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  1. Data Management
  2. DM-9553

Investigate the best algorithm to compute derivatives for the Brighter-Fatter correction

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    Details

    • Type: Story
    • Status: Done
    • Resolution: Done
    • Fix Version/s: None
    • Component/s: ip_isr
    • Labels:
      None
    • Story Points:
      1
    • Epic Link:
    • Sprint:
      DRP S17-5
    • Team:
      Data Release Production

      Description

      As noted in DM-9535, the method used to compute second derivatives in the Brighter-Fatter correction implementation can lead to significant (up to 1%, which is particularly significant for weak lensing considerations) differences in the trace radii of sources, with the differences becoming larger with brighter magnitudes (see figures in DM-9535). This ticket is to investigate the optimal algorithm to use for the Brighter-Fatter correction.

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          Story - Created by Jira Software - do not edit or delete. Issue type for a user story. DM-9870 Release hscPipe 5.0-beta1

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            8 older comments
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            swinbank John Swinbank added a comment -

            Bob Armstrong — Lauren MacArthur suggests that we assign this ticket to her, since she already has a fix on that branch, and have you act as reviewer. If you object, do shout!

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            swinbank John Swinbank added a comment - Bob Armstrong — Lauren MacArthur suggests that we assign this ticket to her, since she already has a fix on that branch, and have you act as reviewer. If you object, do shout!
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            lauren Lauren MacArthur added a comment -

            Bob Armstrong, do you have time to review this?

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            lauren Lauren MacArthur added a comment - Bob Armstrong , do you have time to review this?
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            rearmstr Bob Armstrong added a comment -

            Yep, I'll take a look.

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            rearmstr Bob Armstrong added a comment - Yep, I'll take a look.
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            rearmstr Bob Armstrong added a comment -

            Looks good.

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            rearmstr Bob Armstrong added a comment - Looks good.
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            lauren Lauren MacArthur added a comment -

            Thanks Bob Armstrong. I ran every combination of Jenkins and it passed all it currently can, i.e. through ci_hsc on all py2 os' (centos6&7 and OS X), but only lsst_distrib on py3 (since ci_hsc hasn't been py3'd yet).

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            lauren Lauren MacArthur added a comment - Thanks Bob Armstrong . I ran every combination of Jenkins and it passed all it currently can, i.e. through ci_hsc on all py2 os' (centos6&7 and OS X), but only lsst_distrib on py3 (since ci_hsc hasn't been py3'd yet).

              People

              Assignee:
              rearmstr Bob Armstrong
              Reporter:
              lauren Lauren MacArthur
              Reviewers:
              Bob Armstrong
              Watchers:
              Bob Armstrong, John Swinbank, Lauren MacArthur
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:

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