Raster Data Management/Image Server
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Raster Data Management/Image Server
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9.2 Additions/Changes to Raster Data Management
• It is now possible to do orthorectification in ArcMap, image/raster must have RPC (rational polynomial coefficients) and you need a DEM
• You can now generate a hillshade on the fly, without the need for the spatial analyst extension (check box in symbology tab)
• Creation of Terrain dataset, used to store massive amounts of surface data.– TIN based– Must be stored in a Geodatabase dataset (personal, file,
SDE)– 3D analyst is used to create a Terrain
• You can generate a DEM from a Terrain and use it to perform different raster analysis functions
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Quick Facts on ArcGIS Image Server
• Provides fast access to imagery– Sensor to server– Server to screen
• Can read variety of different types• Reduces storage, by cutting down on redundancy
– Imagery can be resampled on the fly, with Image Server there is no need to store grayscale and color imagery, or varrying levels of compression.
• Compression for storage is independent from compression for transmission, client can control compression level to balance performance with image quality
• Orthorectification, enhancement, and mosaicking can be performed with Image Server on the fly– Could mean quicker delivery of imagery to data partners– Seamlessly integrate rectified imagery with service once it is
available
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Viewpoints, potential Oblique Imagery layers
with Image Server• Image Server
handles overlapping images with what they call viewpoints. – Viewpoints allow
different views of the same location when overlapping imagery is present.
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