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import unittest 

import numpy as num 

 

 

import lsst.utils.tests 

import lsst.afw.geom as afwGeom 

import lsst.afw.image as afwImage 

import lsst.afw.math as afwMath 

import lsst.ip.diffim as ipDiffim 

import lsst.log.utils as logUtils 

import lsst.pex.config as pexConfig 

 

# Increase the number for more verbose messages; decrease for fewer messages 

logUtils.traceSetAt("ip.diffim", 4) 

 

 

class DiffimTestCases(unittest.TestCase): 

 

def setUp(self): 

self.config = ipDiffim.ImagePsfMatchTask.ConfigClass() 

self.config.kernel.name = "AL" 

self.subconfig = self.config.kernel.active 

 

self.policy = pexConfig.makePolicy(self.subconfig) 

self.kList = ipDiffim.makeKernelBasisList(self.subconfig) 

 

self.ksize = self.policy.get('kernelSize') 

 

def makeSpatialKernel(self, order): 

basicGaussian1 = afwMath.GaussianFunction2D(2., 2., 0.) 

basicKernel1 = afwMath.AnalyticKernel(self.ksize, self.ksize, basicGaussian1) 

 

basicGaussian2 = afwMath.GaussianFunction2D(5., 3., 0.5 * num.pi) 

basicKernel2 = afwMath.AnalyticKernel(self.ksize, self.ksize, basicGaussian2) 

 

basisList = [] 

basisList.append(basicKernel1) 

basisList.append(basicKernel2) 

basisList = ipDiffim.renormalizeKernelList(basisList) 

 

spatialKernelFunction = afwMath.PolynomialFunction2D(order) 

spatialKernel = afwMath.LinearCombinationKernel(basisList, spatialKernelFunction) 

kCoeffs = [[0.0 for x in range(1, spatialKernelFunction.getNParameters()+1)], 

[0.01 * x for x in range(1, spatialKernelFunction.getNParameters()+1)]] 

kCoeffs[0][0] = 1.0 # it does not vary spatially; constant across image 

spatialKernel.setSpatialParameters(kCoeffs) 

return spatialKernel 

 

def tearDown(self): 

del self.policy 

del self.kList 

 

def testGood(self): 

ti = afwImage.MaskedImageF(afwGeom.Extent2I(100, 100)) 

ti.getVariance().set(0.1) 

ti[50, 50, afwImage.LOCAL] = (1., 0x0, 1.) 

sKernel = self.makeSpatialKernel(2) 

si = afwImage.MaskedImageF(ti.getDimensions()) 

afwMath.convolve(si, ti, sKernel, True) 

 

bbox = afwGeom.Box2I(afwGeom.Point2I(25, 25), 

afwGeom.Point2I(75, 75)) 

si = afwImage.MaskedImageF(si, bbox, origin=afwImage.LOCAL) 

ti = afwImage.MaskedImageF(ti, bbox, origin=afwImage.LOCAL) 

kc = ipDiffim.KernelCandidateF(50., 50., ti, si, self.policy) 

 

sBg = afwMath.PolynomialFunction2D(1) 

bgCoeffs = [0., 0., 0.] 

sBg.setParameters(bgCoeffs) 

 

# must be initialized 

bskv = ipDiffim.BuildSingleKernelVisitorF(self.kList, self.policy) 

bskv.processCandidate(kc) 

self.assertEqual(kc.isInitialized(), True) 

 

askv = ipDiffim.AssessSpatialKernelVisitorF(sKernel, sBg, self.policy) 

askv.processCandidate(kc) 

 

self.assertEqual(askv.getNProcessed(), 1) 

self.assertEqual(askv.getNRejected(), 0) 

self.assertEqual(kc.getStatus(), afwMath.SpatialCellCandidate.GOOD) 

 

def testBad(self): 

ti = afwImage.MaskedImageF(afwGeom.Extent2I(100, 100)) 

ti.getVariance().set(0.1) 

ti[50, 50, afwImage.LOCAL] = (1., 0x0, 1.) 

sKernel = self.makeSpatialKernel(2) 

si = afwImage.MaskedImageF(ti.getDimensions()) 

afwMath.convolve(si, ti, sKernel, True) 

 

bbox = afwGeom.Box2I(afwGeom.Point2I(25, 25), 

afwGeom.Point2I(75, 75)) 

si = afwImage.MaskedImageF(si, bbox, origin=afwImage.LOCAL) 

ti = afwImage.MaskedImageF(ti, bbox, origin=afwImage.LOCAL) 

kc = ipDiffim.KernelCandidateF(50., 50., ti, si, self.policy) 

 

badGaussian = afwMath.GaussianFunction2D(1., 1., 0.) 

badKernel = afwMath.AnalyticKernel(self.ksize, self.ksize, badGaussian) 

basisList = [] 

basisList.append(badKernel) 

badSpatialKernelFunction = afwMath.PolynomialFunction2D(0) 

badSpatialKernel = afwMath.LinearCombinationKernel(basisList, badSpatialKernelFunction) 

badSpatialKernel.setSpatialParameters([[1, ]]) 

 

sBg = afwMath.PolynomialFunction2D(1) 

bgCoeffs = [10., 10., 10.] 

sBg.setParameters(bgCoeffs) 

 

# must be initialized 

bskv = ipDiffim.BuildSingleKernelVisitorF(self.kList, self.policy) 

bskv.processCandidate(kc) 

self.assertEqual(kc.isInitialized(), True) 

 

askv = ipDiffim.AssessSpatialKernelVisitorF(badSpatialKernel, sBg, self.policy) 

askv.processCandidate(kc) 

 

self.assertEqual(askv.getNProcessed(), 1) 

self.assertEqual(askv.getNRejected(), 1) 

self.assertEqual(kc.getStatus(), afwMath.SpatialCellCandidate.BAD) 

 

 

##### 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

132 ↛ 133line 132 didn't jump to line 133, because the condition on line 132 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()