Coverage for tests / test_PixelFlags.py: 13%
129 statements
« prev ^ index » next coverage.py v7.13.5, created at 2026-04-30 08:55 +0000
1# This file is part of meas_base.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
22import unittest
24import numpy as np
26import lsst.geom
27import lsst.utils.tests
28import lsst.meas.base.tests
31class PixelFlagsTestCase(lsst.meas.base.tests.AlgorithmTestCase, lsst.utils.tests.TestCase):
33 def setUp(self):
34 self.center = lsst.geom.Point2D(50.1, 49.8)
35 self.bbox = lsst.geom.Box2I(lsst.geom.Point2I(-20, -30),
36 lsst.geom.Extent2I(140, 160))
37 self.dataset = lsst.meas.base.tests.TestDataset(self.bbox)
39 def testNoFlags(self):
40 self.dataset.addSource(100000.0, self.center)
41 task = self.makeSingleFrameMeasurementTask("base_PixelFlags")
42 exposure, catalog = self.dataset.realize(10.0, task.schema, randomSeed=0)
43 task.run(catalog, exposure)
44 record = catalog[0]
45 self.assertFalse(record.get("base_PixelFlags_flag"))
46 self.assertFalse(record.get("base_PixelFlags_flag_edge"))
47 self.assertFalse(record.get("base_PixelFlags_flag_edgeCenter"))
48 self.assertFalse(record.get("base_PixelFlags_flag_edgeCenterAll"))
49 self.assertFalse(record.get("base_PixelFlags_flag_nodata"))
50 self.assertFalse(record.get("base_PixelFlags_flag_nodataCenter"))
51 self.assertFalse(record.get("base_PixelFlags_flag_nodataCenterAll"))
52 self.assertFalse(record.get("base_PixelFlags_flag_interpolated"))
53 self.assertFalse(record.get("base_PixelFlags_flag_interpolatedCenter"))
54 self.assertFalse(record.get("base_PixelFlags_flag_interpolatedCenterAll"))
55 self.assertFalse(record.get("base_PixelFlags_flag_saturated"))
56 self.assertFalse(record.get("base_PixelFlags_flag_saturatedCenter"))
57 self.assertFalse(record.get("base_PixelFlags_flag_saturatedCenterAll"))
58 self.assertFalse(record.get("base_PixelFlags_flag_cr"))
59 self.assertFalse(record.get("base_PixelFlags_flag_crCenter"))
60 self.assertFalse(record.get("base_PixelFlags_flag_crCenterAll"))
61 self.assertFalse(record.get("base_PixelFlags_flag_bad"))
62 self.assertFalse(record.get("base_PixelFlags_flag_badCenter"))
63 self.assertFalse(record.get("base_PixelFlags_flag_badCenterAll"))
65 def testSomeFlags(self):
66 self.dataset.addSource(100000.0, self.center)
67 task = self.makeSingleFrameMeasurementTask("base_PixelFlags")
68 exposure, catalog = self.dataset.realize(10.0, task.schema, randomSeed=0)
69 # one cr pixel outside the center
70 cosmicray = exposure.mask.getPlaneBitMask("CR")
71 x = round(self.center.x)
72 y = round(self.center.y)
73 exposure.mask[x+3, y+4] |= cosmicray
74 # one interpolated pixel near the center
75 interpolated = exposure.mask.getPlaneBitMask("INTRP")
76 exposure.mask[self.center] |= interpolated
77 # all pixels in the center are bad
78 bad = exposure.mask.getPlaneBitMask("BAD")
79 exposure.mask[x-1:x+2, y-1:y+2] |= bad
80 task.run(catalog, exposure)
81 record = catalog[0]
83 self.assertFalse(record.get("base_PixelFlags_flag_edge"))
84 self.assertFalse(record.get("base_PixelFlags_flag_edgeCenter"))
85 self.assertFalse(record.get("base_PixelFlags_flag_edgeCenterAll"))
86 self.assertFalse(record.get("base_PixelFlags_flag_nodata"))
87 self.assertFalse(record.get("base_PixelFlags_flag_nodataCenter"))
88 self.assertFalse(record.get("base_PixelFlags_flag_nodataCenterAll"))
89 self.assertTrue(record.get("base_PixelFlags_flag_cr"))
90 self.assertFalse(record.get("base_PixelFlags_flag_crCenter"))
91 self.assertFalse(record.get("base_PixelFlags_flag_crCenterAll"))
92 self.assertTrue(record.get("base_PixelFlags_flag_interpolated"))
93 self.assertTrue(record.get("base_PixelFlags_flag_interpolatedCenter"))
94 self.assertFalse(record.get("base_PixelFlags_flag_interpolatedCenterAll"))
95 self.assertTrue(record.get("base_PixelFlags_flag_bad"))
96 self.assertTrue(record.get("base_PixelFlags_flag_badCenter"))
97 self.assertTrue(record.get("base_PixelFlags_flag_badCenterAll"))
99 def testOffimageNonfinite(self):
100 """Test that flag_offimage and flag_edge are set correctly for
101 nonfinite sources.
102 """
103 # These three will be explicitly set to have a non-finite centroid; we
104 # cannot add sources off the image in TestDataset.
