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LSST Data Management Base Package
CoaddPsf.cc
Go to the documentation of this file.
1 // -*- LSST-C++ -*-
2 
3 /*
4  * LSST Data Management System
5  * Copyright 2008, 2009, 2010 LSST Corporation.
6  *
7  * This product includes software developed by the
8  * LSST Project (http://www.lsst.org/).
9  *
10  * This program is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 3 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the LSST License Statement and
21  * the GNU General Public License along with this program. If not,
22  * see <http://www.lsstcorp.org/LegalNotices/>.
23  */
24 
25 /*
26  * Represent a PSF as for a Coadd based on the James Jee stacking
27  * algorithm which was extracted from Stackfit.
28  */
29 #include <cmath>
30 #include <sstream>
31 #include <iostream>
32 #include <numeric>
33 #include "boost/iterator/iterator_adaptor.hpp"
34 #include "boost/iterator/transform_iterator.hpp"
35 #include "ndarray/eigen.h"
36 #include "lsst/base.h"
37 #include "lsst/pex/exceptions.h"
38 #include "lsst/geom/Box.h"
47 
48 namespace lsst {
49 namespace afw {
50 namespace table {
51 namespace io {
52 
55 
56 } // namespace io
57 } // namespace table
58 } // namespace afw
59 namespace meas {
60 namespace algorithms {
61 
62 namespace {
63 
64 // Struct used to simplify calculations in computeAveragePosition; lets us use
65 // std::accumulate instead of explicit for loop.
66 struct AvgPosItem {
67  double wx; // weighted x position
68  double wy; // weighted y position
69  double w; // weight value
70 
71  explicit AvgPosItem(double wx_ = 0.0, double wy_ = 0.0, double w_ = 0.0) : wx(wx_), wy(wy_), w(w_) {}
72 
73  // return point, assuming this is a sum of many AvgPosItems
74  geom::Point2D getPoint() const { return geom::Point2D(wx / w, wy / w); }
75 
76  // comparison so we can sort by weights
77  bool operator<(AvgPosItem const &other) const { return w < other.w; }
78 
79  AvgPosItem &operator+=(AvgPosItem const &other) {
80  wx += other.wx;
81  wy += other.wy;
82  w += other.w;
83  return *this;
84  }
85 
86  AvgPosItem &operator-=(AvgPosItem const &other) {
87  wx -= other.wx;
88  wy -= other.wy;
89  w -= other.w;
90  return *this;
91  }
92 
93  friend AvgPosItem operator+(AvgPosItem a, AvgPosItem const &b) { return a += b; }
94 
95  friend AvgPosItem operator-(AvgPosItem a, AvgPosItem const &b) { return a -= b; }
96 };
97 
98 geom::Point2D computeAveragePosition(afw::table::ExposureCatalog const &catalog,
99  afw::geom::SkyWcs const &coaddWcs, afw::table::Key<double> weightKey) {
100  afw::table::Key<int> goodPixKey;
101  try {
102  goodPixKey = catalog.getSchema()["goodpix"];
103  } catch (pex::exceptions::NotFoundError &) {
104  }
106  items.reserve(catalog.size());
107  for (afw::table::ExposureCatalog::const_iterator i = catalog.begin(); i != catalog.end(); ++i) {
108  geom::Point2D p = coaddWcs.skyToPixel(i->getWcs()->pixelToSky(i->getPsf()->getAveragePosition()));
109  AvgPosItem item(p.getX(), p.getY(), i->get(weightKey));
110  if (goodPixKey.isValid()) {
111  item.w *= i->get(goodPixKey);
112  }
113  item.wx *= item.w;
114  item.wy *= item.w;
115  items.push_back(item);
116  }
117  // This is a bit pessimistic - we save and sort all the weights all the time,
118  // even though we'll only need them if the average position from all of them
119  // is invalid. But it makes for simpler code, and it's not that expensive
120  // computationally anyhow.
121  std::sort(items.begin(), items.end());
122  AvgPosItem result = std::accumulate(items.begin(), items.end(), AvgPosItem());
123  // If the position isn't valid (no input frames contain it), we remove frames
124  // from the average until it does.
