Grayscale Morphological Operation¶

Performs morphological operations on a grayscale input image

Detailed description¶

This application performs grayscale morphological operations on a mono band image

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 GrayScaleMorphologicalOperation .

[1]	Table: Parameters table for Grayscale Morphological Operation.

Parameter Key	Parameter Type	Parameter Description
in	Input image	Input image
out	Output image	Output image
channel	Int	Int
ram	Int	Int
structype	Choices	Choices
structype ball	Choice	Ball
structype cross	Choice	Cross
structype.ball.xradius	Int	Int
structype.ball.yradius	Int	Int
filter	Choices	Choices
filter dilate	Choice	Dilate
filter erode	Choice	Erode
filter opening	Choice	Opening
filter closing	Choice	Closing
inxml	XML input parameters file	XML input parameters file
outxml	XML output parameters 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.

Example¶

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:

#!/usr/bin/python

# 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)

GrayScaleMorphologicalOperation.SetParameterString("filter","erode")

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

Limitations¶

None

Authors¶

This application has been written by OTB-Team.