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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