GeoTiff中GeoTag域解析

刘修国; 花卫华

Volume 27 Issue 3

May 2002

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LIU Xiu-guo, HUA Wei-hua, 2002. Analysis of GeoTag Fields in GeoTiff. Earth Science, 27(3): 246-249.

Citation:

LIU Xiu-guo, HUA Wei-hua, 2002. Analysis of GeoTag Fields in GeoTiff. Earth Science, 27(3): 246-249.

LIU Xiu-guo, HUA Wei-hua, 2002. Analysis of GeoTag Fields in GeoTiff. Earth Science, 27(3): 246-249.

Citation:

LIU Xiu-guo, HUA Wei-hua, 2002. Analysis of GeoTag Fields in GeoTiff. Earth Science, 27(3): 246-249.

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Analysis of GeoTag Fields in GeoTiff

LIU Xiu-guo^1
,,
HUA Wei-hua²

1.
Faculty of Information Engineering, China University of Geosciences, Wuhan 430074, China
2.
The Graduate School, China University of Geosciences, Wuhan 430074, China

Received Date: 2001-11-16
Publish Date: 2002-05-25

Abstract

Abstract

GeoTiff is a special formofTiff spec.GeoTiff 1.0 adds six GeoTags provided to describe all geographic coordinate information and projection informationon the base of Tiff.Using the tags, such as pixel scale, tie points, projection types, coordinate systems etc., you can easily getthe latitude and longitude fromthe rasterspace of GeoTiff image, and vice versa.Firstly, this thesis introduces three kindsof coordinate systems GeoTiff supporting and discusses the relationships of the six GeoTags; next it describes the meanings and the storing method of them.Then, the thesis gives the method and steps of the conversion between coordinates of raster space and model space according to the principle of GeoTiff image data encoding.Finally, considering the application of GeoTiff, the thesis discusses itsmerits and forecasts its development scope.
- GeoTiff,
- GeoKey,
- pixel scale,
- coordinate transfermatrix,
- tie points,
- raster space,
- model space

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References(7)

References

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