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Add unit tests for SkyCorrectionTask
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# This file is part of pipe_tasks. | ||
# | ||
# Developed for the LSST Data Management System. | ||
# This product includes software developed by the LSST Project | ||
# (https://www.lsst.org). | ||
# See the COPYRIGHT file at the top-level directory of this distribution | ||
# for details of code ownership. | ||
# | ||
# This program is free software: you can redistribute it and/or modify | ||
# it under the terms of the GNU General Public License as published by | ||
# the Free Software Foundation, either version 3 of the License, or | ||
# (at your option) any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
# GNU General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU General Public License | ||
# along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
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import os | ||
import unittest | ||
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import lsst.utils.tests | ||
import numpy as np | ||
from lsst.afw.image import ExposureF | ||
from lsst.afw.math import BackgroundList, BackgroundMI | ||
from lsst.obs.subaru import HyperSuprimeCam | ||
from lsst.pipe.tasks.background import SkyMeasurementConfig, SkyMeasurementTask | ||
Check failure on line 30 in tests/test_skyCorrection.py
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from lsst.pipe.tasks.skyCorrection import SkyCorrectionConfig, SkyCorrectionTask | ||
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class SkyCorrectionTestCase(lsst.utils.tests.TestCase): | ||
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def setUp(self): | ||
hsc = HyperSuprimeCam() | ||
self.camera = hsc.getCamera() | ||
bbox = self.camera[0].getBBox() | ||
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self.skyCorrectionConfig = SkyCorrectionConfig() | ||
self.skyCorrectionConfig.bgModel1.xSize = 8192 * 0.015 | ||
self.skyCorrectionConfig.bgModel1.ySize = 8192 * 0.015 | ||
self.skyCorrectionConfig.bgModel1.pixelSize = 0.015 | ||
self.skyCorrectionConfig.bgModel2.xSize = 256 * 0.015 | ||
self.skyCorrectionConfig.bgModel2.ySize = 256 * 0.015 | ||
self.skyCorrectionConfig.bgModel2.pixelSize = 0.015 | ||
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def _createGaussian(flux, fwhm, size): | ||
"""Create a 2D Gaussian image. | ||
Parameters | ||
---------- | ||
flux : `float` | ||
Total flux of the Gaussian. | ||
fwhm : `float` | ||
Full width at half maximum of the Gaussian. | ||
size : `int` | ||
Size of the square image in pixels. | ||
""" | ||
sigma = fwhm / 2.355 | ||
x0, y0 = size // 2, size // 2 # Center of the Gaussian | ||
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# Create a 2D grid of (x, y) coordinates | ||
y, x = np.mgrid[0:size, 0:size] | ||
gaussian = np.exp(-((x - x0) ** 2 + (y - y0) ** 2) / (2 * sigma**2)) | ||
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# Normalize to get the total flux of 100 | ||
gaussian *= flux / gaussian.sum() | ||
return gaussian | ||
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# Generate calexp/calexpBackground/sky for the central 6 HSC detectors | ||
self.calExps = [] | ||
self.calBkgs = [] | ||
self.skyFrames = [] | ||
for detector in [41, 42, 49, 50, 57, 58]: | ||
rng = np.random.default_rng(detector) | ||
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# Science image | ||
calexp = ExposureF(bbox) | ||
calexp.setDetector(self.camera[detector]) | ||
# Add a sky frame signature to a subregion of the image | ||
calexp.image.array[:, (5 * 32) : (10 * 32)] += 5 | ||
calexp.image.array[(15 * 32) : (20 * 32)] += 10 | ||
# Add random noise | ||
calexp.image.array += 100 * rng.standard_normal((bbox.getDimensions().y, bbox.getDimensions().x)) | ||
# Add some fake Gaussian sources to the image | ||
gaussian_size = 100 | ||
for i in range(10): | ||
x = round(rng.uniform(gaussian_size // 2, bbox.getDimensions().x - gaussian_size // 2)) | ||
y = round(rng.uniform(gaussian_size // 2, bbox.getDimensions().y - gaussian_size // 2)) | ||
calexp.image.array[ | ||
y - gaussian_size // 2 : y + gaussian_size // 2, | ||
x - gaussian_size // 2 : x + gaussian_size // 2, | ||
] += _createGaussian(1e6, 10, gaussian_size) | ||
self.calExps.append(calexp) | ||
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# Background image | ||
backgroundImage = ExposureF(bbox) | ||
backgroundImage.setDetector(self.camera[detector]) | ||
backgroundImage.image.array += 3000 | ||
background = BackgroundMI(bbox, backgroundImage.getMaskedImage()) | ||
calexpBackground = lsst.afw.math.BackgroundList( | ||
( | ||
background, | ||
lsst.afw.math.Interpolate.AKIMA_SPLINE, | ||
lsst.afw.math.UndersampleStyle.REDUCE_INTERP_ORDER, | ||
lsst.afw.math.ApproximateControl.CHEBYSHEV, | ||
6, | ||
6, | ||
1, | ||
) | ||
) | ||
self.calBkgs.append(calexpBackground) | ||
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# Sky frame | ||
sky = ExposureF(64, 131) | ||
sky.setDetector(self.camera[detector]) | ||
header = sky.getMetadata() | ||
header.set("BOX.MINX", bbox.getMinX()) | ||
header.set("BOX.MINY", bbox.getMinY()) | ||
header.set("BOX.MAXX", bbox.getMaxX()) | ||
header.set("BOX.MAXY", bbox.getMaxY()) | ||
header.set("ALGORITHM", "NATURAL_SPLINE") | ||
sky.image.array[:, 5:10] += 5 | ||
sky.image.array[15:20, :] += 10 | ||
sky.maskedImage.set(0.0, 0x0, 1.0) | ||
self.skyFrames.append(sky) | ||
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def tearDown(self): | ||
del self.camera | ||
del self.calExps | ||
del self.calBkgs | ||
del self.skyFrames | ||
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def testSkyCorrection(self): | ||
"""TEMP.""" | ||
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# breakpoint() | ||
skyCorrectionTask = SkyCorrectionTask(config=self.skyCorrectionConfig) | ||
results = skyCorrectionTask.run(self.calExps, self.calBkgs, self.skyFrames, self.camera) | ||
breakpoint() | ||
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class MemoryTester(lsst.utils.tests.MemoryTestCase): | ||
pass | ||
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def setup_module(module): | ||
lsst.utils.tests.init() | ||
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if __name__ == "__main__": | ||
lsst.utils.tests.init() | ||
unittest.main() |