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

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 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.

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.