The ptwt package – API reference

• Fast Wavelet Transform (FWT) using padded convolutions
  • 1d decomposition using wavedec()
  • 2d decomposition using wavedec2()
  • 3d decomposition using wavedec3()
  • Fully separable 2d decomposition using fswavedec2()
  • Fully separable 3d decomposition using fswavedec3()
• Inverse Fast Wavelet Transform (iFWT) using padded convolutions
  • 1d reconstruction using waverec()
  • 2d reconstruction using waverec2()
  • 3d reconstruction using waverec3()
  • Fully separable 2d reconstruction using fswaverec2()
  • Fully separable 3d reconstruction using fswaverec3()
• Sparse-matrix based Fast Wavelet Transform (FWT)
  • 1d decomposition using MatrixWavedec
  • 2d decomposition using MatrixWavedec2
  • 3d decomposition using MatrixWavedec3
  • Sparse-matrix FWT base class
• Sparse-matrix based Inverse Fast Wavelet Transform (iFWT)
  • 1d reconstrucion using MatrixWaverec
  • 2d reconstrucion using MatrixWaverec2
  • 3d reconstrucion using MatrixWaverec3
• Wavelet Packet Transform (WPT)
  • Packets in 1d using WaveletPacket
  • Packets in 2d using WaveletPacket2D
  • Node ordering
• Stationary Wavelet Transform (SWT)
  • swt()
  • iswt()
• Continuous Wavelet Transform (CWT)
  • cwt()
• Wavelet transform return types
  • Transforms in one dimension
  • Transforms in two dimensions
  • Transforms in N dimensions
  • Fully separable 2d transforms
• Boundary handling modes
  • Signal extension via padding
  • Boundary wavelets
• Learnable adaptive wavelets
  • ProductFilter
  • SoftOrthogonalWavelet
  • WaveletFilter
• Sparse-matrix backend functions
  • batch_mm()
  • cat_sparse_identity_matrix()
  • construct_conv2d_matrix()
  • construct_conv_matrix()
  • construct_strided_conv2d_matrix()
  • construct_strided_conv_matrix()
  • sparse_diag()
  • sparse_kron()
  • sparse_replace_row()
• Other functions
  • Version information