Hide keyboard shortcuts

Hot-keys on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

# 

# LSST Data Management System 

# 

# Copyright 2008-2017 AURA/LSST. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# 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 LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <https://www.lsstcorp.org/LegalNotices/>. 

# 

import unittest 

 

import lsst.utils.tests 

import lsst.afw.detection as afwDet 

import lsst.afw.geom as afwGeom 

import lsst.afw.image as afwImage 

from lsst.meas.deblender.plugins import clipFootprintToNonzeroImpl 

 

 

class ClipFootprintTestCase(lsst.utils.tests.TestCase): 

''' 

This is s a test to verify that clipping footprints to a non-zero region 

works as intended. It is expected that spans which contain leading or 

trailing zeros will be trimmed as to not include these values, while zeros 

which occur inside a span will be preserved. 

''' 

def testClip(self): 

im = afwImage.ImageI(afwGeom.Box2I(afwGeom.Point2I(-2, -2), 

afwGeom.Extent2I(20, 20))) 

 

span1 = afwGeom.SpanSet.fromShape(5, afwGeom.Stencil.BOX, (6, 6)) 

span1.setImage(im, 20) 

 

im.getArray()[6+2, 6+2] = 0 

 

# Set some negative pixels to ensure they are not clipped 

im.getArray()[12, :] *= -1 

 

span2 = afwGeom.SpanSet.fromShape(6, afwGeom.Stencil.BOX, (6, 6)) 

 

foot = afwDet.Footprint(span2) 

 

clipFootprintToNonzeroImpl(foot, im) 

 

self.assertEqual(foot.spans, span1) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

68 ↛ 69line 68 didn't jump to line 69, because the condition on line 68 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()