Package icyllis.arc3d.core

Class ColorSpace.Rgb.TransferParameters

java.lang.Object
icyllis.arc3d.core.ColorSpace.Rgb.TransferParameters
Enclosing class:
ColorSpace.Rgb
public static class ColorSpace.Rgb.TransferParameters extends Object

Defines the parameters for the ICC parametric curve type 4, as defined in ICC.1:2004-10, section 10.15.

The EOTF is of the form:

\(\begin{equation} Y = \begin{cases}c X + f invalid input: '&' X \lt d \\\ \left( a X + b \right) ^{g} + e invalid input: '&' X \ge d \end{cases} \end{equation}\)

The corresponding OETF is simply the inverse function.

The parameters defined by this class form a valid transfer function only if all the following conditions are met:

  • No parameter is a Not-a-Number
  • \(d\) is in the range \([0..1]\)
  • The function is not constant
  • The function is positive and increasing

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    final double
    a
    Variable \(a\) in the equation of the EOTF described above.
    final double
    b
    Variable \(b\) in the equation of the EOTF described above.
    final double
    c
    Variable \(c\) in the equation of the EOTF described above.
    final double
    d
    Variable \(d\) in the equation of the EOTF described above.
    final double
    e
    Variable \(e\) in the equation of the EOTF described above.
    final double
    f
    Variable \(f\) in the equation of the EOTF described above.
    final double
    g
    Variable \(g\) in the equation of the EOTF described above.

  • Constructor Summary

    Constructors
    Constructor
    Description
    TransferParameters(double a, double b, double c, double d, double g)
    Defines the parameters for the ICC parametric curve type 3, as defined in ICC.1:2004-10, section 10.15.
    TransferParameters(double a, double b, double c, double d, double e, double f, double g)
    Defines the parameters for the ICC parametric curve type 4, as defined in ICC.1:2004-10, section 10.15.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    equals(Object o)
     
    int
    hashCode()
     

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • a

      public final double a
      Variable \(a\) in the equation of the EOTF described above.

    • b

      public final double b
      Variable \(b\) in the equation of the EOTF described above.

    • c

      public final double c
      Variable \(c\) in the equation of the EOTF described above.

    • d

      public final double d
      Variable \(d\) in the equation of the EOTF described above.

    • e

      public final double e
      Variable \(e\) in the equation of the EOTF described above.

    • f

      public final double f
      Variable \(f\) in the equation of the EOTF described above.

    • g

      public final double g
      Variable \(g\) in the equation of the EOTF described above.

  • Constructor Details

    • TransferParameters

      public TransferParameters(double a, double b, double c, double d, double g)

      Defines the parameters for the ICC parametric curve type 3, as defined in ICC.1:2004-10, section 10.15.

      The EOTF is of the form:

      \(\begin{equation} Y = \begin{cases}c X invalid input: '&' X \lt d \\\ \left( a X + b \right) ^{g} invalid input: '&' X \ge d \end{cases} \end{equation}\)

      This constructor is equivalent to setting \(e\) and \(f\) to 0.

      Parameters:
      a - The value of \(a\) in the equation of the EOTF described above
      b - The value of \(b\) in the equation of the EOTF described above
      c - The value of \(c\) in the equation of the EOTF described above
      d - The value of \(d\) in the equation of the EOTF described above
      g - The value of \(g\) in the equation of the EOTF described above
      Throws:
      IllegalArgumentException - If the parameters form an invalid transfer function

    • TransferParameters

      public TransferParameters(double a, double b, double c, double d, double e, double f, double g)

      Defines the parameters for the ICC parametric curve type 4, as defined in ICC.1:2004-10, section 10.15.

      Parameters:
      a - The value of \(a\) in the equation of the EOTF described above
      b - The value of \(b\) in the equation of the EOTF described above
      c - The value of \(c\) in the equation of the EOTF described above
      d - The value of \(d\) in the equation of the EOTF described above
      e - The value of \(e\) in the equation of the EOTF described above
      f - The value of \(f\) in the equation of the EOTF described above
      g - The value of \(g\) in the equation of the EOTF described above
      Throws:
      IllegalArgumentException - If the parameters form an invalid transfer function

  • Method Details