Function test_3_boxes

dlib/test/object_detector.cpp:951–994

make sure everything works even when the image isn't a dlib::array2d. So test with funny_image.

    // make sure everything works even when the image isn't a dlib::array2d.
    // So test with funny_image.
    void test_3_boxes (
    )
    {        
        print_spinner();
        dlog << LINFO << "test_3_boxes()";


        typedef dlib::array<array2d<unsigned char> >  grayscale_image_array_type;
        typedef dlib::array<funny_image>  funny_image_array_type;
        grayscale_image_array_type images_temp;
        funny_image_array_type images;
        std::vector<std::vector<rectangle> > object_locations;
        make_simple_test_data(images_temp, object_locations);
        images.resize(images_temp.size());
        for (unsigned long i = 0; i < images_temp.size(); ++i)
        {
            images[i].img.swap(images_temp[i]);
        }

        typedef scan_image_boxes<very_simple_feature_extractor, funny_box_generator> image_scanner_type;
        image_scanner_type scanner;
        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);

        res = cross_validate_object_detection_trainer(trainer, images, object_locations, 3);
        dlog << LINFO << "3-fold cross validation (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);
        }
    }

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