def maskAndInterpDefect(self, ccdExposure, defectBaseList):
"""Mask defects and edges, interpolate over defects in place
Mask defect pixels using mask plane BAD and interpolate over them.
Mask the potentially problematic glowing edges as SUSPECT.
Parameters
----------
ccdExposure : `lsst.afw.image.Exposure`
exposure to process
defectBaseList : `list`
a list of defects to mask and interpolate
Returns
-------
ccdExposure : `lsst.afw.image.Exposure`
exposure corrected in place
"""
IsrTask.maskAndInterpDefect(self, ccdExposure, defectBaseList)
maskedImage = ccdExposure.getMaskedImage()
goodBBox = maskedImage.getBBox()
# This makes a bbox numEdgeSuspect pixels smaller than the image on each side
goodBBox.grow(-self.config.numEdgeSuspect)
# Mask pixels outside goodBBox as SUSPECT
SourceDetectionTask.setEdgeBits(
maskedImage, goodBBox,
maskedImage.getMask().getPlaneBitMask("SUSPECT"))
def flatCorrection(self, exposure, flatExposure):
"""Apply flat correction in place
DECam flat products have been trimmed and are smaller than
the raw exposure. The size of edge trim is computed based
on the dimensions of the input data. Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.
@param[in,out] exposure: exposure to process
@param[in] flatExposure: flatfield exposure
"""
nEdge = _computeEdgeSize(exposure, flatExposure)
if nEdge > 0:
rawMaskedImage = exposure.getMaskedImage()[nEdge:-nEdge, nEdge:-nEdge]
else:
rawMaskedImage = exposure.getMaskedImage()
flatCorrection(
rawMaskedImage, flatExposure.getMaskedImage(), self.config.flatScalingType, self.config.flatUserScale
)
# Mask the unprocessed edge pixels as EDGE
SourceDetectionTask.setEdgeBits(
exposure.getMaskedImage(),
rawMaskedImage.getBBox(),
exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE"),
)
def maskAndInterpDefect(self, ccdExposure, defectBaseList):
"""Mask defects and edges, interpolate over defects in place
Mask defect pixels using mask plane BAD and interpolate over them.
Mask the potentially problematic glowing edges as SUSPECT.
@param[in,out] ccdExposure: exposure to process
@param[in] defectBaseList: a list of defects to mask and interpolate
"""
IsrTask.maskAndInterpDefect(self, ccdExposure, defectBaseList)
maskedImage = ccdExposure.getMaskedImage()
goodBBox = maskedImage.getBBox()
# This makes a bbox numEdgeSuspect pixels smaller than the image on each side
goodBBox.grow(-self.config.numEdgeSuspect)
# Mask pixels outside goodBBox as SUSPECT
SourceDetectionTask.setEdgeBits(maskedImage, goodBBox, maskedImage.getMask().getPlaneBitMask("SUSPECT"))
def trimToMatchCalibBBox(rawMaskedImage, calibMaskedImage):
"""Compute number of edge trim pixels to match the calibration data.
Use the dimension difference between the raw exposure and the
calibration exposure to compute the edge trim pixels. This trim
is applied symmetrically, with the same number of pixels masked on
each side.
Parameters
----------
rawMaskedImage : `lsst.afw.image.MaskedImage`
Image to trim.
calibMaskedImage : `lsst.afw.image.MaskedImage`
Calibration image to draw new bounding box from.
Returns
-------
replacementMaskedImage : `lsst.afw.image.MaskedImage`
``rawMaskedImage`` trimmed to the appropriate size
Raises
------
RuntimeError
Rasied if ``rawMaskedImage`` cannot be symmetrically trimmed to
match ``calibMaskedImage``.
"""
nx, ny = rawMaskedImage.getBBox().getDimensions(
) - calibMaskedImage.getBBox().getDimensions()
if nx != ny:
raise RuntimeError(
"Raw and calib maskedImages are trimmed differently in X and Y.")
if nx % 2 != 0:
raise RuntimeError("Calibration maskedImage is trimmed unevenly in X.")
if nx < 0:
raise RuntimeError("Calibration maskedImage is larger than raw data.")
nEdge = nx // 2
if nEdge > 0:
replacementMaskedImage = rawMaskedImage[nEdge:-nEdge, nEdge:-nEdge,
afwImage.LOCAL]
SourceDetectionTask.setEdgeBits(
rawMaskedImage, replacementMaskedImage.getBBox(),
rawMaskedImage.getMask().getPlaneBitMask("EDGE"))
else:
replacementMaskedImage = rawMaskedImage
return replacementMaskedImage
def trimToMatchCalibBBox(rawMaskedImage, calibMaskedImage):
"""Compute number of edge trim pixels to match the calibration data.
