About the New Image Service Wizard parameters

You can use the New Image Service Wizard to create an image service, including adding raster data, optimizing the image service definition, enhancing the imagery or visualizing the elevation data, and compiling the service. This section will discuss the parameters that you need to enter as you go through the entire wizard.

Learn about creating a new image service definition

To open the New Image Service Wizard, click the Image Service drop-down menu on the Image Service Definition Editor toolbar and click New Image Service. The sequence of the wizard panels that appear when you perform the required steps is as follows:

Below is the welcome panel of the New Image Service Wizard.

Click Next to move to the next panel.

On this panel, you need to specify the new image service definition by editing the default parameters.

Image service definition parameters

Field	Description
New image service location	Path and name of the image service definition folder.
Spatial reference system	Defines the spatial reference system used for the image service. This is used for all internal searches and derived tiles. The spatial reference should be chosen such that no coordinate system boundaries exist within the extents of the required image service definition.
Service type	Defines the type of service to be created. All input rasters are converted to this type of raster for mosaicking internally prior to applying a service process. After defining the service type, it should not be changed. The type of output imagery can be changed later using a service process. There are three service types—Color (RGB), Panchromatic, and Elevation—that have the default number of bands and pixel type defined.

Image service definition parameters

Different panels appear when you click Next, depending on the service type you selected. If you choose Color or Panchromatic, you see the panel for adding the input data; however, if you choose Elevation, you see one or two additional panels before the panel to add the input data.

When you choose the Elevation service type, the following wizard panel appears:

Elevation image service definition parameters

Field	Description
To visualize the terrain	The options under this button enable you to choose the method used to display the elevation model. Visualization method—Enables you to visualize the elevation data using the following methods: hillshade, elevation coded, and shaded relief. Azimuth—Defines the sun's relative position along the horizon (in degrees), which, along with altitude, is used to create the hillshade or shaded relief. This parameter need not be specified when the method is elevation coded. Altitude—Defines the sun's angle of elevation above the horizon (in degrees), which, along with azimuth, is used to create the hillshade or shaded relief. This parameter need not be specified when the method is elevation coded. Z-factor—Used to scale the z-value.
As an elevation image service	Enables you to use the image service definition as elevation. This is often used to create an image service definition for the terrain input in an orthorectified image service definition or as elevations for use in globes. Such an elevation image service can later be visualized using the Visualize Elevation process.

Elevation image service definition parameters

Selecting Elevation Coded or Shaded Relief as the visualization method and clicking Next opens the following wizard panel; otherwise, you see the panel for adding the input data. This panel allows you to specify the properties of the elevation coded or shaded relief visualization methods.

These parameters define how the elevation values are symbolized.

Symbolizing elevation parameters

Field	Description
Generated on-the-fly	The symbology file created on the fly based on either equal intervals or standard deviation
Load from symbology file	Path of the symbology file that is used to display the terrain model
Low Color	First color in the color ramp used to symbolize the elevation model
High Color	Last color in the color ramp used to symbolize the elevation model
Number of entries	Number of entries in the color ramp used for rendering the elevation values
Break classes at	Number of standard deviations used to define class breaks
Smooth gradient	When checked, smooths the gradient

Symbolizing elevation parameters

When you choose either the Color or Panchromatic service type, you are directed straight to the panel below to begin identifying the input data; otherwise, you see the above two panels.

This panel allows you to choose the raster data to add to the image service definition. You need to define the following parameters:

Image service definition input data parameters

Field	Description
Raster type	Choose the type of raster, which is added to your image service definition.
Input	File—Select a single raster file. Folder—Select a folder containing multiple raster files. Recursively search subdirectories—Search for rasters in folders contained within the selected folder.
Use this spatial reference for all input data	Check this option to use the spatial reference system of your choice for all input data. If not checked, the spatial reference defined within the raster dataset is used. If the spatial reference of raster is not available, the spatial reference of the image service definition is used.
Band combination	Depending on the type of raster you have selected, the default band combination is displayed. You can click the drop-down arrow to choose a combination.
Apply pansharpening	This option is enabled when your selected raster type allows panchromatic sharpening. Check this option to apply panchromatic sharpening to your image service definition.

