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https://github.com/opencv/opencv.git
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105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
#include "opencv2/objdetect/objdetect.hpp"
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#include "opencv2/highgui/highgui.hpp"
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#include <stdio.h>
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#ifdef HAVE_CVCONFIG_H
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#include <cvconfig.h>
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#endif
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#ifdef HAVE_TBB
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#include "tbb/task_scheduler_init.h"
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#endif
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using namespace cv;
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void help()
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{
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printf( "This program demonstrated the use of the latentSVM detector.\n"
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"It reads in a trained object model and then uses that to detect the object in an image\n"
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"Call:\n"
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"./latentsvmdetect [<image_filename> <model_filename> [<threads_number>]]\n"
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" The defaults for image_filename and model_filename are cat.jpg and cat.xml respectively\n"
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" Press any key to quit.\n");
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}
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const char* model_filename = "cat.xml";
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const char* image_filename = "cat.jpg";
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int tbbNumThreads = -1;
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void detect_and_draw_objects( IplImage* image, CvLatentSvmDetector* detector, int numThreads = -1)
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{
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CvMemStorage* storage = cvCreateMemStorage(0);
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CvSeq* detections = 0;
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int i = 0;
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int64 start = 0, finish = 0;
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#ifdef HAVE_TBB
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tbb::task_scheduler_init init(tbb::task_scheduler_init::deferred);
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if (numThreads > 0)
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{
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init.initialize(numThreads);
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printf("Number of threads %i\n", numThreads);
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}
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else
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{
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printf("Number of threads is not correct for TBB version");
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return;
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}
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#endif
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start = cvGetTickCount();
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detections = cvLatentSvmDetectObjects(image, detector, storage, 0.5f, numThreads);
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finish = cvGetTickCount();
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printf("detection time = %.3f\n", (float)(finish - start) / (float)(cvGetTickFrequency() * 1000000.0));
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#ifdef HAVE_TBB
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init.terminate();
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#endif
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for( i = 0; i < detections->total; i++ )
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{
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CvObjectDetection detection = *(CvObjectDetection*)cvGetSeqElem( detections, i );
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CvRect bounding_box = detection.rect;
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cvRectangle( image, cvPoint(bounding_box.x, bounding_box.y),
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cvPoint(bounding_box.x + bounding_box.width,
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bounding_box.y + bounding_box.height),
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CV_RGB(255,0,0), 3 );
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}
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cvReleaseMemStorage( &storage );
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}
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int main(int argc, char* argv[])
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{
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help();
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if (argc > 2)
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{
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image_filename = argv[1];
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model_filename = argv[2];
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if (argc > 3)
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{
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tbbNumThreads = atoi(argv[3]);
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}
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}
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IplImage* image = cvLoadImage(image_filename);
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if (!image)
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{
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printf( "Unable to load the image\n"
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"Pass it as the first parameter: latentsvmdetect <path to cat.jpg> <path to cat.xml>\n" );
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return -1;
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}
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CvLatentSvmDetector* detector = cvLoadLatentSvmDetector(model_filename);
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if (!detector)
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{
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printf( "Unable to load the model\n"
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"Pass it as the second parameter: latentsvmdetect <path to cat.jpg> <path to cat.xml>\n" );
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cvReleaseImage( &image );
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return -1;
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}
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detect_and_draw_objects( image, detector, tbbNumThreads );
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cvNamedWindow( "test", 0 );
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cvShowImage( "test", image );
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cvWaitKey(0);
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cvReleaseLatentSvmDetector( &detector );
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cvReleaseImage( &image );
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cvDestroyAllWindows();
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return 0;
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}
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