Descriptor DominantColor::extract_(MyImage *image, bool makeVisRep, Magick::Image *repr){ cv::Mat &img = *image->getOpenCVMat(); Frame* frame = new Frame(img); XM::DominantColorDescriptor *dcd = Mpeg7Feature::getDominantColorD( frame , false ); // don't normalize size_t nColors = dcd->GetDominantColorsNumber(); XM::DOMCOL *colors = dcd->GetDominantColors(); cout << "we've got: " << nColors << " dominant colors" << endl; Descriptor desc; for(size_t i = 0; i < nColors; ++i){ cout << "color " << i << " percentage: " << colors[i].m_Percentage; for(size_t j = 0; j < 3; ++j){ cout << " " << j << " " << colors[i].m_ColorValue[j]; desc.push_back((float) colors[i].m_ColorValue[j]); } // for j cout << endl; } // for i desc.resize(24, 0.0); return desc; }