126  catalog.subsetContaining(result.getPoint(), coaddWcs, true).empty(); ++iter) {
127  if (iter == items.end()) {
128  // This should only happen if there are no inputs at all,
129  // or if constituent Psfs have a badly-behaved implementation
130  // of getAveragePosition().
131  throw LSST_EXCEPT(pex::exceptions::RuntimeError,
132  "Could not find a valid average position for CoaddPsf");
133  }
134  result -= *iter;
135  }
136  return result.getPoint();
137 }
138 
139 } // namespace
140 
141 CoaddPsf::CoaddPsf(afw::table::ExposureCatalog const &catalog, afw::geom::SkyWcs const &coaddWcs,
142  std::string const &weightFieldName, std::string const &warpingKernelName, int cacheSize)
143  : _coaddWcs(coaddWcs),
144  _warpingKernelName(warpingKernelName),
145  _warpingControl(std::make_shared<afw::math::WarpingControl>(warpingKernelName, "", cacheSize)) {
147  mapper.addMinimalSchema(afw::table::ExposureTable::makeMinimalSchema(), true);
148 
149  // copy the field "goodpix", if available, for computeAveragePosition to use
150  try {
151  afw::table::Key<int> goodPixKey = catalog.getSchema()["goodpix"]; // auto does not work
152  mapper.addMapping(goodPixKey, true);
153  } catch (pex::exceptions::NotFoundError &) {
154  }
155 
156  // copy the field specified by weightFieldName to field "weight"
157  afw::table::Field<double> weightField = afw::table::Field<double>("weight", "Coadd weight");
158  afw::table::Key<double> weightKey = catalog.getSchema()[weightFieldName];
159  _weightKey = mapper.addMapping(weightKey, weightField);
160 
161  _catalog = afw::table::ExposureCatalog(mapper.getOutputSchema());
162  for (afw::table::ExposureCatalog::const_iterator i = catalog.begin(); i != catalog.end(); ++i) {
163  std::shared_ptr<afw::table::ExposureRecord> record = _catalog.getTable()->makeRecord();
164  record->assign(*i, mapper);
165  _catalog.push_back(record);
166  }
167  _averagePosition = computeAveragePosition(_catalog, _coaddWcs, _weightKey);
168 }
169 
172  : _catalog(catalog),
173  _coaddWcs(coaddWcs),
174  _weightKey(_catalog.getSchema()["weight"]),
175  _averagePosition(averagePosition),
176  _warpingKernelName(warpingKernelName),
177  _warpingControl(new afw::math::WarpingControl(warpingKernelName, "", cacheSize)) {}
178 
179 std::shared_ptr<afw::detection::Psf> CoaddPsf::clone() const { return std::make_shared<CoaddPsf>(*this); }
180 
182  // Not implemented for WarpedPsf
183  throw LSST_EXCEPT(pex::exceptions::LogicError, "Not Implemented");
184 }
185 
186 // Read all the images from the Image Vector and return the BBox in xy0 offset coordinates
187 
190  // Calculate the box which will contain them all
191  for (unsigned int i = 0; i < imgVector.size(); i++) {
192  std::shared_ptr<afw::image::Image<double>> componentImg = imgVector[i];
193  geom::Box2I cBBox = componentImg->getBBox();
194  bbox.include(cBBox); // JFB: this works even on empty bboxes
195  }
196  return bbox;
197 }
198 
199 // Read all the images from the Image Vector and add them to image
200 
203  std::vector<double> const &weightVector) {
204  assert(imgVector.size() == weightVector.size());
205  for (unsigned int i = 0; i < imgVector.size(); i++) {
206  std::shared_ptr<afw::image::Image<double>> componentImg = imgVector[i];
207  double weight = weightVector[i];
208  double sum = ndarray::asEigenMatrix(componentImg->getArray()).sum();
209 
210  // Now get the portion of the component image which is appropriate to add
211  // If the default image size is used, the component is guaranteed to fit,
212  // but not if a size has been specified.
