LCOV - code coverage report
Current view: top level - synthesis/MeasurementComponents - CleanImageSkyModel.cc (source / functions) Hit Total Coverage
Test: casacpp_coverage.info Lines: 6 144 4.2 %
Date: 2024-10-12 00:35:29 Functions: 4 15 26.7 %

          Line data    Source code
       1             : //# CleanImageSkyModel.cc: Implementation of CleanImageSkyModel classes
       2             : //# Copyright (C) 1996,1997,1998,1999,2000,2001,2003
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //#
       5             : //# This library is free software; you can redistribute it and/or modify it
       6             : //# under the terms of the GNU Library General Public License as published by
       7             : //# the Free Software Foundation; either version 2 of the License, or (at your
       8             : //# option) any later version.
       9             : //#
      10             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      11             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library General Public License
      16             : //# along with this library; if not, write to the Free Software Foundation,
      17             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      18             : //#
      19             : //# Correspondence concerning AIPS++ should be addressed as follows:
      20             : //#        Internet email: casa-feedback@nrao.edu.
      21             : //#        Postal address: AIPS++ Project Office
      22             : //#                        National Radio Astronomy Observatory
      23             : //#                        520 Edgemont Road
      24             : //#                        Charlottesville, VA 22903-2475 USA
      25             : //#
      26             : //# $Id$
      27             : 
      28             : #include <casacore/casa/Arrays/ArrayMath.h>
      29             : #include <synthesis/MeasurementComponents/CleanImageSkyModel.h>
      30             : #include <components/ComponentModels/SkyComponent.h>
      31             : #include <components/ComponentModels/ComponentList.h>
      32             : #include <casacore/casa/OS/File.h>
      33             : #include <synthesis/MeasurementEquations/SkyEquation.h>
      34             : #include <synthesis/TransformMachines/StokesImageUtil.h>
      35             : #include <casacore/casa/Exceptions/Error.h>
      36             : #include <casacore/casa/BasicSL/String.h>
      37             : #include <casacore/casa/Utilities/Assert.h>
      38             : 
      39             : #include <casacore/tables/Tables/TableLock.h>
      40             : 
      41             : #include <sstream>
      42             : 
      43             : #include <casacore/casa/Logging/LogMessage.h>
      44             : #include <casacore/casa/Logging/LogIO.h>
      45             : #include <casacore/casa/Logging/LogSink.h>
      46             : 
      47             : using namespace casacore;
      48             : namespace casa { //# NAMESPACE CASA - BEGIN
      49             : #define NEED_UNDERSCORES
      50             : #if defined(NEED_UNDERSCORES)
      51             : #define maximg maximg_
      52             : #endif
      53             : extern "C" {
      54             :   void maximg(Float*, int*, Float*, int*, int*, int*, Float*, Float*);
      55             : };
      56             : 
      57          37 :   CleanImageSkyModel::CleanImageSkyModel() : ImageSkyModel(), doPolJoint_p(true)
      58             : {
      59             : 
      60             : 
      61          37 : }
      62             : 
      63           0 : Bool CleanImageSkyModel::addMask(Int thismodel, ImageInterface<Float>& mask)
      64             : {
      65           0 :   LogIO os(LogOrigin("CleanImageSkyModel", "addMask"));
      66           0 :   if(thismodel>=nmodels_p||thismodel<0) {
      67           0 :     os << LogIO::SEVERE << "Illegal model slot" << thismodel << LogIO::POST;
      68           0 :     return false;
      69             :   }
      70           0 :   if(Int(mask_p.nelements())<=thismodel) mask_p.resize(thismodel+1);
      71           0 :   mask_p[thismodel] = &mask;
      72           0 :   AlwaysAssert(mask_p[thismodel], AipsError);
      73           0 :   return true;
      74           0 : }
      75             :   
      76           0 :   CleanImageSkyModel::CleanImageSkyModel(const CleanImageSkyModel& other) : ImageSkyModel() {
      77           0 :   operator=(other);
      78           0 : };
      79             : 
      80          74 : CleanImageSkyModel::~CleanImageSkyModel() {
      81          74 : };
      82             : 
      83           0 : CleanImageSkyModel& CleanImageSkyModel::operator=(const CleanImageSkyModel& other) {
