Editing raster dataset footprints

LegacyLegacy:

ArcGIS 10 is the last release of the stand-alone ArcGIS Image Server product. The image service definition (.ISDef) has been replaced by an improved geodatabase data model—the mosaic dataset—which can be published as an image service using the ArcGIS Server Image extension.

When a raster dataset is added to an image service definition, a footprint polygon is created. When the image service is published, each raster is clipped to its footprint. The footprint is not always the extent of each raster dataset, but it can be the extent of the valid raster data within the datasets. The footprint can be modified to exclude contents of a raster dataset, such as a border, an area of cloud cover, or a classified area.

When adding raster datasets, the footprints may not be correctly defined, because sufficient metadata about the extents may not be available. Also, adding or modifying processes that change the georeferencing of the raster data, such as orthorectification, may require the footprint to be recomputed.

Based on the raster dataset type, you will have to choose the most appropriate footprint recomputation method. There are various parameters that need to be specified based on the recomputing method you choose. Some recomputing methods are provided with options to specify the most commonly used parameter values that are used to redefine footprints for different types of imagery. These values can be modified through the Advanced tab.

All the footprint recomputation methods can be applied on every feature in the footprint or on a selected set.

There are several ways to edit the footprint polygons. You can use the editing tools within ArcMap to modify the shape of each footprint polygon, or you can use one of the following automatic methods provided on the Footprint layer context menu:

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4/19/2011