213  geom::Box2I cBBox = componentImg->getBBox();
214  geom::Box2I overlap(cBBox);
215  overlap.clip(image->getBBox());
216  // JFB: A subimage view of the image we want to add to, containing only the overlap region.
217  afw::image::Image<double> targetSubImage(*image, overlap);
218  // JFB: A subimage view of the image we want to add from, containing only the overlap region.
219  afw::image::Image<double> cSubImage(*componentImg, overlap);
220  targetSubImage.scaledPlus(weight / sum, cSubImage);
221  }
222 }
223 
225  afw::table::ExposureCatalog subcat = _catalog.subsetContaining(ccdXY, _coaddWcs, true);
226  if (subcat.empty()) {
227  throw LSST_EXCEPT(
229  (boost::format("Cannot compute BBox at point %s; no input images at that point.") % ccdXY)
230  .str());
231  }
232 
233  geom::Box2I ret;
234  for (auto const &exposureRecord : subcat) {
235  // compute transform from exposure pixels to coadd pixels
236  auto exposureToCoadd = afw::geom::makeWcsPairTransform(*exposureRecord.getWcs(), _coaddWcs);
237  WarpedPsf warpedPsf = WarpedPsf(exposureRecord.getPsf(), exposureToCoadd, _warpingControl);
238  geom::Box2I componentBBox = warpedPsf.computeBBox(ccdXY, color);
239  ret.include(componentBBox);
240  }
241 
242  return ret;
243 }
244 
247  // Get the subset of expoures which contain our coordinate within their validPolygons.
248  afw::table::ExposureCatalog subcat = _catalog.subsetContaining(ccdXY, _coaddWcs, true);
249  if (subcat.empty()) {
250  throw LSST_EXCEPT(
252  (boost::format("Cannot compute CoaddPsf at point %s; no input images at that point.") % ccdXY)
253  .str());
254  }
255  double weightSum = 0.0;
256 
257  // Read all the Psf images into a vector. The code is set up so that this can be done in chunks,
258  // with the image modified to accomodate
259  // However, we currently read all of the images.
261  std::vector<double> weightVector;
262 
263  for (auto const &exposureRecord : subcat) {
264  // compute transform from exposure pixels to coadd pixels
265  auto exposureToCoadd = afw::geom::makeWcsPairTransform(*exposureRecord.getWcs(), _coaddWcs);
267  try {
268  WarpedPsf warpedPsf = WarpedPsf(exposureRecord.getPsf(), exposureToCoadd, _warpingControl);
269  componentImg = warpedPsf.computeKernelImage(ccdXY, color);
270  } catch (pex::exceptions::RangeError &exc) {
271  LSST_EXCEPT_ADD(exc, (boost::format("Computing WarpedPsf kernel image for id=%d") %
272  exposureRecord.getId())
273  .str());
274  throw exc;
275  }
276  imgVector.push_back(componentImg);
277  weightSum += exposureRecord.get(_weightKey);
278  weightVector.push_back(exposureRecord.get(_weightKey));
279  }
280 
281  geom::Box2I bbox = getOverallBBox(imgVector);
282 
283  // create a zero image of the right size to sum into
284  std::shared_ptr<afw::detection::Psf::Image> image = std::make_shared<afw::detection::Psf::Image>(bbox);
285  *image = 0.0;
286  addToImage(image, imgVector, weightVector);
287  *image /= weightSum;
288  return image;
289 }
290 
291 int CoaddPsf::getComponentCount() const { return _catalog.size(); }
292 
294  if (index < 0 || index >= getComponentCount()) {
295  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
296  }
297  return _catalog[index].getPsf();
298 }
299 
301  if (index < 0 || index >= getComponentCount()) {
302  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
303  }
304  return *_catalog[index].getWcs();
305 }
306 
308  if (index < 0 || index >= getComponentCount()) {
309  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
310  }
311  return _catalog[index].getValidPolygon();
312 }
313 
314 double CoaddPsf::getWeight(int index) {
315  if (index < 0 || index >= getComponentCount()) {
316  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
317  }
318  return _catalog[index].get(_weightKey);
319 }
320 
322  if (index < 0 || index >= getComponentCount()) {
323  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
324  }
325  return _catalog[index].getId();
326 }
327 
329  if (index < 0 || index >= getComponentCount()) {
330  throw LSST_EXCEPT(pex::exceptions::RangeError, "index of CoaddPsf component out of range");
331  }
332  return _catalog[index].getBBox();
333 }
334 
335 // ---------- Persistence -----------------------------------------------------------------------------------
336 
337 // For persistence of CoaddPsf, we have two catalogs: the first has just one record, and contains
338 // the archive ID of the coadd WCS, the size of the warping cache, the name of the warping kernel,
339 // and the average position. The latter is simply the ExposureCatalog.
