The Image Dataset Properties panel contains modules for datasets, coordinate systems, and image information. Below is a detailed description of each module:

Dataset

Click Dataset in the Properties panel to view the attributes of the currently selected image dataset. The parameters are described as follows:

• Basic Information:
  • Name: Displays the name of the image dataset.
  • File Path: Displays the path of the image dataset. This parameter is shown when opening image files in file database mode.
  • Size: Displays the size of the image files. This parameter is shown when opening image files in file database mode.
  • Type: Displays the type of the dataset.
  • Table Name: For database datasources, displays the name of the data table corresponding to this dataset in the database; for file databases, displays the name of this dataset's properties table.
  • Encoding: Displays the encode type of the image dataset, which is the compression encode type when the dataset is stored. For detailed information on dataset encode types, see: List of Compression Encode Types for Dataset Storage.
• Dataset Bounds:
  • The top and bottom values represent the boundaries along the Y-axis (i.e., 'Y='), and the left and right values represent the boundaries along the X-axis (i.e., 'X='). The units are the same as those of the dataset. You can directly enter values to modify them, and click the Apply button at the bottom right of the properties panel to make it effective.
    Note:

    If the original image dataset has no bounds, the right and top values in the dataset bounds of the properties panel represent the resolution * number of columns and resolution * number of rows, respectively.

  • Copy and Paste: Click the Copy button to copy the current dataset bounds, or click the Paste button to set the copied bounds' left, bottom, right, and top values to the current range.
• Dataset Description: Displays the description of the image dataset. Users can edit the dataset's description.

Coordinate System

Click Coordinate System in the Properties panel to switch the panel display to the coordinate system information of the currently selected image dataset. The parameters are described as follows:

• Coordinate System: Displays the coordinate system information of the image dataset.
• Geographic Unit: Displays the distance unit of the image dataset.
• Coordinate System Information: Displays the detailed description information of the image dataset's projection.

Description of the buttons above the coordinate system information display area:

• Reset: Click this button to pop up the Projection Settings dialog box, to reset the coordinate projection of the dataset. For specific settings, see the Projection Settings window.
• Copy: Click this button to pop up the Copy Coordinate System dialog box, to copy coordinate system information as the projection for the current dataset. The system provides three ways to copy the coordinate system: copy the coordinate projection of an existing data source in the current workspace, copy the coordinate projection of an existing dataset in the current workspace, or copy a specified projection info file from the local system. The system supports seven types of projection info files: TIFF File (*.TIF), SIT (*.SIT), Erdas Image File (*.IMG), ArcGIS Shapefile File (*.SHP), MapInfo Exchange Format (*.MIF), MapInfo TAB File (*.TAB), and Projection Info File (*.XML).
• Export: Export the dataset's projection to a projection info file (*.xml).
• Import: Import a *.xml file containing coordinate system information, and use the coordinate system in the file as the dataset's coordinate system.
• Convert: Click this button to pop up the Project dialog box, to convert the current projection of the selected dataset. For specific settings, see the operation instructions for the Project dialog box in Project.

Image

Click the Image option in the Properties panel, and the panel will display the image properties information of the image dataset.

Image Information:

• Number of Bands: Displays the number of bands in the multi-band image dataset.
• X Resolution: Displays the resolution of the image dataset in the X direction.
• Y Resolution: Displays the resolution of the image dataset in the Y direction.
• Raster Tiling: Displays the size of the raster tiles for the current image dataset. As shown in the figure above, every 256*256 pixels are stored as a raster tile, and during data processing, a raster tile is processed together.
• NoData Value: Refers to values in the image data that have no practical meaning, represented as RGB decimal integer values. After adding the dataset to the map window, you can reset the NoData value. In the layer properties panel, the expression of NoData is linked to vertex color. For example, if vertex color is RGB and NoData is 96555, it will be displayed as (1,21,43) in the layer properties panel.

Note:

For image files opened as read-only, after modifying the NoData value of the image dataset, the new NoData value is invalid when calculating image histograms and statistical data.

• Number of Rows: Displays the number of rows in the pixel array of the image dataset.
• Number of Columns: Displays the number of columns in the pixel array of the image dataset.

Image Metadata:

This group of attributes is provided when opening remote sensing raw image files with RPC information in *.xml or *.txt format. If the original image has been opened in *.xml or *.txt format, this group information can still be obtained when switching to *.tif or *.tiff format for opening.

• Sensor Name: Displays the name of the sensor that acquired the remote sensing image files, such as GF-2, SuperView-1.
• Product Name: Displays