Function test_1

dlib/test/object_detector.cpp:437–476

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

    void test_1 (
    )
    {        
        print_spinner();
        dlog << LINFO << "test_1()";

        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 hashed_feature_image<hog_image<3,3,1,4,hog_signed_gradient,hog_full_interpolation> > feature_extractor_type;
        typedef scan_image_pyramid<pyramid_down<2>, feature_extractor_type> image_scanner_type;
        image_scanner_type scanner;
        const rectangle object_box = compute_box_dimensions(1,35*35);
        scanner.add_detection_template(object_box, create_grid_detection_template(object_box,2,2));
        setup_hashed_features(scanner, images, 9);
        use_uniform_feature_weights(scanner);
        structural_object_detection_trainer<image_scanner_type> trainer(scanner);
        trainer.set_num_threads(4);  
        trainer.set_overlap_tester(test_box_overlap(0,0));
        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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