      84           0 :   if(this!=&other) {
      85           0 :     for (Int thismodel=0;thismodel<nmodels_p;thismodel++) {
      86           0 :       mask_p[thismodel]=other.mask_p[thismodel];
      87           0 :       fluxmask_p[thismodel]=other.fluxmask_p[thismodel];
      88             :     }
      89             :   };
      90           0 :   return *this;
      91             : }
      92             : 
      93          37 : Bool CleanImageSkyModel::add(ComponentList& compList)
      94             : {
      95          37 :   return ImageSkyModel::add(compList);
      96             : }
      97             :  
      98           0 : Int CleanImageSkyModel::add(ImageInterface<Float>& image, const Int maxNumXfr)
      99             : {
     100           0 :   Int index=ImageSkyModel::add(image, maxNumXfr);
     101             : 
     102           0 :   mask_p.resize(nmodels_p); 
     103           0 :   fluxmask_p.resize(nmodels_p);
     104             :   
     105           0 :   mask_p[index]=0;
     106           0 :   fluxmask_p[index]=0;
     107             : 
     108           0 :   return index;
     109             : }
     110             : 
     111           0 : Bool CleanImageSkyModel::hasMask(Int model) 
     112             : {
     113           0 :   if(mask_p.nelements()==0) return false;
     114           0 :   return (mask_p[model]);
     115             : }
     116             : 
     117           0 : ImageInterface<Float>& CleanImageSkyModel::mask(Int model) 
     118             : {
     119           0 :   AlwaysAssert(nmodels_p>0, AipsError);
     120           0 :   AlwaysAssert((model>-1)&&(model<nmodels_p), AipsError);
     121           0 :   AlwaysAssert(mask_p[model], AipsError);
     122           0 :   return *mask_p[model];
     123             : };
     124             : 
     125           0 : Bool CleanImageSkyModel::hasFluxMask(Int model) 
     126             : {
     127           0 :   if(fluxmask_p.nelements()==0) return false;
     128           0 :   return (fluxmask_p[model]);
     129             : }
     130             : 
     131           0 : ImageInterface<Float>& CleanImageSkyModel::fluxMask(Int model) 
     132             : {
     133           0 :   AlwaysAssert(nmodels_p>0, AipsError);
     134           0 :   AlwaysAssert((model>-1)&&(model<nmodels_p), AipsError);
     135           0 :   AlwaysAssert(fluxmask_p[model], AipsError);
     136           0 :   return *fluxmask_p[model];
     137             : };
     138             : 
     139           0 : Bool CleanImageSkyModel::addFluxMask(Int thismodel, ImageInterface<Float>& fluxMask)
     140             : {
     141           0 :   LogIO os(LogOrigin("CleanImageSkyModel", "add"));
     142           0 :   if(thismodel>=nmodels_p||thismodel<0) {
     143           0 :     os << LogIO::SEVERE << "Illegal model slot" << thismodel << LogIO::POST;
     144           0 :     return false;
     145             :   }
     146           0 :   if(Int(fluxmask_p.nelements())<=thismodel) fluxmask_p.resize(thismodel+1);
     147           0 :   fluxmask_p[thismodel] = &fluxMask;
     148           0 :   AlwaysAssert(fluxmask_p[thismodel], AipsError);
     149           0 :   return true;
     150           0 : }
     151             : 
     152           0 : void  CleanImageSkyModel::setJointStokesClean(Bool joint) {
     153           0 :   doPolJoint_p=joint;
     154           0 : }
     155             : 
     156             : // Find maximum residual
     157           0 : Float CleanImageSkyModel::maxField(Vector<Float>& imagemax,
     158             :                                      Vector<Float>& imagemin) {
     159             : 
     160           0 :   LogIO os(LogOrigin("ImageSkyModel","maxField"));
     161             :   
     162           0 :   Float absmax=0.0;
     163           0 :   imagemax.resize(numberOfModels());
     164           0 :   imagemin.resize(numberOfModels());
     165           0 :   imagemax=-1e20;
     166           0 :   imagemin=1e20;
     167             : 
     168             :  
     169             :  
     170             : 
     171             :   // Loop over all models
     172           0 :   for (Int model=0;model<numberOfModels();model++) {
     173             :     // Find maximum of ggS for scaling in maximg
     174           0 :     Float maxggS=0.0;  
     175             :     {
     176           0 :       LatticeExprNode LEN = max(LatticeExpr<Float>(ggS(model)));
     177           0 :       maxggS = LEN.getFloat();
     178           0 :     }
     179             :     // Remember that the residual image can be either as specified
     180             :     // or created specially.
