LSSTApplications: lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask Class Reference

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LSSTDataManagementBasePackage

Inheritance diagram for lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask:

Public Member Functions
def	__init__

def	getTemplate

def	fitAstrometry

Public Member Functions inherited from lsst.pipe.tasks.imageDifference.ImageDifferenceTask
def	__init__

def	run

def	fitAstrometry

def	runDebug

def	getTemplate

def	getSchemaCatalogs

Static Public Attributes
	ConfigClass = Winter2013ImageDifferenceConfig

Static Public Attributes inherited from lsst.pipe.tasks.imageDifference.ImageDifferenceTask
	ConfigClass = ImageDifferenceConfig

Static Private Attributes
string	_DefaultName = "winter2013ImageDifference"

Additional Inherited Members
Public Attributes inherited from lsst.pipe.tasks.imageDifference.ImageDifferenceTask
	sourceSelector

	astrometer

	schema

	algMetadata

Detailed Description

Definition at line 770 of file imageDifference.py.

Constructor & Destructor Documentation

def lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.__init__	(	self,
		kwargs
	)

Definition at line 774 of file imageDifference.py.

 
     def __init__(self, **kwargs):
           ImageDifferenceTask.__init__(self, **kwargs)

lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.__init__

def __init__

Definition: imageDifference.py:774

Member Function Documentation

def lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.fitAstrometry	(	self,
		templateSources,
		templateExposure,
		selectSources
	)

Fit the relative astrometry between templateSources and selectSources

Definition at line 800 of file imageDifference.py.

 
     def fitAstrometry(self, templateSources, templateExposure, selectSources):
         """Fit the relative astrometry between templateSources and selectSources"""
         if self.config.winter2013WcsShift > 0.0:
             offset = afwGeom.Extent2D(self.config.winter2013WcsShift,
                                       self.config.winter2013WcsShift)
             cKey = templateSources[0].getTable().getCentroidKey()
             for source in templateSources:
                 centroid = source.get(cKey)
                 source.set(cKey, centroid+offset)
         elif self.config.winter2013WcsRms > 0.0:
             cKey = templateSources[0].getTable().getCentroidKey()
             for source in templateSources:
                 offset = afwGeom.Extent2D(self.config.winter2013WcsRms*numpy.random.normal(),
                                           self.config.winter2013WcsRms*numpy.random.normal())
                 centroid = source.get(cKey)
                 source.set(cKey, centroid+offset)
 
         results = self.register.run(templateSources, templateExposure.getWcs(),
                                     templateExposure.getBBox(), selectSources)
         return results

def lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.getTemplate	(	self,
		exposure,
		sensorRef
	)

Return a template coadd exposure that overlaps the exposure

@param[in] exposure: exposure
@param[in] sensorRef: a Butler data reference that can be used to obtain coadd data

@return coaddExposure: a template coadd exposure assembled out of patches

Definition at line 777 of file imageDifference.py.

 
     def getTemplate(self, exposure, sensorRef):
         """Return a template coadd exposure that overlaps the exposure
 
         @param[in] exposure: exposure
         @param[in] sensorRef: a Butler data reference that can be used to obtain coadd data
 
         @return coaddExposure: a template coadd exposure assembled out of patches
         """
         # Using a deep simulated calexp instead of a coadd
         self.log.warn("USING WINTER2013 : DEEP CALEXP AS TEMPLATE")
         templateId = type(sensorRef.dataId)(sensorRef.dataId)
         templateId["visit"] = self.config.winter2013TemplateId
         template = sensorRef.getButler().get(datasetType="calexp", dataId=templateId)
         if self.config.doAddCalexpBackground:
             templateBg = sensorRef.getButler().get(datasetType="calexpBackground", dataId=templateId)
             mi = template.getMaskedImage()
             mi += templateBg
         if not template.hasPsf():
             raise pipeBase.TaskError("Template has no psf")
         templateSources = sensorRef.getButler().get(datasetType="src", dataId=templateId)
         return template, templateSources
 

lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.getTemplate

def getTemplate

Definition: imageDifference.py:777

Public Member Functions

Static Public Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation