FourierTransform.h

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//     ____   ______ __
//    / __ \ / ____// /
//   / /_/ // /    / /
//  / ____// /___ / /___   PixInsight Class Library
// /_/     \____//_____/   PCL 2.7.0
// ----------------------------------------------------------------------------
// pcl/FourierTransform.h - Released 2024-06-18T15:48:54Z
// ----------------------------------------------------------------------------
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// ----------------------------------------------------------------------------
 
#ifndef __PCL_FourierTransform_h
#define __PCL_FourierTransform_h
 
 
#include <pcl/Defs.h>
#include <pcl/Diagnostics.h>
 
#include <pcl/FFT1D.h>
#include <pcl/FFT2D.h>
#include <pcl/ImageTransformation.h>
#include <pcl/ParallelProcess.h>
 
namespace pcl
{
 
// ----------------------------------------------------------------------------
 
namespace FFTDirection
{
   enum value_type
   {
      Forward,
      Backward
   };
}
 
// ----------------------------------------------------------------------------
 
class PCL_CLASS InPlaceFourierTransform : public ImageTransformation, public ParallelProcess
{
public:
 
   using transform_type = FFTDirection::value_type;
 
   InPlaceFourierTransform( transform_type type = FFTDirection::Forward )
      : m_type( type )
   {
   }
 
   InPlaceFourierTransform( const InPlaceFourierTransform& ) = default;
 
   ~InPlaceFourierTransform() override
   {
   }
 
   transform_type Type() const
   {
      return m_type;
   }
 
protected:
 
   transform_type m_type;
 
   // In-place FFT of complex images.
   void Apply( pcl::ComplexImage& ) const override;
   void Apply( pcl::DComplexImage& ) const override;
};
 
// ----------------------------------------------------------------------------
 
class PCL_CLASS InPlaceInverseFourierTransform : public InPlaceFourierTransform
{
public:
 
   InPlaceInverseFourierTransform()
      : InPlaceFourierTransform( FFTDirection::Backward )
   {
   }
 
   InPlaceInverseFourierTransform( const InPlaceInverseFourierTransform& ) = default;
 
   ~InPlaceInverseFourierTransform() override
   {
   }
};
 
// ----------------------------------------------------------------------------
 
class PCL_CLASS FourierTransform : public BidirectionalImageTransformation, public ParallelProcess
{
public:
 
   FourierTransform() = default;
 
   FourierTransform( const FourierTransform& ) = default;
 
   FourierTransform( FourierTransform&& ) = default;
 
   ~FourierTransform() override
   {
   }
 
   FourierTransform& operator =( const FourierTransform& ) = default;
 
   FourierTransform& operator =( FourierTransform&& ) = default;
 
   const ImageVariant& DFT() const
   {
      return m_dft;
   }
 
   ImageVariant& DFT()
   {
      return m_dft;
   }
 
   const ImageVariant& operator *() const
   {
      return DFT();
   }
 
   ImageVariant& operator *()
   {
      return DFT();
   }
 
   ImageVariant ReleaseTransform()
   {
      ImageVariant r;
      m_dft.ReleaseTo( r );
      return r;
   }
 
   void Clear()
   {
      m_dft.Free();
   }
 
protected:
 
   // Discrete 2-D Fourier Transform
   ImageVariant m_dft;
 
   // Transform
   void Transform( const pcl::Image& ) override;
   void Transform( const pcl::DImage& ) override;
   void Transform( const pcl::ComplexImage& ) override;
   void Transform( const pcl::DComplexImage& ) override;
   void Transform( const pcl::UInt8Image& ) override;
   void Transform( const pcl::UInt16Image& ) override;
   void Transform( const pcl::UInt32Image& ) override;
 
   // Inverse transform
   void Apply( pcl::Image& ) const override;
   void Apply( pcl::DImage& ) const override;
   void Apply( pcl::ComplexImage& ) const override;
   void Apply( pcl::DComplexImage& ) const override;
   void Apply( pcl::UInt8Image& ) const override;
   void Apply( pcl::UInt16Image& ) const override;
   void Apply( pcl::UInt32Image& ) const override;
};
 
// ----------------------------------------------------------------------------
 
} // pcl
 
#endif   // __PCL_FourierTransform_h
 
// ----------------------------------------------------------------------------
// EOF pcl/FourierTransform.h - Released 2024-06-18T15:48:54Z