Instructions for Use
Image fusion is a technique that combines and transforms multiple images from different times, sensor systems, resolutions, and spectral bands through various methods to generate new images. For example, fusing a panchromatic orthoimage with a multispectral orthoimage can produce high-quality imagery with both high spatial and spectral resolution. This technology effectively combines the advantages of various types of imagery, providing richer information support for subsequent analysis and applications.
SuperMap iDesktopX supports this feature starting from version 11i(2023).
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Figure: Multispectral Before Fusion | Figure: Panchromatic Before Fusion | Figure: Multispectral After Fusion |
Parameter Description
Parameter Name | Parameter Interpretation | Parameter Type |
Data Type |
This parameter is available only when the function is launched from the Imagery tab -> DOM Data Production group -> Image Fusion. Select the source of the input image data, with two options: Image Files and Mosaic Dataset. The default is Image Files. Use the Image File List to manage image files with functions like Add, Select All, Select Reverse, Delete, and Settings.
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Panchromatic Data Source |
This parameter is available only when the function is launched from the Imagery tab -> DOM Data Production group -> Image Fusion. After selecting Mosaic Dataset in Data Type, specify the data source where the panchromatic image data is located. |
DataSource |
Panchromatic Data | After selecting Mosaic Dataset in Data Type, specify the mosaic dataset where the panchromatic image data is located. If it is part of a workflow production, it is display-only and cannot be edited. | DatasetMosaic |
Multispectral Data Source |
This parameter is available only when the function is launched from the Imagery tab -> DOM Data Production group -> Image Fusion. After selecting Mosaic Dataset in Data Type, specify the data source where the multispectral image data is located. |
DataSource |
Multispectral Data | After selecting Mosaic Dataset in Data Type, specify the mosaic dataset where the multispectral image data is located. If it is part of a workflow production, it is display-only and cannot be edited. | DatasetMosaic |
Fusion Method |
Specifies the image fusion method. The default method is Gram-Schmidt.
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FusionMethod |
Predefined Fusion Weights | Check this box to use predefined weights for fusion, but it is only effective for the PanSharp and Gram-Schmidt methods. If unchecked, adaptive weights are used for fusion. | Boolean |
Sharpening Factor | Used to adjust the clarity of the fused image. The default is 1. | Double |
Resampling Method | Sets the resampling method after image fusion. Options include Nearest, Bilinear, and Cubic. The default is Bilinear. For more method details, refer to Resampling Method. | ResampleMethod |
Export Directory |
Sets the storage path for the result image. If executing a production workflow, use the Process parameter in Set Image Path or Add Orthophoto, and this field is not editable here. |
File |
Output Format |
Sets the storage type for the result image. Options include Not Set, Tiff/GeoTIFF, Erdas Image, and PCIDSK. The default is Tiff/GeoTIFF. Selecting Not Set means using the original storage type of the image for output. If executing a production workflow, use the Output Format parameter in Set Image Path or Add Orthophoto, and this field is not editable here. |
FileType |
Compression Method |
Sets the compression method for the output image. Available only when the output format is Tiff/GeoTIFF. The default is NONE. If executing a production workflow, use the Compression Method parameter in Set Image Path or Add Orthophoto, and this field is not editable here. |
CompressMethod |
Add Results to Map Window |
This parameter is available only when the function is launched from the Imagery tab -> DOM Data Production group -> Image Fusion. Checked by default, meaning the result data will be added to the map window for display after successful execution. |
Boolean |
Create Image Pyramid | Checked by default. Builds pyramids for the image data based on the specified resampling method to improve image zoom display rendering and performance. | Boolean |
Resampling Method | Available after checking Create Image Pyramid. The default is Average. For more method details, refer to Resampling Method. | PyramidResampleType |
Asynchronously Create Statistics | During image browsing, the layer will be stretched based on statistical information. If the image lacks statistical information, it will be displayed using the default stretch method, and 8-bit data will not be stretched. Checked by default, meaning statistics will be created for the image in the background without affecting workflow execution. If unchecked, statistics will be created during tool execution, which may take additional time. | Boolean |
Output Result
- Outputs image data combining features of panchromatic and multispectral images to a local folder.
- Automatically creates an image fusion mosaic dataset in the OrthoData data source based on the output image data.
Related Topics
Multispectral and Panchromatic Registration