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Raster Data Management/Image Server 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 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 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.