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DM-24708 Quick fix of type mismatch runtime errors in decorrelation afterburner #158

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May 2, 2020
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DM-24708 Quick fix of type mismatch runtime errors in decorrelation afterburner #158

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8 changes: 4 additions & 4 deletions python/lsst/ip/diffim/imageDecorrelation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -244,13 +244,13 @@ def run(self, exposure, templateExposure, subtractedExposure, psfMatchingKernel,
psfNew = measAlg.KernelPsf(psfcK)

correctedExposure = subtractedExposure.clone()
correctedExposure.image.array = diffExpArr
correctedExposure.image.array[...] = diffExpArr # Allow for numpy type casting
# The subtracted exposure variance plane is already correlated, we cannot propagate
# it through another convolution; instead we need to use the uncorrelated originals
# The whitening should scale it to svar + tvar on average
varImg = correctedExposure.variance
varImg.assign(exposure.variance)
varImg += templateExposure.variance
varImg = correctedExposure.variance.array
# Allow for numpy type casting
varImg[...] = exposure.variance.array + templateExposure.variance.array
correctedExposure.setPsf(psfNew)

newVarMean = self.computeVarianceMean(correctedExposure)
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