vigra - imageIO_tutorial.cxx

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imageIO_tutorial.cxx |

A complete image I/O example
Usage: `imageIO_tutorial infile outfile`

#include <iostream>
#include <vigra/multi_array.hxx>
#include <vigra/stdimage.hxx>
#include <vigra/impex.hxx>
using namespace vigra;
int main(int argc, char ** argv)
{
if(argc != 3)
{
std::cout << "Usage: " << argv[0] << " infile outfile" << std::endl;
std::cout << "(grayscale only, supported formats: " << impexListFormats() << ")" << std::endl;
return 1;
}
try
{
char * in_filename = argv[1];
char * out_filename = argv[2];
// read image header information from in_filename
ImageImportInfo imageInfo(in_filename);
// instantiate array for image data
MultiArray<2, UInt8> imageArray(imageInfo. shape());
// copy image data from file into array
importImage(imageInfo, imageArray);
// if you don't need the information from ImageImportInfo, you can also
// simply pass the filename (this will resize imageArray internally!)
importImage(in_filename, imageArray);
// set every second horizontal line to black
for (int i = 0; i<imageInfo. height(); i+=2)
{
imageArray.bind<1>(i) = 0;
}
// write image data to the file given as second argument
exportImage(imageArray, ImageExportInfo(out_filename));
}
catch (std::exception & e)
{
// catch any errors that might have occurred and print their reason
std::cout << e.what() << std::endl;
return 1;
}
return 0;
}

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany | html generated using doxygen and Python vigra 1.10.0 (Mon Nov 18 2013)