important source of geospatial information
The authors have focused their research on situations when remote sensing images are used in cartography, not on information derived from the images, such as classified thematic rasters
Image component is represented by remote sensing image(s), while symbol component is represented by cartographical symbols
Summary
Images captured by means of remote sensing are a very important source of geospatial information. Aspects of orthophotomap creation briefly touched Petrie (1977) He outlined some design issues which the paper authors have had to deal with as well. He mentioned importance of cartographic enhancement (symbol component) represented mainly by contours. Many authors present individual approaches for the creation of various thematic maps, as published in Vozenílek 2005, Kraak 1996, Slocum et al 2005, Robinson et al 1995, Pravda, Kusendová 2007 They have not dealt with the relationship between symbols and orthophotographs, especially orthoimages used as a topographic base. The general concept has been verified through the authors’ image map examples
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