     181           0 :     ImageInterface<Float>* imagePtr=0;
     182           0 :     if(residual_p[model]) {
     183           0 :       imagePtr=residual_p[model];
     184             :     }
     185             :     else {
     186           0 :       imagePtr=(ImageInterface<Float> *)residualImage_p[model];
     187             :     }
     188           0 :     AlwaysAssert(imagePtr, AipsError);
     189           0 :     AlwaysAssert(imagePtr->shape().nelements()==4, AipsError);
     190           0 :     Int nx=imagePtr->shape()(0);
     191           0 :     Int ny=imagePtr->shape()(1);
     192           0 :     Int npol=imagePtr->shape()(2);
     193           0 :     Int nchan=imagePtr->shape()(3);
     194             : 
     195             :     //    AlwaysAssert((npol==1)||(npol==2)||(npol==4), AipsError);
     196             :     
     197             :     // Loop over all channels
     198           0 :     IPosition oneSlab(4, nx, ny, npol, 1);
     199           0 :     LatticeStepper ls(imagePtr->shape(), oneSlab, IPosition(4, 0, 1, 2, 3));
     200           0 :     IPosition onePlane(4, nx, ny, 1, 1);
     201           0 :     LatticeStepper fsls(ggS(model).shape(), oneSlab,
     202           0 :                         IPosition(4,0,1,2,3));
     203           0 :     RO_LatticeIterator<Float> ggSli(ggS(model),fsls);
     204           0 :     LatticeIterator<Float> imageli(*imagePtr, ls);
     205             :     
     206             :     // If we are using a mask then reset the region to be
     207             :     // cleaned
     208           0 :     Array<Float> maskArray;
     209           0 :     RO_LatticeIterator<Float> maskIter;
     210           0 :     Bool cubeMask=false;
     211             :     
     212           0 :     Int domask=0;
     213           0 :     if(hasMask(model)) {
     214           0 :       Int mx=mask(model).shape()(0);
     215           0 :       Int my=mask(model).shape()(1);
     216           0 :       Int mpol=mask(model).shape()(2);
     217           0 :       Int nMaskChan=0;
     218           0 :       if(mask(model).shape().nelements()==4){
     219           0 :         nMaskChan=mask(model).shape()(3);
     220             :       }
     221           0 :       if( (nchan >1) && nMaskChan==nchan)
     222           0 :         cubeMask=true;
     223           0 :       if((mx != nx) || (my != ny) || (mpol != npol)){
     224           0 :         throw(AipsError("Mask image shape is not the same as dirty image"));
     225             :       }
     226           0 :       LatticeStepper mls(mask(model).shape(), oneSlab,
     227           0 :                          IPosition(4, 0, 1, 2, 3));
     228             :       
     229           0 :       RO_LatticeIterator<Float> maskli(mask(model), mls);
     230           0 :       maskli.reset();
     231           0 :       maskIter=maskli;
     232           0 :       if (maskli.cursor().shape().nelements() > 1) {
     233           0 :         domask=1;
     234           0 :         maskArray=maskli.cursor();
     235             :       }
     236           0 :     }
     237             :     
     238           0 :     Int chan=0;
     239             :     Float imax, imin;
     240           0 :     imax=-1E20; imagemax(model)=imax;
     241           0 :     imin=+1E20; imagemin(model)=imin;
     242             : 
     243           0 :     for (imageli.reset(),ggSli.reset();!imageli.atEnd();imageli++,ggSli++,chan++) {
     244             :       Float fmax, fmin;
     245             :       Bool delete_its;
     246             :       Bool delete_its2;
     247             :       // Renormalize by the weights
     248           0 :       if(cubeMask){
     249           0 :         if(maskIter.cursor().shape().nelements() > 1){
     250           0 :           domask=1;
     251           0 :           maskArray=maskIter.cursor();
     252             :         }
     253           0 :         maskIter++;
     254             :         
     255             :       }
     256             :       
     257           0 :       Cube<Float> weight(sqrt(ggSli.cursor().nonDegenerate(3)/maxggS));
     258             :       // resid=(imageli.cursor().nonDegenerate(3)) does not make a
     259             :       // copy.  This is a bug in LatticeIterator.cursor().
     260             :       //
     261             :       // As a result resid gets modified for the rest of the code
     262             :       // (residual image is multipled by sqrt(ggS)!!
     263             :       //
     264             :       // For now, using Cube::assign() to force a copy.
     265           0 :       Cube<Float>resid;resid.assign(imageli.cursor().nonDegenerate(3));
     266           0 :       for (Int pol=0;pol<npol;pol++) {
     267           0 :         for (Int iy=0;iy<ny;iy++) {
     268           0 :           for (Int ix=0;ix<nx;ix++) {
     269           0 :             resid(ix,iy,pol)*=weight(ix,iy,pol);
     270             :           }
     271             :         }
     272             :       }
     273           0 :       const Float* limage_data=resid.getStorage(delete_its);
     274           0 :       const Float* lmask_data=maskArray.getStorage(delete_its2);
     275           0 :       maximg((Float*)limage_data, &domask, (Float*)lmask_data,
     276             :              &nx, &ny, &npol, &fmin, &fmax);
     277             : 
     278             :       
     279           0 :       resid.freeStorage(limage_data, delete_its);
     280           0 :       maskArray.freeStorage(lmask_data, delete_its2);
     281           0 :       if(fmax<0.99*imax) fmax=0.0;
     282           0 :       if(fmin>0.99*imin) fmin=0.0;
     283           0 :       if(abs(fmax)>absmax) absmax=abs(fmax);
     284           0 :       if(abs(fmin)>absmax) absmax=abs(fmin);
     285           0 :       if(fmin<imagemin(model)) imagemin(model)=fmin;
     286           0 :       if(fmax>imagemax(model)) imagemax(model)=fmax;
     287           0 :     }
     288           0 :   }
     289           0 :   return absmax;
     290           0 : };
     291             : 
     292             : 
     293             : } //# NAMESPACE CASA - END
     294             : 

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