lsst.meas.algorithms  14.0-7-g23fdbe95+10
defects.py
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1 #
2 # LSST Data Management System
3 #
4 # Copyright 2008-2017 AURA/LSST.
5 #
6 # This product includes software developed by the
7 # LSST Project (http://www.lsst.org/).
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22 #
23 """Support for image defects"""
24 
25 import lsst.afw.geom as afwGeom
26 import lsst.pex.policy as policy
27 from . import Defect
28 
29 
30 def policyToBadRegionList(policyFile):
31  """Given a Policy file describing a CCD's bad pixels, return a vector of BadRegion::Ptr"""
32 
33  badPixelsPolicy = policy.Policy.createPolicy(policyFile)
34  badPixels = []
35 
36  if badPixelsPolicy.exists("Defects"):
37  d = badPixelsPolicy.getArray("Defects")
38  for reg in d:
39  x0 = reg.get("x0")
40  width = reg.get("width")
41  if not width:
42  x1 = reg.get("x1")
43  width = x1 - x0 - 1
44 
45  y0 = reg.get("y0")
46  if reg.exists("height"):
47  height = reg.get("height")
48  else:
49  y1 = reg.get("y1")
50  height = y1 - y0 - 1
51 
52  bbox = afwGeom.BoxI(afwGeom.PointI(x0, y0), afwGeom.ExtentI(width, height))
53  badPixels.append(Defect(bbox))
54 
55  return badPixels
def policyToBadRegionList(policyFile)
Definition: defects.py:30