GNU Astronomy Utilities - Bugs: bug #53825, NoiseChisel not accounting for...
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bug #53825: NoiseChisel not accounting for fully zero-valued tiles
Submitter: | Mohammad Akhlaghi <makhlaghi> | ||
Submitted: | Thu 03 May 2018 06:07:06 PM UTC | ||
Category: | NoiseChisel | Severity: | 3 - Normal |
Item Group: | Crash | Status: | Fixed |
Privacy: | Public | Assigned to: | makhlaghi |
Open/Closed: | Closed |
Thu 03 May 2018 06:28:17 PM UTC, comment #1: |
Mohammad Akhlaghi <makhlaghi> |
Thu 03 May 2018 06:07:06 PM UTC, original submission:
It might happen that the input dataset has zero values for regions with no data: essentially using zero as a mask value. In other detection methods (that have above-Sky thresholds) this isn't an issue. But NoiseChisel's threshold is below the Sky value, so the zero valued pixels will actually be considered as detections. We therefore encourge users to set zero valued pixels to NaN/blank.
|
Mohammad Akhlaghi <makhlaghi> |
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Depends on the following items: None found
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Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2018-05-03 | makhlaghi | Status | In Progress | Fixed | |
Open/Closed | Open | Closed |
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Corresponding source code
This bug has been fixed and pushed to the main repo.
This bug was found thanks to a dataset provided by Brandon Kelly.