[299] | 1 | // ----------------------------------------------------------------------- |
---|
| 2 | // filter.cc: Defining a filter function for wavelet reconstruction. |
---|
| 3 | // ----------------------------------------------------------------------- |
---|
| 4 | // Copyright (C) 2006, Matthew Whiting, ATNF |
---|
| 5 | // |
---|
| 6 | // This program is free software; you can redistribute it and/or modify it |
---|
| 7 | // under the terms of the GNU General Public License as published by the |
---|
| 8 | // Free Software Foundation; either version 2 of the License, or (at your |
---|
| 9 | // option) any later version. |
---|
| 10 | // |
---|
| 11 | // Duchamp is distributed in the hope that it will be useful, but WITHOUT |
---|
| 12 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
---|
| 13 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
---|
| 14 | // for more details. |
---|
| 15 | // |
---|
| 16 | // You should have received a copy of the GNU General Public License |
---|
| 17 | // along with Duchamp; if not, write to the Free Software Foundation, |
---|
| 18 | // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
---|
| 19 | // |
---|
| 20 | // Correspondence concerning Duchamp may be directed to: |
---|
| 21 | // Internet email: Matthew.Whiting [at] atnf.csiro.au |
---|
| 22 | // Postal address: Dr. Matthew Whiting |
---|
| 23 | // Australia Telescope National Facility, CSIRO |
---|
| 24 | // PO Box 76 |
---|
| 25 | // Epping NSW 1710 |
---|
| 26 | // AUSTRALIA |
---|
| 27 | // ----------------------------------------------------------------------- |
---|
[139] | 28 | #include <iostream> |
---|
| 29 | #include <sstream> |
---|
[393] | 30 | #include <duchamp/duchamp.hh> |
---|
| 31 | #include <duchamp/ATrous/filter.hh> |
---|
[3] | 32 | #include <math.h> |
---|
[258] | 33 | #include <vector> |
---|
[3] | 34 | |
---|
[378] | 35 | namespace duchamp |
---|
[3] | 36 | { |
---|
[365] | 37 | |
---|
[1339] | 38 | Filter::Filter(): |
---|
| 39 | name("") |
---|
[378] | 40 | { |
---|
[1339] | 41 | this->sigmaFactors = std::vector< std::vector<double>* >(3); |
---|
| 42 | this->maxNumScales = std::vector<unsigned int>(3,0); |
---|
[378] | 43 | } |
---|
[365] | 44 | |
---|
[378] | 45 | Filter::Filter(const Filter& f) |
---|
| 46 | { |
---|
| 47 | operator=(f); |
---|
| 48 | } |
---|
[365] | 49 | |
---|
[378] | 50 | Filter& Filter::operator=(const Filter& f) |
---|
| 51 | { |
---|
| 52 | if(this==&f) return *this; |
---|
| 53 | this->name = f.name; |
---|
| 54 | this->filter1D = f.filter1D; |
---|
| 55 | this->maxNumScales = f.maxNumScales; |
---|
| 56 | this->sigmaFactors = f.sigmaFactors; |
---|
| 57 | return *this; |
---|
| 58 | } |
---|
[3] | 59 | |
---|
[378] | 60 | //----------------------------------------------------------------------- |
---|
[3] | 61 | |
---|
[378] | 62 | Filter::~Filter() |
---|
| 63 | { |
---|
[468] | 64 | this->filter1D.clear(); |
---|
| 65 | this->maxNumScales.clear(); |
---|
| 66 | this->sigmaFactors.clear(); |
---|
[378] | 67 | } |
---|
| 68 | //----------------------------------------------------------------------- |
---|
| 69 | |
---|
| 70 | |
---|
[1026] | 71 | unsigned int Filter::getNumScales(size_t length) |
---|
[378] | 72 | { |
---|
[846] | 73 | unsigned int num; |
---|
[1026] | 74 | if(length==0) return 0; |
---|
[378] | 75 | switch(this->filter1D.size()){ |
---|
| 76 | case 5: |
---|
[855] | 77 | num = int(log(double(length-1))/M_LN2) - 1; |
---|
[3] | 78 | break; |
---|
[378] | 79 | case 3: |
---|
[855] | 80 | num = int(log(double(length-1))/M_LN2); |
---|
[378] | 81 | break; |
---|
| 82 | default: |
---|
[855] | 83 | num = 1 + int(log(double(length-1)/double(this->filter1D.size()-1))/M_LN2); |
---|
[378] | 84 | break; |
---|
[3] | 85 | } |
---|
[846] | 86 | return num; |
---|
[220] | 87 | } |
---|
[378] | 88 | //----------------------------------------------------------------------- |
---|
[220] | 89 | |
---|
[846] | 90 | unsigned int Filter::getMaxSize(int scale) |
---|
[378] | 91 | { |
---|
| 92 | switch(this->filter1D.size()){ |
---|
| 93 | case 5: |
---|
| 94 | return int(pow(2,scale+1)) + 1; |
---|
| 95 | break; |
---|
| 96 | case 3: |
---|
| 97 | return int(pow(2,scale)) + 1; |
---|
| 98 | break; |
---|
| 99 | default: |
---|
| 100 | return int(pow(2,scale-1))*(this->filter1D.size()-1) + 1; |
---|
| 101 | break; |
---|
| 102 | } |
---|
[220] | 103 | } |
---|
[1339] | 104 | |
---|
[3] | 105 | } |
---|