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LSST Data Management Base Package
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Classes | Functions
lsst.meas.algorithms.detection Namespace Reference

Classes

class  SourceDetectionConfig
 
class  SourceDetectionTask
 

Functions

 addExposures (exposureList)
 

Function Documentation

◆ addExposures()

lsst.meas.algorithms.detection.addExposures ( exposureList)
Add a set of exposures together.

Parameters
----------
exposureList : `list` of `lsst.afw.image.Exposure`
    Sequence of exposures to add.

Returns
-------
addedExposure : `lsst.afw.image.Exposure`
    An exposure of the same size as each exposure in ``exposureList``,
    with the metadata from ``exposureList[0]`` and a masked image equal
    to the sum of all the exposure's masked images.

Definition at line 1019 of file detection.py.

1019def addExposures(exposureList):
1020 """Add a set of exposures together.
1021
1022 Parameters
1023 ----------
1024 exposureList : `list` of `lsst.afw.image.Exposure`
1025 Sequence of exposures to add.
1026
1027 Returns
1028 -------
1029 addedExposure : `lsst.afw.image.Exposure`
1030 An exposure of the same size as each exposure in ``exposureList``,
1031 with the metadata from ``exposureList[0]`` and a masked image equal
1032 to the sum of all the exposure's masked images.
1033 """
1034 exposure0 = exposureList[0]
1035 image0 = exposure0.getMaskedImage()
1036
1037 addedImage = image0.Factory(image0, True)
1038 addedImage.setXY0(image0.getXY0())
1039
1040 for exposure in exposureList[1:]:
1041 image = exposure.getMaskedImage()
1042 addedImage += image
1043
1044 addedExposure = exposure0.Factory(addedImage, exposure0.getWcs())
1045 return addedExposure