Image Fusion

The fusion operation allows combination of images with different spectral and spatial resolution keeping the radiometric information. A huge effort has been put in developing fusion methods that preserve the spectral information and increase detail information in the hybrid product produced by the fusion process. The available methods in TerraAmazon are:

Select PROCESSING → RASTER PROCESSING → FUSION in the main menu.


On the List of Layers select the raster layer with a lower resolution.

Optionally use Filter By Name field giving part of the layer name to help find the layer in the list.

Press the Next button to go to next step or the Cancel button to close the dialog.


On the List of Layers select the raster layer with a higher resolution.

Optionally use Filter By Name field giving part of the layer name to help find the layer in the list.

Press the Next button to go to next step.


Fusion parameters

Select the Type of fusion to be used and set the their specific parameters.For each fusion method the user has to set up parameters in high-resolution, low-resolution or wavelet tabs.

IHS

Select the raster band index to process from the high resolution raster.

Select the raster band index from the lower resolution raster for the red channel.

Select the raster band index from the lower resolution raster for the green channel.

Select the raster band index from the lower resolution raster for the blue channel.

PCA

Select the raster band index to process from the high resolution raster.

Select each raster band index from the lower resolution raster will be part of the process.

WISPER

Select the raster band index to process from the high resolution raster.

Set the sensor type for the selected band.

Select and set the sensor type to each band of the lower resolution raster.

Select the filter type (wavelet parameter).

Define the number of decomposition levels (wavelet parameter).



The common options for all methods are:

Select the interpolator method to be used: nearest neighbor, bilinear or cubic.

Crop rasters to overlap area. This is necessary if the input rasters has different extents.

Press the Next button.

Output information

Raster Info - First press and inform the folder where the resulting file will be saved.

Name - inform the raster name.

Extra Parameters - if there are some.

Press the Finish button to save the resulting fused raster.