GNU Astronomy Utilities - Bugs: bug #60644, Brightness error over-estimated in...
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bug #60644: Brightness error over-estimated in scaled noise (STD less than one)
Submitter: | Mohammad Akhlaghi <makhlaghi> | ||
Submitted: | Thu 20 May 2021 01:03:57 AM UTC | ||
Category: | MakeCatalog | Severity: | 3 - Normal |
Item Group: | Output not reasonable | Status: | Fixed |
Privacy: | Public | Assigned to: | makhlaghi |
Open/Closed: | Closed |
Thu 20 May 2021 01:16:28 AM UTC, comment #1: |
Mohammad Akhlaghi <makhlaghi> |
Thu 20 May 2021 01:03:57 AM UTC, original submission:
As explained Section 3.3 (S/N Equation Modiļ¬cations) of the NoiseChisel paper, when the image noise has a value that is less than 1, it means that the data are not in units of counts (they are often scaled to other units, like electrons/sec). However, even though it is scaled (multiplied by a factor) from the original counts, the original noise was Poisson noise, it just needs to be scaled back.
|
Mohammad Akhlaghi <makhlaghi> |
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Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2021-05-20 | makhlaghi | Status | In Progress | Fixed | |
Open/Closed | Open | Closed |
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Corresponding source code
This bug is fixed in Commit 036ada1b9bce.