Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [WA-3 DEMOGRAPHIC AND URBAN APPLICATIONS]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: PSEUDOCOLOR PHOTOMAPS PRODUCTION USING NEURAL NETWORKS. Karel Charvát, Vladimir Cervenka

Document type:: Multivolume work

Structure type:: Chapter

previous paragraphs) a selection of the image window correspondiog to superimposed part of a map sheet should be carried out. It is possible to do it empirically by comparing the map with the image hardcopy or with the image on the display screen. However T this method is not accurate too much and suitable for larger amount of data. It is better to select the image windows by means of image coordinates of the map sheet corners. They can be calculated by at t ine transformetiert front their - cartographic coordinates. Results of digital image processing have to be written on the film, »he film scanner/writer Photomation P 1700 Optronics is used for this purpose in our laboratory. the selection of the suitable print components is of special importance. It Is not good to overfill the photornap by the cartographic line content, but it is necessary to consider user s interest . Components for planimetry, geographic names or water are often used. The Carl Zeiss Jena precision rectifier Rectimat C was used for the color photomap production. Color photornap is a color composite superimposed with selected map print components. Three color components must be succesively introduced into the photo carrier of the rectifier and exposed with red, blue and green filters on the color film. A map content on the negative of cartographic fair draft is exposed with white light. Two cases of superimposing are possible a) exposure of reduced negatives placed in the photo carrier, b) exposure of negatives at original scale that are put straight on the photomaterial on the projection table of the rectifier. The second way is less elaborate and gives better legible cartographic line drawing on the photornap. C onclusion The method described has been successfully aopiied at Remote Sensing Centre of Geodetic and Cartographic Enterprise in Prague. Several photomaps sheet from North Bohemia and neighbourhood of Prague have been produced in this way. References [ 1 j Charvdt, K., Cervenka, V., Hylmar, F.: Production of 1 50 000 Pseudocolor Photomaps from Thematic Mapper data. Symposium ICA, Budapest, 1989.

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