340 
341 namespace {
342 
343 // Singleton class that manages the first persistence catalog's schema and keys
344 class CoaddPsfPersistenceHelper {
345 public:
346  afw::table::Schema schema;
347  afw::table::Key<int> coaddWcs;
348  afw::table::Key<int> cacheSize;
349  afw::table::PointKey<double> averagePosition;
350  afw::table::Key<std::string> warpingKernelName;
351 
352  static CoaddPsfPersistenceHelper const &get() {
353  static CoaddPsfPersistenceHelper const instance;
354  return instance;
355  }
356 
357 private:
358  CoaddPsfPersistenceHelper()
359  : schema(),
360  coaddWcs(schema.addField<int>("coaddwcs", "archive ID of the coadd's WCS")),
361  cacheSize(schema.addField<int>("cachesize", "size of the warping cache")),
362  averagePosition(afw::table::PointKey<double>::addFields(
363  schema, "avgpos", "PSF accessors default position", "pixel")),
365  schema.addField<std::string>("warpingkernelname", "warping kernel name", 32)) {}
366 };
367 
368 } // namespace
369 
371 public:
373  read(InputArchive const &archive, CatalogVector const &catalogs) const {
374  if (catalogs.size() == 1u) {
375  // Old CoaddPsfs were saved in only one catalog, because we didn't
376  // save the warping parameters and average position, and we could
377  // save the coadd Wcs in a special final record.
378  return readV0(archive, catalogs);
379  }
380  LSST_ARCHIVE_ASSERT(catalogs.size() == 2u);
381  CoaddPsfPersistenceHelper const &keys1 = CoaddPsfPersistenceHelper::get();
382  LSST_ARCHIVE_ASSERT(catalogs.front().getSchema() == keys1.schema);
383  afw::table::BaseRecord const &record1 = catalogs.front().front();
386  *archive.get<afw::geom::SkyWcs>(record1.get(keys1.coaddWcs)),
387  record1.get(keys1.averagePosition), record1.get(keys1.warpingKernelName),
388  record1.get(keys1.cacheSize)));
389  }
390 
391  // Backwards compatibility for files saved before meas_algorithms commit
392  // 53e61fae (7/10/2013). Prior to that change, the warping configuration
393  // and the average position were not saved at all, making it impossible to
394  // reconstruct the average position exactly, but it's better to
395  // approximate than to fail completely.
397  CatalogVector const &catalogs) const {
398  auto internalCat = afw::table::ExposureCatalog::readFromArchive(archive, catalogs.front());
399  // Coadd WCS is stored in a special last record.
400  auto coaddWcs = internalCat.back().getWcs();
401  internalCat.pop_back();
402  // Attempt to reconstruct the average position. We can't do this
403  // exactly, since the catalog we saved isn't the same one that was
404  // used to compute the original average position.
