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97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/**************************************************************************************
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The structured forests for fast edge detection demo requires you to provide a model.
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This model can be found at the opencv_extra repository on Github on the following link:
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https://github.com/opencv/opencv_extra/blob/master/testdata/cv/ximgproc/model.yml.gz
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***************************************************************************************/
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#include <opencv2/ximgproc.hpp>
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#include "opencv2/highgui.hpp"
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#include <iostream>
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using namespace cv;
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using namespace cv::ximgproc;
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const char* keys =
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{
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"{i || input image file name}"
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"{m || model file name}"
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"{o || output image file name}"
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};
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int main( int argc, const char** argv )
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{
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CommandLineParser parser(argc, argv, keys);
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parser.about("This sample demonstrates usage of structured forests for fast edge detection");
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parser.printMessage();
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if ( !parser.check() )
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{
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parser.printErrors();
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return -1;
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}
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String modelFilename = parser.get<String>("m");
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String inFilename = parser.get<String>("i");
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String outFilename = parser.get<String>("o");
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//! [imread]
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Mat image = imread(inFilename, IMREAD_COLOR);
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if ( image.empty() )
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CV_Error(Error::StsError, String("Cannot read image file: ") + inFilename);
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//! [imread]
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if ( modelFilename.size() == 0)
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CV_Error(Error::StsError, String("Empty model name"));
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//! [convert]
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image.convertTo(image, DataType<float>::type, 1/255.0);
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//! [convert]
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TickMeter tm;
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tm.start();
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//! [create]
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Ptr<StructuredEdgeDetection> pDollar =
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createStructuredEdgeDetection(modelFilename);
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//! [create]
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tm.stop();
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std::cout << "createStructuredEdgeDetection() time : " << tm << std::endl;
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tm.reset();
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tm.start();
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//! [detect]
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Mat edges;
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pDollar->detectEdges(image, edges);
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//! [detect]
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tm.stop();
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std::cout << "detectEdges() time : " << tm << std::endl;
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tm.reset();
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tm.start();
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//! [nms]
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// computes orientation from edge map
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Mat orientation_map;
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pDollar->computeOrientation(edges, orientation_map);
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// suppress edges
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Mat edge_nms;
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pDollar->edgesNms(edges, orientation_map, edge_nms, 2, 0, 1, true);
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//! [nms]
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tm.stop();
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std::cout << "nms time : " << tm << std::endl;
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//! [imshow]
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if ( outFilename.size() == 0 )
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{
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imshow("edges", edges);
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imshow("edges nms", edge_nms);
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waitKey(0);
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}
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else
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imwrite(outFilename, 255*edges);
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//! [imshow]
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return 0;
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}
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