def dark(self, exposure, dark):
"""Dark subtraction
@param exposure Exposure to process
@param dark Dark frame to apply
"""
assert exposure, "No exposure provided"
assert dark, "No dark provided"
dark = self._checkDimensions("dark", exposure, dark)
expTime = float(exposure.getCalib().getExptime())
darkTime = float(dark.getCalib().getExptime())
self.log.log(self.log.INFO, "Removing dark (%f sec vs %f sec)" % (expTime, darkTime))
ipIsr.darkCorrection(exposure, dark, expTime, darkTime)
return
def process(self, clipboard):
"""
"""
self.log.log(Log.INFO, "Doing dark subtraction.")
#grab exposure and dark from clipboard
darkexposure = clipboard.get(self.policy.getString("inputKeys.darkexposure"))
exposure = clipboard.get(self.policy.getString("inputKeys.exposure"))
darkscaling = darkexposure.getCalib().getExptime()
expscaling = exposure.getCalib().getExptime()
ipIsr.darkCorrection(exposure, darkexposure, float(expscaling),
float(darkscaling))
#output products
clipboard.put(self.policy.get("outputKeys.darkSubtractedExposure"), exposure)
def doDark(self, scaling):
maskedImage = afwImage.MaskedImageF(lsst.geom.Box2I(self.pmin, self.pmax))
maskedImage.getImage().set(10)
dark = afwImage.MaskedImageF(lsst.geom.Box2I(self.pmin, self.pmax))
dark.getImage().set(1)
darkexposure = afwImage.ExposureF(dark, None)
dmetadata = darkexposure.getMetadata()
dmetadata.setString(self.filenameKeyword, 'Unittest Dark')
ipIsr.darkCorrection(maskedImage, darkexposure.getMaskedImage(), 1., scaling)
height = maskedImage.getHeight()
width = maskedImage.getWidth()
for j in range(height):
for i in range(width):
self.assertAlmostEqual(maskedImage.image[i, j, afwImage.LOCAL], 10 - 1./scaling, 5)
def doDark(self, scaling):
maskedImage = afwImage.MaskedImageF(lsst.geom.Box2I(self.pmin, self.pmax))
maskedImage.getImage().set(10)
dark = afwImage.MaskedImageF(lsst.geom.Box2I(self.pmin, self.pmax))
dark.getImage().set(1)
darkexposure = afwImage.ExposureF(dark, None)
dmetadata = darkexposure.getMetadata()
dmetadata.setString(self.filenameKeyword, 'Unittest Dark')
ipIsr.darkCorrection(maskedImage, darkexposure.getMaskedImage(), 1., scaling)
height = maskedImage.getHeight()
width = maskedImage.getWidth()
for j in range(height):
for i in range(width):
self.assertAlmostEqual(maskedImage.image[i, j, afwImage.LOCAL], 10 - 1./scaling, 5)
def process(self, clipboard):
"""
"""
self.log.log(Log.INFO, "Doing dark subtraction.")
#grab exposure and dark from clipboard
darkexposure = clipboard.get(
self.policy.getString("inputKeys.darkexposure"))
exposure = clipboard.get(self.policy.getString("inputKeys.exposure"))
darkscaling = darkexposure.getCalib().getExptime()
expscaling = exposure.getCalib().getExptime()
ipIsr.darkCorrection(exposure, darkexposure, float(expscaling),
float(darkscaling))
#output products
clipboard.put(self.policy.get("outputKeys.darkSubtractedExposure"),
exposure)
def test_darkCorrection(self):
"""Expect round-trip application to be equal.
Expect RuntimeError if sizes are different.
"""
darkExp = isrMock.DarkMock().run()
darkMi = darkExp.getMaskedImage()
mi = self.mi.clone()
# The `invert` parameter controls the direction of the
# application. This will apply, and un-apply the dark.
ipIsr.darkCorrection(self.mi, darkMi, 1.0, 1.0, trimToFit=True)
ipIsr.darkCorrection(self.mi, darkMi, 1.0, 1.0, trimToFit=True, invert=True)
self.assertMaskedImagesAlmostEqual(self.mi, mi, atol=1e-3)
darkMi = darkMi[1:-1, 1:-1, afwImage.LOCAL]
with self.assertRaises(RuntimeError):
ipIsr.darkCorrection(self.mi, darkMi, 1.0, 1.0, trimToFit=False)
def test_darkCorrection(self):
"""Expect round-trip application to be equal.
Expect RuntimeError if sizes are different.
"""
darkExp = isrMock.DarkMock().run()
darkMi = darkExp.getMaskedImage()
mi = self.mi.clone()
# The `invert` parameter controls the direction of the
# application. This will apply, and un-apply the dark.
ipIsr.darkCorrection(self.mi, darkMi, 1.0, 1.0, trimToFit=True)
ipIsr.darkCorrection(self.mi,
darkMi,
1.0,
1.0,
trimToFit=True,
invert=True)
self.assertMaskedImagesAlmostEqual(self.mi, mi, atol=1e-3)
darkMi = darkMi[1:-1, 1:-1, afwImage.LOCAL]
with self.assertRaises(RuntimeError):
ipIsr.darkCorrection(self.mi, darkMi, 1.0, 1.0, trimToFit=False)