405  afw::table::Key<double> weightKey;
406  try {
407  weightKey = internalCat.getSchema()["weight"];
408  } catch (pex::exceptions::NotFoundError &) {
409  }
410  auto averagePos = computeAveragePosition(internalCat, *coaddWcs, weightKey);
411  return std::shared_ptr<CoaddPsf>(new CoaddPsf(internalCat, *coaddWcs, averagePos));
412  }
413 
414  Factory(std::string const &name) : afw::table::io::PersistableFactory(name) {}
415 };
416 
417 namespace {
418 
419 std::string getCoaddPsfPersistenceName() { return "CoaddPsf"; }
420 
421 CoaddPsf::Factory registration(getCoaddPsfPersistenceName());
422 
423 } // namespace
424 
425 std::string CoaddPsf::getPersistenceName() const { return getCoaddPsfPersistenceName(); }
426 
427 std::string CoaddPsf::getPythonModule() const { return "lsst.meas.algorithms"; }
428 
430  CoaddPsfPersistenceHelper const &keys1 = CoaddPsfPersistenceHelper::get();
431  afw::table::BaseCatalog cat1 = handle.makeCatalog(keys1.schema);
433  auto coaddWcsPtr = std::make_shared<afw::geom::SkyWcs>(_coaddWcs);
434  record1->set(keys1.coaddWcs, handle.put(coaddWcsPtr));
435  record1->set(keys1.cacheSize, _warpingControl->getCacheSize());
436  record1->set(keys1.averagePosition, _averagePosition);
437  record1->set(keys1.warpingKernelName, _warpingKernelName);
438  handle.saveCatalog(cat1);
439  _catalog.writeToArchive(handle, false);
440 }
441 
442 } // namespace algorithms
443 } // namespace meas
444 } // namespace lsst
py::object result
Definition: _schema.cc:429
table::Key< std::string > name
Definition: Amplifier.cc:116
AmpInfoBoxKey bbox
Definition: Amplifier.cc:117
std::vector< SchemaItem< Flag > > * items
#define LSST_EXCEPT_ADD(e, m)
Add the current location and a message to an existing exception before rethrowing it.
Definition: Exception.h:54
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition: Exception.h:48
afw::table::Key< afw::table::Array< ImagePixelT > > image
SchemaMapper * mapper
Definition: SchemaMapper.cc:71
table::Key< int > b
table::Key< int > a
T accumulate(T... args)
#define LSST_ARCHIVE_ASSERT(EXPR)
An assertion macro used to validate the structure of an InputArchive.
Definition: Persistable.h:48
T back(T... args)
Basic LSST definitions.
lsst::geom::Box2I computeBBox(lsst::geom::Point2D position, image::Color color=image::Color()) const
Return the bounding box of the image returned by computeKernelImage()
Definition: Psf.cc:139
std::shared_ptr< Image > computeKernelImage(lsst::geom::Point2D position, image::Color color=image::Color(), ImageOwnerEnum owner=COPY) const
Return an Image of the PSF, in a form suitable for convolution.
Definition: Psf.cc:122
A 2-dimensional celestial WCS that transform pixels to ICRS RA/Dec, using the LSST standard for pixel...
Definition: SkyWcs.h:117
Describe the colour of a source.
Definition: Color.h:26
A class to represent a 2-dimensional array of pixels.
Definition: Image.h:51
void scaledPlus(double const c, Image< PixelT > const &rhs)
Add Image c*rhs to lhs.
Definition: Image.cc:488
Base class for all records.
Definition: BaseRecord.h:31
Field< T >::Value get(Key< T > const &key) const
Return the value of a field for the given key.
Definition: BaseRecord.h:151
std::shared_ptr< RecordT > addNew()
Create a new record, add it to the end of the catalog, and return a pointer to it.
Definition: Catalog.h:490
size_type size() const
Return the number of elements in the catalog.
Definition: Catalog.h:413
bool empty() const
Return true if the catalog has no records.
Definition: Catalog.h:410
iterator begin()
Iterator access.
Definition: Catalog.h:401
std::shared_ptr< Table > getTable() const
Return the table associated with the catalog.
Definition: Catalog.h:115
Schema getSchema() const
Return the schema associated with the catalog's table.
Definition: Catalog.h:118
std::shared_ptr< RecordT > const get(size_type i) const
Return a pointer to the record at index i.
Definition: Catalog.h:464
void push_back(Record const &r)
Add a copy of the given record to the end of the catalog.
Definition: Catalog.h:481
Custom catalog class for ExposureRecord/Table.
