NAME
i.wavelet - Decompostion/Recomposition in temporal dimension using wavelets
KEYWORDS
imagery,
wavelet,
fusion
SYNOPSIS
i.wavelet
i.wavelet --help
i.wavelet [-iHD] [input_group_to_decompose=name] [output_lp1_from_decomposition=name] [output_lp2_from_decomposition=name] [output_hp1_from_decomposition=name] [output_hp2_from_decomposition=name] [input_lp2_group_for_recomposition=name] [input_hp1_group_for_recomposition=name] [input_hp2_group_for_recomposition=name] [output_from_recomposition=name] [wavelet_sample_rate=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -i
- Recomposition (Default: Decomposition)
- -H
- Use Haar wavelets
- -D
- Use Daubechies wavelets (specify resolution=4,6,8,10,12,14,16,18,20
- --overwrite
- Allow output files to overwrite existing files
- --help
- Print usage summary
- --verbose
- Verbose module output
- --quiet
- Quiet module output
- --ui
- Force launching GUI dialog
Parameters:
- input_group_to_decompose=name
- Name of input imagery group
- output_lp1_from_decomposition=name
- Name for output raster map
- output_lp2_from_decomposition=name
- Name for output raster map
- output_hp1_from_decomposition=name
- Name for output raster map
- output_hp2_from_decomposition=name
- Name for output raster map
- input_lp2_group_for_recomposition=name
- Name of input imagery group
- input_hp1_group_for_recomposition=name
- Name of input imagery group
- input_hp2_group_for_recomposition=name
- Name of input imagery group
- output_from_recomposition=name
- Name of input raster map
- wavelet_sample_rate=integer
- 4,6,8,10,12,14,16,18,20
i.wavelet Decomposes the time-series with the requested wavelet.
The output will have 4 components, High-Pass Level 1 and 2, Low-Pass
Level 1 and 2. Low Pass Level 1 can be recomposed using HP2 and LP2
using the recomposition mode.
This module is designed to make a temporal fusion from multi-sources.
More wavelet families to be included.
r.hants,
i.lmf
Yann Chemin, International Water Management Institute
SOURCE CODE
Available at:
i.wavelet source code
(history)
Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730
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GRASS Development Team,
GRASS GIS 8.4.1dev Reference Manual