DomainTransform

Domain Transform application for wavelet and fourier

Description

Domain Transform application for wavelet and fourier.

Parameters

Input Image -in image Mandatory
This will take an input image to be transformed image. For FFT inverse transform, it expects a complex image as two-band image in which the first band represents the real part and second band represents the imaginary part.

Output Image -out image [dtype] Mandatory
This parameter holds the output file name to which transformed image will be written. This has a slightly different behaviour depending on transform type. For Wavelet, output is a single band image for both forward and inverse transform. For FFT forward transform, output is two band image where first band represents real part and second band represents imaginary part of a complex image.

Mode -mode [fft|wavelet] Default value: wavelet
This parameter allows one to select between fft(fourier) and wavelet

  • FFT transform
    FFT transform

  • Wavelet
    Wavelet transform

FFT transform options

Shift fft transform -mode.fft.shift bool Default value: false
Shift transform of fft filter

Wavelet options

Select wavelet form -mode.wavelet.form [haar|db4|db6|db8|db12|db20|sb24|sb44|sym8] Default value: haar

  • HAAR

  • DAUBECHIES4

  • DAUBECHIES6

  • DAUBECHIES8

  • DAUBECHIES12

  • DAUBECHIES20

  • SPLINE_BIORTHOGONAL_2_4

  • SPLINE_BIORTHOGONAL_4_4

  • SYMLET8

Number of decomposition levels -mode.wavelet.nlevels int Default value: 2
Number of decomposition levels


Direction -direction [forward|inverse] Default value: forward

  • Forward

  • Inverse

Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).

Examples

From the command-line:

otbcli_DomainTransform -in input.tif -mode.wavelet.form haar -out output_wavelet_haar.tif

From Python:

import otbApplication

app = otbApplication.Registry.CreateApplication("DomainTransform")

app.SetParameterString("in", "input.tif")
app.SetParameterString("mode.wavelet.form","haar")
app.SetParameterString("out", "output_wavelet_haar.tif")

app.ExecuteAndWriteOutput()

Limitations

This application is not streamed, check your system resources when processing large images

See also

otbWaveletImageFilter, otbWaveletInverseImageFilter, otbWaveletTransform