GrayScaleMorphologicalOperation - Grayscale Morphological Operation

Performs morphological operations on a grayscale input image

Detailed description

This application performs grayscale morphological operations on a mono band image


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 GrayScaleMorphologicalOperation .

[1]Table: Parameters table for Grayscale Morphological Operation.
Parameter Key Parameter Name Parameter Type
in Input Image Input image
out Feature Output Image Output image
channel Selected Channel Int
ram Available RAM (Mb) Int
structype Structuring Element Type Choices
structype ball Ball Choice
structype cross Cross Choice
structype.ball.xradius The Structuring Element X Radius Int
structype.ball.yradius The Structuring Element Y Radius Int
filter Morphological Operation Choices
filter dilate Dilate Choice
filter erode Erode Choice
filter opening Opening Choice
filter closing Closing Choice
inxml Load otb application from xml file XML input parameters file
outxml Save otb application to xml file XML output parameters file

Input Image: The input image to be filtered.

Feature Output Image: Output image containing the filtered output image.

Selected Channel: The selected channel index.

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

Structuring Element Type: Choice of the structuring element type. Available choices are:

  • Ball
  • The Structuring Element X Radius: The Structuring Element X Radius.
  • The Structuring Element Y Radius: The Structuring Element Y Radius.
  • Cross

Morphological Operation: Choice of the morphological operation. Available choices are:

  • Dilate
  • Erode
  • Opening
  • Closing

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

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


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

otbcli_GrayScaleMorphologicalOperation -in qb_RoadExtract.tif -out opened.tif -channel 1 -structype.ball.xradius 5 -structype.ball.yradius 5 -filter erode

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


# Import the otb applications package
import otbApplication

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

# The following lines set all the application parameters:
GrayScaleMorphologicalOperation.SetParameterString("in", "qb_RoadExtract.tif")

GrayScaleMorphologicalOperation.SetParameterString("out", "opened.tif")

GrayScaleMorphologicalOperation.SetParameterInt("channel", 1)

GrayScaleMorphologicalOperation.SetParameterInt("structype.ball.xradius", 5)

GrayScaleMorphologicalOperation.SetParameterInt("structype.ball.yradius", 5)


# The following line execute the application




This application has been written by OTB-Team.

See Also

These additional resources can be useful for further information:
itkGrayscaleDilateImageFilter, itkGrayscaleErodeImageFilter, itkGrayscaleMorphologicalOpeningImageFilter and itkGrayscaleMorphologicalClosingImageFilter classes