Image service definition input data parameters

There is a different Select Raster Type panel for elevation data than for color or panchromatic data.

There are three folders that group the raster types:

• Georeferenced Imagery—Contains raster types that add georeferenced raster data such as orthorectified imagery or scanned and georeferenced maps
• Orthorectification—Contains raster types that add nongeoreferenced imagery and utilizes the metadata information that defines how the raster data should be orthorectified
• Elevation—Contains raster types that add rasters containing elevation values

The ArcGIS Raster Datasets raster type is used to load raster types not listed specifically in the raster type folders but supported by ArcGIS. This includes ArcSDE raster dataset support. The Raster Process Definition (.RPDef) files raster type allows you to add an image service definition as an input raster.

• For an elevation image service definition, when you click the Raster type browse button , the following Select Raster Type dialog box is displayed; the elevation raster types are organized in the Elevation folder.
• For a color or panchromatic image service definition, when you click the Raster type browse button , the following Select Raster Type dialog box is displayed; the raster types are organized into two folders: Georeferenced Imagery and Orthorectification.

After selecting the raster type, input data, spatial reference, and band combination, the next panel allows you to enhance the imagery displayed in your image service definition.

Image service definition input data parameters

Field	Description
Apply stretch	Defines the type of histogram stretching that is applied to the raster datasets to enhance them Percentile—Range used to compute lower and upper input values used in the stretching process Standard deviation—Lower and upper input values computed using standard deviation of pixel values of the raster; uses standard deviation factor Min-Max—Stretches to the minimum and maximum values in the histogram
Apply gamma	Defines how the gamma correction value is computed Fixed value—User-specified value is used; when selected, requires gamma value to be specified Target color—Gamma computed based on the present average color of the raster and user-specified target color

Image service definition input data parameters

If you have selected an orthorectification raster type, the following panel appears after you specify your image service definition enhancement display properties:

Height source for orthorectifying data

Field	Description
Elevation model	Defines the terrain of the imagery as an elevation model and allows you to choose the DEM input
Fixed elevation	Defines the terrain of the imagery as a fixed elevation model and allows you to specify the elevation value
Average elevation	Defines the terrain of the imagery as an average elevation model

Height source for orthorectifying data

After enhancing the display of the image service definition, the following wizard panel appears:

If you want to add more raster data to your image service definition, click the Yesbutton; otherwise, leave the default as No. On this panel, you have the option to create service overviews and compile the image service definition file for publishing.

Once you've completed defining all the raster data to add to the image service definition and setting parameters, the metadata panel appears, where you can add information about the image service definition you are creating.

Image service definition information

Field	Description
Service name	Default name of the image service definition that is displayed when published by ArcGIS Image Server. The service name can include a backslash (\) to form a folder structure enabling services to be logically grouped for the clients, for example, "Germany\Amberg" or "Germany\Another City."
Title	Descriptive title for the image service definition.
Geographic region	Description of the geographic region, for example, town, state, country. This information assists clients when choosing an image service.
Pixel unit	Describes pixel units of imagery, for example, true color, false color, NDVI legend, radiance, elevation in meters, and elevation in feet.
Pixel source	Source from which the pixel values are obtained. This is generally the sensor type or the original source, such as aerial photography, scanned map, or Landsat.
Publisher	Publisher of the image service definition.
Contact organization	Organization that needs to be contacted to inquire about the image service definition.

Image service definition Information

The final panel displays the summary of the parameters you have specified for your image service definition. If any changes are required, you can click the Back button to go to the corresponding panel.

注意:

The services created using the New Image Service wizard do not contain histogram statistics by default. You may have to build using the Compute output properties option, then compile the service to generate the histogram statistics. This can be viewed on the Source and Symbology tabs of the Layer properties dialog box in ArcMap.