/usr/include/casacore/scimath/Mathematics/Smooth.tcc is in casacore-dev 2.2.0-2.
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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 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | //# Smooth.tcc: perform smoothing on vectors and arrays
//# Copyright (C) 2010 by ESO (in the framework of the ALMA collaboration)
//# Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
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//# $Id$
#ifndef SCIMATH_SMOOTH_TCC
#define SCIMATH_SMOOTH_TCC
//
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/Array.h>
#include <casacore/casa/Arrays/ArrayIter.h>
#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/Arrays/Matrix.h>
#include <casacore/scimath/Mathematics/Smooth.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
template <class T>
void Smooth<T>::hanning(Vector<T>& out, Vector<Bool>& outmask,
Vector<T>& in, Vector<Bool>& mask,
Bool TrueIsGood, Bool relaxed) {
DebugAssert(out.shape().isEqual(in.shape()), AipsError);
DebugAssert(outmask.shape().isEqual(mask.shape()), AipsError);
Vector< Vector<Float> > weights(8);
Vector<Float> vals(3);
vals = 0.0; weights[0] = vals;// FFF
vals[0] = 1.0; vals[1] = 0.0; vals[2] = 0.0; weights[1] = vals;// TFF
vals[0] = 0.0; vals[1] = 1.0; vals[2] = 0.0; weights[2] = vals;// FTF
vals[0] = 1.0/3.0; vals[1] = 2.0/3.0; vals[2] = 0.0; weights[3] = vals;// TTF
vals[0] = 0.0; vals[1] = 0.0; vals[2] = 1.0;weights[4] = vals;// FFT
vals[0] = 0.5; vals[1] = 0.0; vals[2] = 0.5; weights[5] = vals;// TFT
vals[0] = 0.0; vals[1] = 2.0/3.0; vals[2] = 1.0/3.0; weights[6] = vals;// FTT
vals[0] = 0.25; vals[1] = 0.5; vals[2] = 0.25; weights[7] = vals;// TTT
Vector<Bool> weighted(8);
if (relaxed) {
weighted = False;
weighted[7] = True;
} else {
weighted = True;
weighted[0] = False;
}
// make special case for first and last
out[0] = in[0];
outmask[0] = mask[0];
uInt nelm1 = in.nelements()-1;
uInt m;
Vector<Float>* w;
if(nelm1>0){
m = 2*(mask[0]==TrueIsGood) + 4*(mask[1]==TrueIsGood);
w = &(weights[m]);
if (weighted[m]) {
out[0] = (*w)[1]*in[0] + (*w)[2]*in[1];
outmask[0] = True==TrueIsGood;
}
else{
if(mask[0]==TrueIsGood){
out[0] = (*w)[1]*in[0] + (*w)[2]*in[1];
}
else{
out[0] = in[0];
}
outmask[0] = False==TrueIsGood;
}
m = (mask[nelm1]==TrueIsGood) + 2*(mask[nelm1-1]==TrueIsGood);
w = &(weights[m]);
if (weighted[m]) {
out[nelm1] = (*w)[1]*in[nelm1] + (*w)[0]*in[nelm1-1];
outmask[nelm1] = True==TrueIsGood;
}
else{
if(mask[nelm1]==TrueIsGood){
out[nelm1] = (*w)[1]*in[nelm1] + (*w)[0]*in[nelm1-1];
}
else{
out[nelm1] = in[nelm1];
}
outmask[nelm1] = False==TrueIsGood;
}
}
// loop from 1..n-2
for(uInt i=1; i < nelm1; i++){
m = (mask[i-1]==TrueIsGood) + 2*(mask[i]==TrueIsGood) + 4*(mask[i+1]==TrueIsGood);
w = &(weights[m]);
if (weighted[m]) {
out[i] = (*w)[0]*in[i-1] + (*w)[1]*in[i] + (*w)[2]*in[i+1];
outmask[i] = True==TrueIsGood;
}
else{
if(mask[i]==TrueIsGood){
out[i] = (*w)[0]*in[i-1] + (*w)[1]*in[i] + (*w)[2]*in[i+1];
}
else{
out[i] = in[i];
}
outmask[i] = False==TrueIsGood;
}
}
}
template <class T>
void Smooth<T>::hanning(Array<T>& out, Array<Bool>& outmask,
Array<T>& in, Array<Bool>& mask,
Bool TrueIsGood, Bool relaxed) {
Matrix<T> min(in);
Matrix<T> mout(out);
Matrix<Bool> mmask(mask);
Matrix<Bool> moutmask(outmask);
for(uInt i=0; i<in.shape()[0]; i++){
Vector<T> vout(mout.row(i));
Vector<Bool> voutMask(moutmask.row(i));
Vector<T> vin(min.row(i));
Vector<Bool> vinMask(mmask.row(i));
Smooth<T>::hanning(vout, voutMask, vin, vinMask,
TrueIsGood, relaxed);
}
}
} //# NAMESPACE CASACORE - END
#endif
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