Morphological Profiles Analysis

Brief Description

Performs morphological profiles analysis on an input image channel.

Tags

Feature Extraction, Morphology

Long Description

This algorithm is derived from the following publication:
Martino Pesaresi and Jon Alti Benediktsson, Member, IEEE: A new approach
for the morphological segmentation of high resolution satellite imagery.
IEEE Transactions on geoscience and remote sensing, vol. 39, NO. 2,
February 2001, p. 309-320.

Depending of the profile selection, the application provides::
- The multi scale geodesic morphological opening or closing profile of the input image.
- The multi scale derivative of the opening or closing profile.
- The parameter (called characteristic) of the maximum derivative value of the multi scale closing or opening profile for which this maxima occurs.
- The labeled classification of the input image.

The behavior of the classification is :
Given :math:`x_1` and :math:`x_2` two membership values,
:math:`L_1, L_2` two labels associated, and :math:`\sigma` a tolerance
value, the following decision rule is applied:
:math:`L = \begin{cases} L_{1} & : x_{1}>x_{2} \quad and \quad x_{1}>\sigma \\ L_{2} & : x_{2}>x_{1} \quad and \quad x_{2}>\sigma \\ 0 & : otherwise. \end{cases}`

The output image can be :- A :math:`N` multi band image for the opening/closing normal or derivative profiles.
- A mono band image for the opening/closing characteristics.
- A labeled image for the classification.

Parameters

• Input Image (in): The input image.

• Output Image (out): The output image.

• Selected Channel (channel): The selected channel index for input image

• Available RAM (Mb) (ram): Available memory for processing (in MB)

• Structuring Element Type (structype): Choice of the structuring element type

  • Ball (ball):

  • Cross (cross):



• Profile Size (size): Size of the profiles

• Initial radius (radius): Initial radius of the structuring element (in pixels)

• Radius step. (step): Radius step along the profile (in pixels)

• Profile (profile):

  • opening (opening):

  • closing (closing):

  • derivativeopening (derivativeopening):

  • derivativeclosing (derivativeclosing):

  • openingcharacteristics (openingcharacteristics):

  • closingcharacteristics (closingcharacteristics):

  • classification (classification):

    • Sigma value for leveling tolerance (profile.classification.sigma): Sigma value for leveling tolerance




• Load otb application from xml file (inxml): Load otb application from xml file

• Save otb application to xml file (outxml): Save otb application to xml file

Limitations

Generation of the morphological profile is not streamable, pay attention to this fact when setting the radius initial size and step of the structuring element.

Authors

OTB-Team

See also

otbMorphologicalOpeningProfileFilter, otbMorphologicalClosingProfileFilter, otbProfileToProfileDerivativeFilter, otbProfileDerivativeToMultiScaleCharacteristicsFilter, otbMultiScaleConvexOrConcaveClassificationFilter, classes

Example of use

• Values for GUIs:

• in: ROI_IKO_PAN_LesHalles.tif

• channel: 1

• structype: ball

• profile: classification

• size: 5

• radius: 1

• step: 1

• profile.classification.sigma: 1

• out: output.tif

• Command line to execute:

otbcli_MorphologicalProfilesAnalysis -in ROI_IKO_PAN_LesHalles.tif -channel 1 -structype ball -profile classification -size 5 -radius 1 -step 1 -profile.classification.sigma 1 -out output.tif