Definition: Exposure.h:311
typename Base::const_iterator const_iterator
Definition: Exposure.h:319
static ExposureCatalogT readFromArchive(io::InputArchive const &archive, BaseCatalog const &catalog)
Convenience input function for Persistables that contain an ExposureCatalog.
Definition: Exposure.cc:456
void writeToArchive(io::OutputArchiveHandle &handle, bool ignoreUnpersistable=true) const
Convenience output function for Persistables that contain an ExposureCatalog.
Definition: Exposure.cc:444
ExposureCatalogT subsetContaining(lsst::geom::SpherePoint const &coord, bool includeValidPolygon=false) const
Return a shallow subset of the catalog with only those records that contain the given point.
Definition: Exposure.cc:471
static Schema makeMinimalSchema()
Return a minimal schema for Exposure tables and records.
Definition: Exposure.h:216
A mapping between the keys of two Schemas, used to copy data between them.
Definition: SchemaMapper.h:21
A vector of catalogs used by Persistable.
Definition: CatalogVector.h:29
A multi-catalog archive object used to load table::io::Persistable objects.
Definition: InputArchive.h:31
std::shared_ptr< Persistable > get(int id) const
Load the Persistable with the given ID and return it.
An object passed to Persistable::write to allow it to persist itself.
void saveCatalog(BaseCatalog const &catalog)
Save a catalog in the archive.
BaseCatalog makeCatalog(Schema const &schema)
Return a new, empty catalog with the given schema.
int put(Persistable const *obj, bool permissive=false)
Save an object to the archive and return a unique ID that can be used to retrieve it from an InputArc...
static std::shared_ptr< T > dynamicCast(std::shared_ptr< Persistable > const &ptr)
Dynamically cast a shared_ptr.
Definition: Persistable.cc:18
A base class for factory classes used to reconstruct objects from records.
Definition: Persistable.h:228
PersistableFactory(std::string const &name)
Constructor for the factory.
Definition: Persistable.cc:74
An integer coordinate rectangle.
Definition: Box.h:55
void clip(Box2I const &other) noexcept
Shrink this to ensure that other.contains(*this).
Definition: Box.cc:189
void include(Point2I const &point)
Expand this to ensure that this->contains(point).
Definition: Box.cc:152
std::shared_ptr< afw::table::io::Persistable > readV0(InputArchive const &archive, CatalogVector const &catalogs) const
Definition: CoaddPsf.cc:396
Factory(std::string const &name)
Definition: CoaddPsf.cc:414
virtual std::shared_ptr< afw::table::io::Persistable > read(InputArchive const &archive, CatalogVector const &catalogs) const
Construct a new object from the given InputArchive and vector of catalogs.
Definition: CoaddPsf.cc:373
std::string getPersistenceName() const override
Return the unique name used to persist this object and look up its factory.
Definition: CoaddPsf.cc:425
std::shared_ptr< afw::detection::Psf > clone() const override
Polymorphic deep copy. Usually unnecessary, as Psfs are immutable.
Definition: CoaddPsf.cc:179
std::shared_ptr< afw::detection::Psf const > getPsf(int index)
Get the Psf of the component image at index.
Definition: CoaddPsf.cc:293
void write(OutputArchiveHandle &handle) const override
Write the object to one or more catalogs.
Definition: CoaddPsf.cc:429
std::string getPythonModule() const override
Return the fully-qualified Python module that should be imported to guarantee that its factory is reg...
Definition: CoaddPsf.cc:427
double getWeight(int index)
Get the weight of the component image at index.
Definition: CoaddPsf.cc:314
afw::table::RecordId getId(int index)
Get the exposure ID of the component image at index.
Definition: CoaddPsf.cc:321
geom::Box2I getBBox(int index)
Get the bounding box (in component image Pixel coordinates) of the component image at index.
Definition: CoaddPsf.cc:328
std::shared_ptr< afw::detection::Psf::Image > doComputeKernelImage(geom::Point2D const &ccdXY, afw::image::Color const &color) const override
These virtual member functions are private, not protected, because we only want derived classes to im...
Definition: CoaddPsf.cc:246
std::shared_ptr< afw::detection::Psf > resized(int width, int height) const override
Return a clone with specified kernel dimensions.
