Interferograms generated using HyP3-Burst (ISCE-based) have problem with correct_unwrap_error

[HN-Jiang]

Hi, I generated several interferograms using the HyP3-Burst workflow, and they do include conncomp.tif files. However, when I attempted to use the bridge method in correct_unwrap_error, I encountered the following error:

******************** step - correct_unwrap_error ********************
Input data seems to be geocoded. Lookup file not needed.

unwrap_error_bridging.py /misc/zs4/Jianan/landslide/HYP3/Mintpy_Smallarea/inputs/ifgramStack.h5 --template /misc/zs4/Jianan/landslide/HYP3/Mintpy_Smallarea/smallbaselineApp.cfg --update
read options from template file: smallbaselineApp.cfg

update mode: ON

1. output dataset: unwrapPhase_bridging NOT found.
   run or skip: run.

---

correct unwrapping error in /misc/zs4/Jianan/landslide/HYP3/Mintpy_Smallarea/inputs/ifgramStack.h5 with bridging ...
open /misc/zs4/Jianan/landslide/HYP3/Mintpy_Smallarea/inputs/ifgramStack.h5 with r+ mode
input dataset: unwrapPhase
output dataset: unwrapPhase_bridging
create /unwrapPhase_bridging of np.float32 in size of (1878, 346, 751)
[> ]Traceback (most recent call last):
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/bin/smallbaselineApp.py", line 10, in
sys.exit(main())
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/cli/smallbaselineApp.py", line 209, in main
run_smallbaselineApp(inps)
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/smallbaselineApp.py", line 1155, in run_smallbaselineApp
app.run(steps=inps.runSteps)
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/smallbaselineApp.py", line 920, in run
self.run_unwrap_error_correction(sname)
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/smallbaselineApp.py", line 351, in run_unwrap_error_correction
mintpy.cli.unwrap_error_bridging.main(iargs_bridge)
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/cli/unwrap_error_bridging.py", line 137, in main
run_unwrap_error_bridging(
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/unwrap_error_bridging.py", line 155, in run_unwrap_error_bridging
cc_obj.label(min_area=cc_min_area)
File "/misc/radarsoft/ubuntu20.04/mamba/envs/mintpy-1.6.1/lib/python3.8/site-packages/mintpy/objects/conncomp.py", line 175, in label
raise ValueError('input reference point is NOT included in the connectComponent.')
ValueError: input reference point is NOT included in the connectComponent.

I am trying to find the cause of the error and discovered that maskConnComp.png is empty (blank), even though the generated connectComponent.png file is not empty. What could be the reason for this?

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[Arctic-Ambrun]

Where is this place? It's obvious that the coherence of this place is very poor, so you can't use the connectcomponent file to correct it. Be cautious when considering cc_mask in long time series, because if the cc_mask is discontinuous even once, it will be masked. Do you have river segmentation in this area, does it have to be corrected?

[HN-Jiang]

Where is this place? It's obvious that the coherence of this place is very poor, so you can't use the connectcomponent file to correct it. Be cautious when considering cc_mask in long time series, because if the cc_mask is discontinuous even once, it will be masked. Do you have river segmentation in this area, does it have to be corrected?

Hi, thank you, I understand now. Yes it's a mountain area and have bad coherence but no river segmentation.