Model Free 3-Component decomposition for dual-co-pol (mf3cd)#

polsartools.mf3cd(infolder, window_size=1, outType='tif', cog_flag=False, cog_overviews=[2, 4, 8, 16], write_flag=True, max_workers=None, block_size=(512, 512), progress_callback=None)[source]

Computes decomposed powers, and a scattering type parameter from the input dual-co-polarization T2 matrix data, and writes the output in various formats (GeoTIFF or binary). The computation is performed in parallel for efficiency.

Example:#

>>> mf3cd("path_to_T2_folder", window_size=5, outType="tif", cog_flag=True)
This will compute decomposed powers from the dual-co-pol T2 matrix in the specified folder,
generating output in Geotiff format with Cloud Optimized GeoTIFF settings enabled.

Parameters:#

infolderstr

Path to the input folder containing T2 matrix data.

window_sizeint, optional

Size of the processing window (default is 1).

outTypestr, optional

Output format of the files; can be “tif” (GeoTIFF) or “bin” (binary) (default is “tif”).

cog_flagbool, optional

If True, outputs Cloud Optimized GeoTIFF (COG) (default is False).

cog_overviewslist of int, optional

List of overview levels to be used for COGs (default is [2, 4, 8, 16]).

write_flagbool, optional

Whether to write the computed output files (default is True).

max_workersint, optional

Number of parallel workers for processing (default is None, which uses one less than the number of available CPU cores).

block_sizetuple of int, optional

Size of each processing block (default is (512, 512)), defining the spatial chunk dimensions used in parallel computation.

Returns:#

None

The function writes the computed decomposed powers to the specified output format.

Output Files:#

  • “Ps_mf3cd.tif” or “Ps_mf3cd.bin”

  • “Pd_mf3cd.tif” or “Pd_mf3cd.bin”

  • “Pv_mf3cd.tif” or “Pv_mf3cd.bin”

  • “Theta_DP_mf3cd.tif” or “Theta_DP_mf3cd.bin”

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