Pansharpening - Pansharpening

Perform P+XS pansharpening

Detailed description

This application performs P+XS pansharpening. Pansharpening is a process of merging high-resolution panchromatic and lower resolution multispectral imagery to create a single high-resolution color image. Algorithms available in the applications are: RCS, bayesian fusion and Local Mean and Variance Matching(LMVM).

Parameters

This section describes in details the parameters available for this application. Table [1] presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is Pansharpening .

[1]Table: Parameters table for Pansharpening.
Parameter Key Parameter Name Parameter Type
inp Input PAN Image Input image
inxs Input XS Image Input image
out Output image Output image
method Algorithm Choices
method rcs Choice RCS
method lmvm Choice LMVM
method bayes Choice Bayesian
method.lmvm.radiusx X radius Int
method.lmvm.radiusy Y radius Int
method.bayes.lambda Weight Float
method.bayes.s S coefficient Float
ram Available RAM (Mb) Int
inxml Load otb application from xml file XML input parameters file
outxml Save otb application to xml file XML output parameters file

Input PAN Image: Input panchromatic image.

Input XS Image: Input XS image.

Output image: Output image.

Algorithm: Selection of the pan-sharpening method. Available choices are:

  • RCS: Simple RCS Pan sharpening operation.
  • LMVM: Local Mean and Variance Matching (LMVM) Pan sharpening.
  • X radius: Set the x radius of the sliding window.
  • Y radius: Set the y radius of the sliding window.
  • Bayesian: Bayesian fusion.
  • Weight: Set the weighting value.
  • S coefficient: Set the S coefficient.

Available RAM (Mb): Available memory for processing (in MB).

Load otb application from xml file: Load otb application from xml file.

Save otb application to xml file: Save otb application to xml file.

Example

To run this example in command-line, use the following:

otbcli_Pansharpening -inp QB_Toulouse_Ortho_PAN.tif -inxs QB_Toulouse_Ortho_XS.tif -out Pansharpening.tif uint16

To run this example from Python, use the following code snippet:

#!/usr/bin/python

# Import the otb applications package
import otbApplication

# The following line creates an instance of the Pansharpening application
Pansharpening = otbApplication.Registry.CreateApplication("Pansharpening")

# The following lines set all the application parameters:
Pansharpening.SetParameterString("inp", "QB_Toulouse_Ortho_PAN.tif")

Pansharpening.SetParameterString("inxs", "QB_Toulouse_Ortho_XS.tif")

Pansharpening.SetParameterString("out", "Pansharpening.tif")
Pansharpening.SetParameterOutputImagePixelType("out", 3)

# The following line execute the application
Pansharpening.ExecuteAndWriteOutput()

Limitations

None

Authors

This application has been written by OTB-Team.