LSSTApplications  10.0-2-g4f67435,11.0.rc2+1,11.0.rc2+12,11.0.rc2+3,11.0.rc2+4,11.0.rc2+5,11.0.rc2+6,11.0.rc2+7,11.0.rc2+8
LSSTDataManagementBasePackage
defects.py
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1 #
2 # LSST Data Management System
3 # Copyright 2008, 2009, 2010 LSST Corporation.
4 #
5 # This product includes software developed by the
6 # LSST Project (http://www.lsst.org/).
7 #
8 # This program is free software: you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation, either version 3 of the License, or
11 # (at your option) any later version.
12 #
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
17 #
18 # You should have received a copy of the LSST License Statement and
19 # the GNU General Public License along with this program. If not,
20 # see <http://www.lsstcorp.org/LegalNotices/>.
21 #
22 
23 """Support for image defects"""
24 
25 import lsst.afw.image as afwImage
26 import lsst.afw.geom as afwGeom
27 import lsst.pex.policy as policy
28 import algorithmsLib
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 = algorithmsLib.DefectListT()
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.push_back(algorithmsLib.Defect(bbox))
54 
55  del badPixelsPolicy
56 
57  return badPixels
An integer coordinate rectangle.
Definition: Box.h:53