Classes
class	AmplifierIsolator

Functions
	_insertPixelChunk (outView, inView, amplifier)

	assembleAmplifierImage (destImage, rawImage, amplifier)

	assembleAmplifierRawImage (destImage, rawImage, amplifier)

	makeUpdatedDetector (ccd)

Variables
dict	_SliceDict

Function Documentation

◆ _insertPixelChunk()

lsst.afw.cameraGeom._assembleImage._insertPixelChunk	(	outView,
		inView,
		amplifier )

protected

Definition at line 32 of file _assembleImage.py.

def _insertPixelChunk(outView, inView, amplifier):
    # For the sake of simplicity and robustness, this code does not short-circuit the case flipX=flipY=False.
    # However, it would save a bit of time, including the cost of making numpy array views.
    # If short circuiting is wanted, do it here.
 
    xSlice = _SliceDict[amplifier.getRawFlipX()]
    ySlice = _SliceDict[amplifier.getRawFlipY()]
    if hasattr(inView, "image"):
        inArrList = (inView.image.array, inView.mask.array, inView.variance.array)
        outArrList = (outView.image.array, outView.mask.array, outView.variance.array)
    else:
        inArrList = [inView.array]
        outArrList = [outView.array]
 
    for inArr, outArr in zip(inArrList, outArrList):
        # y,x because numpy arrays are transposed w.r.t. afw Images
        outArr[:] = inArr[ySlice, xSlice]
 
 

◆ assembleAmplifierImage()

lsst.afw.cameraGeom._assembleImage.assembleAmplifierImage	(	destImage,
		rawImage,
		amplifier )

Assemble the amplifier region of an image from a raw image.

Parameters
----------
destImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
    Assembled image; the region amplifier.getBBox() is overwritten with
    the assembled amplifier image.
rawImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
    Raw image (same type as destImage).
amplifier : `lsst.afw.cameraGeom.Amplifier`
    Amplifier geometry, with raw amplifier info.

Raises
------
RuntimeError
    Raised if image types do not match or amplifier has no raw amplifier info.

Definition at line 51 of file _assembleImage.py.

def assembleAmplifierImage(destImage, rawImage, amplifier):
    """Assemble the amplifier region of an image from a raw image.
 
    Parameters
    ----------
    destImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
        Assembled image; the region amplifier.getBBox() is overwritten with
        the assembled amplifier image.
    rawImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
        Raw image (same type as destImage).
    amplifier : `lsst.afw.cameraGeom.Amplifier`
        Amplifier geometry, with raw amplifier info.
 
    Raises
    ------
    RuntimeError
        Raised if image types do not match or amplifier has no raw amplifier info.
    """
    if type(destImage.Factory) != type(rawImage.Factory):  # noqa: E721
        raise RuntimeError(f"destImage type = {type(destImage.Factory).__name__} != "
                           f"{type(rawImage.Factory).__name__} = rawImage type")
    inView = rawImage.Factory(rawImage, amplifier.getRawDataBBox())
    outView = destImage.Factory(destImage, amplifier.getBBox())
 
    _insertPixelChunk(outView, inView, amplifier)
 
 

◆ assembleAmplifierRawImage()

lsst.afw.cameraGeom._assembleImage.assembleAmplifierRawImage	(	destImage,
		rawImage,
		amplifier )

Assemble the amplifier region of a raw CCD image.

For most cameras this is a no-op: the raw image already is an assembled
CCD image.
However, it is useful for camera such as LSST for which each amplifier
image is a separate image.

Parameters
----------
destImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
    CCD Image; the region amplifier.getRawAmplifier().getBBox()
    is overwritten with the raw amplifier image.
rawImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
    Raw image (same type as destImage).
amplifier : `lsst.afw.cameraGeom.Amplifier`
    Amplifier geometry with raw amplifier info

Raises
------
RuntimeError
    Raised if image types do not match or amplifier has no raw amplifier info.

Definition at line 78 of file _assembleImage.py.

def assembleAmplifierRawImage(destImage, rawImage, amplifier):
    """Assemble the amplifier region of a raw CCD image.
 
    For most cameras this is a no-op: the raw image already is an assembled
    CCD image.
    However, it is useful for camera such as LSST for which each amplifier
    image is a separate image.
 
    Parameters
    ----------
    destImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
        CCD Image; the region amplifier.getRawAmplifier().getBBox()
        is overwritten with the raw amplifier image.
    rawImage : `lsst.afw.image.Image` or `lsst.afw.image.MaskedImage`
        Raw image (same type as destImage).
    amplifier : `lsst.afw.cameraGeom.Amplifier`
        Amplifier geometry with raw amplifier info
 
    Raises
    ------
    RuntimeError
        Raised if image types do not match or amplifier has no raw amplifier info.
    """
    if type(destImage.Factory) != type(rawImage.Factory):  # noqa: E721
        raise RuntimeError(f"destImage type = {type(destImage.Factory).__name__} != "
                           f"{type(rawImage.Factory).__name__} = rawImage type")
    inBBox = amplifier.getRawBBox()
    inView = rawImage.Factory(rawImage, inBBox)
    outBBox = amplifier.getRawBBox()
    outBBox.shift(amplifier.getRawXYOffset())
    outView = destImage.Factory(destImage, outBBox)
 
    _insertPixelChunk(outView, inView, amplifier)
 
 

◆ makeUpdatedDetector()

lsst.afw.cameraGeom._assembleImage.makeUpdatedDetector ( ccd )

Return a Detector that has had the definitions of amplifier geometry
updated post assembly.

Parameters
----------
ccd : `lsst.afw.image.Detector`
    The detector to copy and update.

Definition at line 113 of file _assembleImage.py.

def makeUpdatedDetector(ccd):
    """Return a Detector that has had the definitions of amplifier geometry
    updated post assembly.
 
    Parameters
    ----------
    ccd : `lsst.afw.image.Detector`
        The detector to copy and update.
    """
    builder = ccd.rebuild()
    for amp in builder.getAmplifiers():
        amp.transform()
    return builder.finish()
 
 

Variable Documentation

◆ _SliceDict

dict lsst.afw.cameraGeom._assembleImage._SliceDict

protected

Initial value:

=  {
    False: slice(None, None, 1),
    True: slice(None, None, -1),
}

Definition at line 26 of file _assembleImage.py.

Classes

Functions