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  1. Data Management
  2. DM-3201

Interpolation allows non-positive variance

    Details

    • Type: Bug
    • Status: To Do
    • Resolution: Unresolved
    • Fix Version/s: None
    • Component/s: meas_algorithms
    • Labels:
      None
    • Templates:
    • Team:
      Data Release Production

      Description

      The interpolateOverDefects function allows the variance to be non-positive in two ways:

      • The interpolation is not constrained to be positive.
      • The fallbackValue used for the variance is identical to that for the image, and may be non-positive.

      If the variance can be interpolated to zero, a significant area (e.g., pixels on a coadd that have no corresponding inputs) may be detected as a source, leading to excessive memory usage when we produce heavy footprints.

      This is a transfer of HSC-1186 (unresolved at time of writing).

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                • Assignee:
                  Unassigned
                  Reporter:
                  swinbank John Swinbank
                  Watchers:
                  John Swinbank
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                  Dates

                  • Created:
                    Updated:

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