Class RatioPrincipalAxisLength

Object
AnchorBean<Feature<FeatureInputSingleObject>>
InitializableBean<Feature<FeatureInputSingleObject>, FeatureInitialization>
Feature<FeatureInputSingleObject>
FeatureSingleObject
ImageMomentsBase
RatioPrincipalAxisLength
public class RatioPrincipalAxisLength extends ImageMomentsBase
Calculates the ratio of prinicpal-axis length using Image Moments.

Specifically this is the highest-magnitude eigen-value (normalized) to second-highest (normalized) eigen-value.

See Image moment on Wikipedia for the precise calculation.

See Stack overflow post for the normalization procedure.

Author:
Owen Feehan

  • Constructor Summary

    Constructors
    Constructor
    Description
    RatioPrincipalAxisLength()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected double
    calculateFromAllMoments(ImageMoments moments)
    Calculates the feature value from the ImageMoments.
    protected String
    errorMessageIfTooFewPixels()
    Generates an error message when there are too few pixels to calculate moments.

    Methods inherited from class org.anchoranalysis.plugin.image.feature.bean.object.single.moments.ImageMomentsBase

    calculate, getValueIfTooFewVoxels, isSuppressZ, setSuppressZ, setValueIfTooFewVoxels

    Methods inherited from class org.anchoranalysis.image.feature.bean.object.single.FeatureSingleObject

    inputType

    Methods inherited from class org.anchoranalysis.feature.bean.Feature

    assignTo, beforeCalc, calculateCheckInitialized, castAs, createListChildFeatures, describeBean, describeParameters, descriptionLong, duplicateChangeName, getCustomName, getFriendlyName, onInitialization, setCustomName, toString

    Methods inherited from class org.anchoranalysis.bean.initializable.InitializableBean

    getInitialization, getLogger, getPropertyInitializer, initialize, initializeRecursive, initRecursiveWithInitializer, isInitialized

    Methods inherited from class org.anchoranalysis.bean.AnchorBean

    checkMisconfigured, describeChildren, duplicateBean, fields, findFieldsOfClass, getBeanName, getLocalPath, localise

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • RatioPrincipalAxisLength

      public RatioPrincipalAxisLength()

  • Method Details

    • calculateFromAllMoments

      protected double calculateFromAllMoments(ImageMoments moments) throws FeatureCalculationException
      Description copied from class: ImageMomentsBase
      Calculates the feature value from the ImageMoments.
      Specified by:
      calculateFromAllMoments in class ImageMomentsBase
      Parameters:
      moments - the ImageMoments to use for calculation
      Returns:
      the calculated feature value
      Throws:
      FeatureCalculationException - if the calculation fails

    • errorMessageIfTooFewPixels

      protected String errorMessageIfTooFewPixels()
      Description copied from class: ImageMomentsBase
      Generates an error message when there are too few pixels to calculate moments.
      Specified by:
      errorMessageIfTooFewPixels in class ImageMomentsBase
      Returns:
      the error message as a String