lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask Class Reference

Image difference Task used in the Winter 2013 data challege. More...

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

Public Member Functions
def	__init__ (self, **kwargs)
def	fitAstrometry (self, templateSources, templateExposure, selectSources)

Static Public Attributes
	ConfigClass = Winter2013ImageDifferenceConfig

Detailed Description

Image difference Task used in the Winter 2013 data challege.

Enables testing the effects of registration shifts and scatter.

For use with winter 2013 simulated images: Use –templateId visit=88868666 for sparse data –templateId visit=22222200 for dense data (g) –templateId visit=11111100 for dense data (i)

Definition at line 1378 of file imageDifference.py.

Constructor & Destructor Documentation

__init__()

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

Definition at line 1390 of file imageDifference.py.

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

Member Function Documentation

fitAstrometry()

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

Fit the relative astrometry between templateSources and selectSources

Definition at line 1393 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 = geom.Extent2D(self.config.winter2013WcsShift,
                                   self.config.winter2013WcsShift)
            cKey = templateSources[0].getTable().getCentroidSlot().getMeasKey()
            for source in templateSources:
                centroid = source.get(cKey)
                source.set(cKey, centroid + offset)
        elif self.config.winter2013WcsRms > 0.0:
            cKey = templateSources[0].getTable().getCentroidSlot().getMeasKey()
            for source in templateSources:
                offset = geom.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

Member Data Documentation

ConfigClass

lsst.pipe.tasks.imageDifference.Winter2013ImageDifferenceTask.ConfigClass = Winter2013ImageDifferenceConfig

static

Definition at line 1387 of file imageDifference.py.

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The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-0.7.0/Linux64/pipe_tasks/21.0.0-172-gfb10e10a+18fedfabac/python/lsst/pipe/tasks/imageDifference.py