Module imagingbook.spectral
Package imagingbook.spectral.dft

Interface Dft2d

All Known Subinterfaces:
Dft2d.Double, Dft2d.Float
All Known Implementing Classes:
Dft2dDirect, Dft2dDirect.Double, Dft2dDirect.Float, Dft2dFast, Dft2dFast.Double, Dft2dFast.Float
public interface Dft2d

Common interface for all 2D DFT/FFT implementations. Data arrays are indexed as data[x][y], with 0 ≤ x < width and 0 ≤ y < height. Based on associated one-dimensional DFT/FFT methods (see Dft1d). See Ch. 19 of [1] for additional details.

[1] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction, 3rd ed, Springer (2022).

Version:
2022/10/21
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static interface 
    Dft2d.Double
    Sub-interface for 2D DFT implementations operating on double data.
    static interface 
    Dft2d.Float
    Sub-interface for 2D DFT implementations operating on float data.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getHeight()
    Returns the 'height' of the 2D data array (length of dimension 1).
    ScalingMode
    getScalingMode()
    Returns the scaling mode of this DFT (see ScalingMode).
    int
    getWidth()
    Returns the 'width' of the 2D data array (length of dimension 0).

  • Method Details

    • getWidth

      int getWidth()
      Returns the 'width' of the 2D data array (length of dimension 0). Data arrays are indexed as data[x][y], with 0 ≤ x < width and 0 ≤ y < height.
      Returns:
      the width of the 2D data array

    • getHeight

      int getHeight()
      Returns the 'height' of the 2D data array (length of dimension 1). Data arrays are indexed as data[x][y], with 0 ≤ x < width and 0 ≤ y < height.
      Returns:
      the height of the 2D data array

    • getScalingMode

      ScalingMode getScalingMode()
      Returns the scaling mode of this DFT (see ScalingMode).
      Returns:
      the scaling mode of this DFT.