Class DSS.DSSInv

java.lang.Object
skyview.geometry.Transformer
skyview.geometry.Distorter
skyview.geometry.distorter.DSS.DSSInv
All Implemented Interfaces:
java.io.Serializable, Component
Enclosing class:
DSS

public class DSS.DSSInv
extends Distorter
This inner class is the inverse of the DSS Distorter and corrects the distortion generated there. For the DSS projection, this direction is described analytically using a polynomial expansion, while the 'forward' distortion must be done by inverting the polynomial using Newton's method.
See Also:
Serialized Form
  • Constructor Details

  • Method Details

    • invert

      public Distorter invert()
      Get the forward distorter back
    • getName

      public java.lang.String getName()
      Get the name of this component
      Specified by:
      getName in interface Component
      Specified by:
      getName in class Distorter
    • getDescription

      public java.lang.String getDescription()
      Get a description of this component
      Specified by:
      getDescription in interface Component
      Specified by:
      getDescription in class Distorter
    • inverse

      public Distorter inverse()
      Get the inverse Distorter
      Specified by:
      inverse in class Distorter
    • isInverse

      public boolean isInverse​(Transformer t)
      Is this the inverse of another distorter?
      Specified by:
      isInverse in class Transformer
    • transform

      public void transform​(double[] x, double[] y)
      Transform a point
      Specified by:
      transform in class Transformer
      Parameters:
      x - The input vector.
      y - The output vector, it may be the same as the input vector if the dimensionalities are the same. All transformers are expected to work with aliased inputs and output.
    • jacobian

      public double[][] jacobian​(double[] x)
      Description copied from class: Distorter
      Get the local Jacobian for the distortion. This implementation defers the calculation to the inverse distorter. Clearly this will need to be overriden in either the forward or backward distorter.
      Overrides:
      jacobian in class Distorter
      Parameters:
      x - The input position.
      Returns:
      The Jabobian matrix.