pktools  2.6.7
Processing Kernel for geospatial data
pksieve.cc
1 /**********************************************************************
2 pksieve.cc: program to sieve filter raster image
3 Copyright (C) 2008-2014 Pieter Kempeneers
4 
5 This file is part of pktools
6 
7 pktools is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11 
12 pktools is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16 
17 You should have received a copy of the GNU General Public License
18 along with pktools. If not, see <http://www.gnu.org/licenses/>.
19 ***********************************************************************/
20 #include "cpl_string.h"
21 #include "gdal_priv.h"
22 #include "gdal.h"
23 #include "imageclasses/ImgReaderGdal.h"
24 #include "imageclasses/ImgWriterGdal.h"
25 // #include "imageclasses/ImgWriterOgr.h"
26 #include "base/Optionpk.h"
27 #include "ogrsf_frmts.h"
28 extern "C" {
29 #include "gdal_alg.h"
30 #include "ogr_api.h"
31 }
32 /******************************************************************************/
72 using namespace std;
73 
74 int main(int argc,char **argv) {
75  Optionpk<string> input_opt("i", "input", "Input image file");
76  Optionpk<string> mask_opt("m", "mask", "Use the first band of the specified file as a validity mask (zero is invalid, non-zero is valid).");
77  Optionpk<string> output_opt("o", "output", "Output image file");
78  Optionpk<int> band_opt("b", "band", "the band to be used from input file", 0);
79  Optionpk<int> connect_opt("c", "connect", "the connectedness: 4 directions or 8 directions", 8);
80  Optionpk<int> size_opt("s", "size", "raster polygons with sizes smaller than this will be merged into their largest neighbour. No sieve is performed if size = 0", 0);
81  Optionpk<string> otype_opt("ot", "otype", "Data type for output image ({Byte/Int16/UInt16/UInt32/Int32/Float32/Float64/CInt16/CInt32/CFloat32/CFloat64}). Empty string: inherit type from input image", "");
82  Optionpk<string> option_opt("co", "co", "Creation option for output file. Multiple options can be specified.");
83  Optionpk<string> colorTable_opt("ct", "ct", "color table (file with 5 columns: id R G B ALFA (0: transparent, 255: solid)");
84  Optionpk<short> verbose_opt("v", "verbose", "verbose mode if > 0", 0,2);
85 
86  bool doProcess;//stop process when program was invoked with help option (-h --help)
87  try{
88  doProcess=input_opt.retrieveOption(argc,argv);
89  size_opt.retrieveOption(argc,argv);
90  output_opt.retrieveOption(argc,argv);
91  connect_opt.retrieveOption(argc,argv);
92  band_opt.retrieveOption(argc,argv);
93  mask_opt.retrieveOption(argc,argv);
94  otype_opt.retrieveOption(argc,argv);
95  option_opt.retrieveOption(argc,argv);
96  colorTable_opt.retrieveOption(argc,argv);
97  verbose_opt.retrieveOption(argc,argv);
98  }
99  catch(string predefinedString){
100  std::cout << predefinedString << std::endl;
101  exit(0);
102  }
103  if(!doProcess){
104  cout << endl;
105  cout << "Usage: pksieve -i input [-s size] -o output" << endl;
106  cout << endl;
107  std::cout << "short option -h shows basic options only, use long option --help to show all options" << std::endl;
108  exit(0);//help was invoked, stop processing
109  }
110 
111  GDALAllRegister();
112 
113  double dfComplete=0.0;
114  const char* pszMessage;
115  void* pProgressArg=NULL;
116  GDALProgressFunc pfnProgress=GDALTermProgress;
117  pfnProgress(dfComplete,pszMessage,pProgressArg);
118 
119  ImgReaderGdal maskReader;
120  GDALRasterBand *maskBand=NULL;
121  if(mask_opt.size()){
122  if(verbose_opt[0])
123  cout << "opening mask file " << mask_opt[0] << endl;
124  maskReader.open(mask_opt[0]);
125  maskBand = maskReader.getRasterBand(0);
126  }
127 
128  assert(input_opt.size());
129  assert(output_opt.size());
130  ImgReaderGdal inputReader(input_opt[0]);
131  GDALRasterBand *inputBand;
132  inputBand=inputReader.getRasterBand(band_opt[0]);
133 
134  ImgWriterGdal outputWriter;
135  GDALRasterBand *outputBand=NULL;
136  if(verbose_opt[0])
137  cout << "opening output file " << output_opt[0] << endl;
138  outputWriter.open(output_opt[0],inputReader);
139  if(colorTable_opt.size()){
140  if(colorTable_opt[0]!="none")
141  outputWriter.setColorTable(colorTable_opt[0]);
142  }
143  else if (inputReader.getColorTable()!=NULL)//copy colorTable from input image
144  outputWriter.setColorTable(inputReader.getColorTable());
145  outputBand = outputWriter.getRasterBand(0);
146  //sieve filter to remove small raster elements (overwrite input band)
147  if(size_opt[0]){
148  if(GDALSieveFilter((GDALRasterBandH)inputBand, (GDALRasterBandH)maskBand, (GDALRasterBandH)outputBand, size_opt[0], connect_opt[0],NULL,pfnProgress,pProgressArg)!=CE_None)
149  cerr << CPLGetLastErrorMsg() << endl;
150  else{
151  dfComplete=1.0;
152  pfnProgress(dfComplete,pszMessage,pProgressArg);
153  }
154  }
155  inputReader.close();
156  if(mask_opt.size())
157  maskReader.close();
158  outputWriter.close();
159 }
160 
STL namespace.
void close(void)
Set the memory (in MB) to cache a number of rows in memory.
void setColorTable(const std::string &filename, int band=0)
Set the color table using an (ASCII) file with 5 columns (value R G B alpha)
GDALRasterBand * getRasterBand(int band=0) const
Get the GDAL rasterband for this dataset.
void open(const std::string &filename, const ImgReaderGdal &imgSrc, const std::vector< std::string > &options=std::vector< std::string >())
Open an image for writing, copying image attributes from a source image. Image is directly written to...
void close(void)
Close the image.
void open(const std::string &filename, const GDALAccess &readMode=GA_ReadOnly)
Open an image.