Definition: CoaddPsf.cc:181
std::shared_ptr< afw::geom::polygon::Polygon const > getValidPolygon(int index)
Get the validPolygon (in component image Pixel coordinates) of the component image at index.
Definition: CoaddPsf.cc:307
CoaddPsf(afw::table::ExposureCatalog const &catalog, afw::geom::SkyWcs const &coaddWcs, std::string const &weightFieldName="weight", std::string const &warpingKernelName="lanczos3", int cacheSize=10000)
Main constructors for CoaddPsf.
Definition: CoaddPsf.cc:141
geom::Box2I doComputeBBox(geom::Point2D const &position, afw::image::Color const &color) const override
Definition: CoaddPsf.cc:224
int getComponentCount() const
Return the number of component Psfs in this CoaddPsf.
Definition: CoaddPsf.cc:291
afw::geom::SkyWcs getWcs(int index)
Get the Wcs of the component image at index.
Definition: CoaddPsf.cc:300
A Psf class that maps an arbitrary Psf through a coordinate transformation.
Definition: WarpedPsf.h:52
Reports invalid arguments.
Definition: Runtime.h:66
Reports errors in the logical structure of the program.
Definition: Runtime.h:46
Reports attempts to access elements using an invalid key.
Definition: Runtime.h:151
Reports when the result of an operation cannot be represented by the destination type.
Definition: Runtime.h:115
T front(T... args)
std::shared_ptr< TransformPoint2ToPoint2 > makeWcsPairTransform(SkyWcs const &src, SkyWcs const &dst)
A Transform obtained by putting two SkyWcs objects "back to back".
Definition: SkyWcs.cc:146
Backwards-compatibility support for depersisting the old Calib (FluxMag0/FluxMag0Err) objects.
std::shared_ptr< Image< PixelT > > operator+(Image< PixelT > const &img, ImageSlice< PixelT > const &slc)
Overload operator+()
Definition: ImageSlice.cc:69
Image< LhsPixelT > & operator+=(Image< LhsPixelT > &lhs, Image< RhsPixelT > const &rhs)
Add lhs to Image rhs (i.e. pixel-by-pixel addition) where types are different.
Definition: Image.cc:659
Image< LhsPixelT > & operator-=(Image< LhsPixelT > &lhs, Image< RhsPixelT > const &rhs)
Subtract lhs from Image rhs (i.e. pixel-by-pixel subtraction) where types are different.
Definition: Image.cc:665
std::shared_ptr< Image< PixelT > > operator-(Image< PixelT > const &img, ImageSlice< PixelT > const &slc)
Overload operator-()
Definition: ImageSlice.cc:89
ExposureCatalogT< ExposureRecord > ExposureCatalog
Definition: Exposure.h:489
Point< double, 2 > Point2D
Definition: Point.h:324
void addToImage(std::shared_ptr< afw::image::Image< double >> image, std::vector< std::shared_ptr< afw::image::Image< double >>> const &imgVector, std::vector< double > const &weightVector)
Definition: CoaddPsf.cc:201
geom::Box2I getOverallBBox(std::vector< std::shared_ptr< afw::image::Image< double >>> const &imgVector)
Definition: CoaddPsf.cc:188
def format(config, name=None, writeSourceLine=True, prefix="", verbose=False)
Definition: history.py:174
A base class for image defects.
STL namespace.
T push_back(T... args)
T size(T... args)
T sort(T... args)
afw::table::Key< double > weight
afw::table::Key< int > cacheSize
Definition: CoaddPsf.cc:348
afw::table::PointKey< double > averagePosition
Definition: CoaddPsf.cc:349
afw::table::Key< int > coaddWcs
Definition: CoaddPsf.cc:347
double wx
Definition: CoaddPsf.cc:67
double wy
Definition: CoaddPsf.cc:68
afw::table::Schema schema
Definition: CoaddPsf.cc:346
afw::table::Key< std::string > warpingKernelName
Definition: CoaddPsf.cc:350
double w
Definition: CoaddPsf.cc:69
A description of a field in a table.
Definition: Field.h:24