105 self.dataset.addSource(100000, lsst.geom.Point2D(20, 20))
106 self.dataset.addSource(100000, lsst.geom.Point2D(20, 100))
107 self.dataset.addSource(100000, lsst.geom.Point2D(100, 30))
108 task = self.makeSingleFrameMeasurementTask("base_PixelFlags")
109 exposure, catalog = self.dataset.realize(10.0, task.schema, randomSeed=0)
110 catalog[0]["slot_Centroid_x"] = np.inf
111 catalog[1]["slot_Centroid_x"] = -np.inf
112 catalog[2]["slot_Centroid_y"] = np.nan
113 task.run(catalog, exposure)
114 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_offimage"],
115 np.array([True, True, True]))
116 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edge"],
117 np.array([True, True, True]))
118 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenter"],
119 np.array([True, True, True]))
120 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenterAll"],
121 np.array([True, True, True]))
123 def testOffimage(self):
124 """Test that sources at the boundary of the image get flag_offimage
125 and flag_edge[Center[All]] set appropriately.
126 """
127 # These four will be explicitly set to values at the boundary; we
128 # cannot add sources off the image in TestDataset.
129 self.dataset.addSource(100000, lsst.geom.Point2D(20, 20))
130 self.dataset.addSource(100000, lsst.geom.Point2D(20, 100))
131 self.dataset.addSource(100000, lsst.geom.Point2D(40, 100))
132 self.dataset.addSource(100000, lsst.geom.Point2D(80, 30))
134 task = self.makeSingleFrameMeasurementTask("base_PixelFlags")
135 exposure, catalog = self.dataset.realize(10.0, task.schema, randomSeed=0)
137 # Mask 4 pixels at the y-edges (note numpy vs. afw flipped indices!)
138 edgeBit = exposure.mask.getPlaneBitMask("EDGE")
139 exposure.mask.array[:4, :] |= edgeBit
140 exposure.mask.array[-4:, ] |= edgeBit
141 # Mask 4 pixels at the x-edges
142 nodataBit = exposure.mask.getPlaneBitMask("NO_DATA")
143 exposure.mask.array[:, :4] |= nodataBit
144 exposure.mask.array[:, -4:] |= nodataBit
146 # All of these should get Center and CenterAll.
147 catalog[0]["slot_Centroid_x"] = -20.5 # on image
148 catalog[1]["slot_Centroid_x"] = -20.51 # off image
149 catalog[2]["slot_Centroid_y"] = 129.4 # on image
150 catalog[3]["slot_Centroid_y"] = 129.50 # off image
152 task.run(catalog, exposure)
154 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_offimage"],
155 np.array([False, True, False, True]))
157 # Centroid and footprints don't line up, so edge is only set for the
158 # sources that have off-image centroids.
159 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edge"],
160 np.array([False, True, False, True]))
161 # Center[All] is set for off-image and on-EDGE sources, because it's
162 # based on the centroid location.
163 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenter"],
164 np.array([False, True, True, True]))
165 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenterAll"],
166 np.array([False, True, True, True]))
168 # Centroid and footprints don't line up, so nodata is not set.
169 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodata"],
170 np.array([False, False, False, False]))
171 # Center[All] is set for on-NO_DATA sources, because it's based on the
172 # centroid location.
173 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodataCenter"],
174 np.array([True, True, False, False]))
175 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodataCenterAll"],
176 np.array([True, True, False, False]))
178 def testEdgeFlags(self):
179 """Test that edge/edgeCenter/edgeCenterAll and the equivalent nodata
180 flags are set appropriately.
181 """
182 # Half of the Central 3x3 pixels are on the masked NO_DATA; no offimage or
183 # nodataCenterAll, but nodata and nodataCenter.
184 self.dataset.addSource(100000, lsst.geom.Point2D(115, 30))
185 # Central 3x3 pixels all masked EDGE; no offimage but all edge flags.
186 self.dataset.addSource(100000, lsst.geom.Point2D(10, 127))
188 task = self.makeSingleFrameMeasurementTask("base_PixelFlags")
189 exposure, catalog = self.dataset.realize(10.0, task.schema, randomSeed=0)
191 # Mask 4 pixels at the y-edges (note numpy vs. afw flipped indices!)
192 edgeBit = exposure.mask.getPlaneBitMask("EDGE")
193 exposure.mask.array[:4, :] |= edgeBit
194 exposure.mask.array[-4:, ] |= edgeBit
195 # Mask 4 pixels at the x-edges
196 nodataBit = exposure.mask.getPlaneBitMask("NO_DATA")
197 exposure.mask.array[:, :4] |= nodataBit
198 exposure.mask.array[:, -4:] |= nodataBit
200 task.run(catalog, exposure)
202 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_offimage"],
203 np.array([False, False]))
205 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodata"],
206 np.array([True, False]))
207 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodataCenter"],
208 np.array([True, False]))
209 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_nodataCenterAll"],
210 np.array([False, False]))
212 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edge"],
213 np.array([False, True]))
214 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenter"],
215 np.array([False, True]))
216 np.testing.assert_array_equal(catalog["base_PixelFlags_flag_edgeCenterAll"],
217 np.array([False, True]))
220class TestMemory(lsst.utils.tests.MemoryTestCase):
221 pass
224def setup_module(module):
225 lsst.utils.tests.init()
228if __name__ == "__main__": 228 ↛ 229line 228 didn't jump to line 229 because the condition on line 228 was never true
229 lsst.utils.tests.init()
230 unittest.main()