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AlexeyPechnikov / pygmtsar

PyGMTSAR (Python InSAR): Powerful and Accessible Satellite Interferometry
http://insar.dev/
BSD 3-Clause "New" or "Revised" License
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[Help]: Border noise removal #137

Open SteffanDavies opened 3 months ago

SteffanDavies commented 3 months ago

Hello Alexey.

Border noise appears as highly coherent area This may affect trend removal due to coherence weighting?

image

Do you usually have a method for removing this automatically or do you cut the region out?

SteffanDavies commented 3 months ago

It also appears as highly stable in psfunction: image

AlexeyPechnikov commented 3 months ago

Hi, yes, it can affect Gaussian filtering around the border plus unwrapping and trend removal globally. In this case of strong border effects we need to remove the border pixels.

SteffanDavies commented 3 months ago

Hi, yes, it can affect Gaussian filtering around the border plus unwrapping and trend removal globally. In this case of strong border effects we need to remove the border pixels.

Do you cut it manually by guessing the limit or do you use a tool?

AlexeyPechnikov commented 3 months ago

It can be done as manually as using topological operations from 'utils' module.