Use the dimension difference between the raw exposure and the
calibration exposure to compute the edge trim pixels. This trim
is applied symmetrically, with the same number of pixels masked on
each side.
Parameters
----------
rawMaskedImage : `lsst.afw.image.MaskedImage`
Image to trim.
calibMaskedImage : `lsst.afw.image.MaskedImage`
Calibration image to draw new bounding box from.
Returns
-------
replacementMaskedImage : `lsst.afw.image.MaskedImage`
``rawMaskedImage`` trimmed to the appropriate size
Raises
------
RuntimeError
Rasied if ``rawMaskedImage`` cannot be symmetrically trimmed to
match ``calibMaskedImage``.
"""
nx, ny = rawMaskedImage.getBBox().getDimensions() - calibMaskedImage.getBBox().getDimensions()
if nx != ny:
raise RuntimeError("Raw and calib maskedImages are trimmed differently in X and Y.")
if nx % 2 != 0:
raise RuntimeError("Calibration maskedImage is trimmed unevenly in X.")
if nx < 0:
raise RuntimeError("Calibration maskedImage is larger than raw data.")
nEdge = nx//2
if nEdge > 0:
replacementMaskedImage = rawMaskedImage[nEdge:-nEdge, nEdge:-nEdge, afwImage.LOCAL]
SourceDetectionTask.setEdgeBits(
rawMaskedImage,
replacementMaskedImage.getBBox(),
rawMaskedImage.getMask().getPlaneBitMask("EDGE")
)
else:
replacementMaskedImage = rawMaskedImage
return replacementMaskedImage
def biasCorrection(self, exposure, biasExposure):
"""Apply bias correction in place
DECam bias products have been trimmed and are smaller than
the raw exposure. The size of edge trim is computed based
on the dimensions of the input data. Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.
@param[in,out] exposure: exposure to process
@param[in] biasExposure: bias exposure
"""
nEdge = _computeEdgeSize(exposure, biasExposure)
if nEdge > 0:
rawMaskedImage = exposure.getMaskedImage()[nEdge:-nEdge,
nEdge:-nEdge]
else:
rawMaskedImage = exposure.getMaskedImage()
biasCorrection(rawMaskedImage, biasExposure.getMaskedImage())
# Mask the unprocessed edge pixels as EDGE
SourceDetectionTask.setEdgeBits(
exposure.getMaskedImage(), rawMaskedImage.getBBox(),
exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE"))
def flatCorrection(self, exposure, flatExposure):
"""Apply flat correction in place
DECam flat products have been trimmed and are smaller than
the raw exposure. The size of edge trim is computed based
on the dimensions of the input data. Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.
@param[in,out] exposure: exposure to process
@param[in] flatExposure: flatfield exposure
"""
nEdge = _computeEdgeSize(exposure, flatExposure)
if nEdge > 0:
rawMaskedImage = exposure.getMaskedImage()[nEdge:-nEdge,
nEdge:-nEdge]
else:
rawMaskedImage = exposure.getMaskedImage()
flatCorrection(rawMaskedImage, flatExposure.getMaskedImage(),
self.config.flatScalingType, self.config.flatUserScale)
# Mask the unprocessed edge pixels as EDGE
SourceDetectionTask.setEdgeBits(
exposure.getMaskedImage(), rawMaskedImage.getBBox(),
exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE"))
def biasCorrection(self, exposure, biasExposure):
"""Apply bias correction in place
DECam bias products have been trimmed and are smaller than
the raw exposure. The size of edge trim is computed based
on the dimensions of the input data. Only process the inner
part of the raw exposure, and mask the outer pixels as EDGE.
@param[in,out] exposure: exposure to process
@param[in] biasExposure: bias exposure
"""
nEdge = _computeEdgeSize(exposure, biasExposure)
if nEdge > 0:
rawMaskedImage = exposure.getMaskedImage()[nEdge:-nEdge, nEdge:-nEdge]
else:
rawMaskedImage = exposure.getMaskedImage()
biasCorrection(rawMaskedImage, biasExposure.getMaskedImage())
# Mask the unprocessed edge pixels as EDGE
SourceDetectionTask.setEdgeBits(
exposure.getMaskedImage(),
rawMaskedImage.getBBox(),
exposure.getMaskedImage().getMask().getPlaneBitMask("EDGE"),
)
