Import Image Bitmap File

Feature Description

This function is used to directly import various mainstream formats of image bitmap file, such as IMG, TIF, BMP, JPG, GIF, SIT (obsolete), etc. It enhances the flexibility and convenience when processing remote sensing imagery, aerial photos, satellite images, and other types of image data.

Function Entry

  • In the Start tab -> Data Processing -> Data Import -> Raster Image group -> Image Bitmap.
  • In the workspace manager -> Datasource context menu -> Import Dataset....
  • Tools in Toolbox -> Data Import -> Image Bitmap File.

Operation Steps

The following takes importing IMG and TIF files as an example to introduce how to import image bitmap file:

  1. In the Data Import dialog box, parameters such as target datasource, result dataset, encode type, import schema, and source file info under result settings. For details, please refer to the Data Import Common Parameters description page.
  2. Result:
    • Dataset Type: Sets the type of import data. The result types for importing raster data include Image and Raster for users to choose from. Selecting the Image option imports the file as an image dataset; selecting the Raster option imports the file as a GRID dataset.
  3. Transformation Parameters:
    • Band Import Schema: Used to set the band import schema when importing multi-band image data, such as Erdas Image File (*.img) and TIFF File (*.tif). The system provides two methods: Multi-band and Single Bands.
      • Multi-band: Imports multi-band data as a multi-band dataset. In the attribute window of the multi-band dataset, navigate to the image properties item to view its band table information.
      • Single Bands: Imports multi-band data as a single-band dataset.
    • Create an Image Pyramid: Check this box to create an image pyramid for the imported data when importing image data.
    • Coordinate Reference File: When importing image files (only valid for TIF files), *.tfw and *.jgw coordinate reference files can be imported. For an introduction to coordinate reference files, please refer to Image Geographic Coordinate Reference File.
  4. After setting the above parameters, click the Import button in the dialog box to import the specified data as image data.
Notes:
  • If importing single-band raster data, the import schemas: None and Append have the same effect. That is, if there is a name conflict between the imported data and existing datasets, the imported data will automatically be renamed and imported.
  • When importing data in *.img, *.tif, or *.tiff formats, the projected coordinate system of the result dataset after import is consistent with the projection of the source file; when importing data in *.bmp, *.png, *.jpg, or *.gif formats, the projected coordinate system of the result dataset after import is consistent with the projection of the datasource it belongs to.
  • Since image data in img format does not support the SphereMercator projection type, data with this projection type may lose projection after being exported as img. It is recommended to reset the projection when using it again.

Related Topics

Import IMG

Import TIF

Import PNG

Import JPG