Function test_1_poly_nn_boxes

dlib/test/object_detector.cpp:751–792

// ----------------------------------------------------------------------------------------

    void test_1_poly_nn_boxes (
    )
    {        
        print_spinner();
        dlog << LINFO << "test_1_poly_nn_boxes()";

        typedef dlib::array<array2d<unsigned char> >  grayscale_image_array_type;
        grayscale_image_array_type images;
        std::vector<std::vector<rectangle> > object_locations;
        make_simple_test_data(images, object_locations);

        typedef nearest_neighbor_feature_image<poly_image<5> > feature_extractor_type;
        typedef scan_image_boxes<feature_extractor_type> image_scanner_type;
        image_scanner_type scanner;

        feature_extractor_type nnfe;
        pyramid_down<2> pyr_down;
        poly_image<5> polyi;
        nnfe.set_basis(randomly_sample_image_features(images, pyr_down, polyi, 80));
        scanner.copy_configuration(nnfe);

        structural_object_detection_trainer<image_scanner_type> trainer(scanner);
        trainer.set_num_threads(4);  
        object_detector<image_scanner_type> detector = trainer.train(images, object_locations);

        matrix<double> res = test_object_detection_function(detector, images, object_locations);
        dlog << LINFO << "Test detector (precision,recall): " << res;
        DLIB_TEST(sum(res) == 3);

        {
            ostringstream sout;
            serialize(detector, sout);
            istringstream sin(sout.str());
            object_detector<image_scanner_type> d2;
            deserialize(d2, sin);
            matrix<double> res = test_object_detection_function(d2, images, object_locations);
            dlog << LINFO << "Test detector (precision,recall): " << res;
            DLIB_TEST(sum(res) == 3);

            validate_some_object_detector_stuff(images, detector);
        }
    }

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