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Measure boundary and corner strengths with the boundaryTensor(): boundarytensor.cxx
Usage: boundarytensor infile
, creates boundarystrength.tif
and cornerstrength.tif
/************************************************************************/ /* */ /* Copyright 1998-2004 by Ullrich Koethe */ /* */ /* This file is part of the VIGRA computer vision library. */ /* The VIGRA Website is */ /* http://hci.iwr.uni-heidelberg.de/vigra/ */ /* Please direct questions, bug reports, and contributions to */ /* ullrich.koethe@iwr.uni-heidelberg.de or */ /* vigra@informatik.uni-hamburg.de */ /* */ /* Permission is hereby granted, free of charge, to any person */ /* obtaining a copy of this software and associated documentation */ /* files (the "Software"), to deal in the Software without */ /* restriction, including without limitation the rights to use, */ /* copy, modify, merge, publish, distribute, sublicense, and/or */ /* sell copies of the Software, and to permit persons to whom the */ /* Software is furnished to do so, subject to the following */ /* conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the */ /* Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES */ /* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND */ /* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT */ /* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, */ /* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING */ /* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR */ /* OTHER DEALINGS IN THE SOFTWARE. */ /* */ /************************************************************************/ #include <iostream> #include <functional> #include "vigra/stdimage.hxx" #include "vigra/combineimages.hxx" #include "vigra/tensorutilities.hxx" #include "vigra/boundarytensor.hxx" #include "vigra/impex.hxx" using namespace vigra; int main(int argc, char ** argv) { if(argc != 2) { std::cout << "Usage: " << argv[0] << " infile" << std::endl; std::cout << "(supported formats: " << impexListFormats() << ")" << std::endl; std::cout << "creates: boundarystrength.tif, cornerstrength.tif" << std::endl; return 1; } try { ImageImportInfo info(argv[1]); int w = info.width(), h = info.height(); // create image of appropriate size for boundary tensor FVector3Image boundarytensor(w, h); // input scale of the bandpass to be used double scale; std::cout << "Operator scale ? "; std::cin >> scale; if(info.isGrayscale()) { FImage in(w, h); importImage(info, destImage(in)); boundaryTensor(srcImageRange(in), destImage(boundarytensor), scale); } else if(info.isColor()) { FRGBImage in(w, h); importImage(info, destImage(in)); // calculate the boundary tensor for every channel and add the results FVector3Image bandtensor(w, h); for(int b=0; b<3; ++b) { VectorElementAccessor<FRGBImage::Accessor> band(b); boundaryTensor(srcImageRange(in, band), destImage(bandtensor), scale); combineTwoImages(srcImageRange(boundarytensor), srcImage(bandtensor), destImage(boundarytensor), std::plus<FVector3Image::value_type>()); } } else { std::cerr << "Sorry, can only operate on gray and color images.\n"; return 1; } FImage boundarystrength(w, h), cornerness(w, h); FVector2Image edgeness(w,h); tensorTrace(srcImageRange(boundarytensor), destImage(boundarystrength)); tensorToEdgeCorner(srcImageRange(boundarytensor), destImage(edgeness), destImage(cornerness)); exportImage(srcImageRange(boundarystrength), ImageExportInfo("boundarystrength.tif").setPixelType("UINT8")); exportImage(srcImageRange(cornerness), ImageExportInfo("cornerstrength.tif").setPixelType("UINT8")); } catch (std::exception & e) { std::cout << e.what() << std::endl; return 1; } return 0; }
© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) |
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