opencv_contrib/modules/datasets/samples/pd_inria.cpp

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#include "opencv2/datasets/pd_inria.hpp"
#include <opencv2/core.hpp>

#include <iostream>
#include <string>
#include <vector>

using namespace std;
using namespace cv;
using namespace cv::datasets;

int main(int argc, char *argv[])
{
    const char *keys =
            "{ help h usage ? |    | show this message }"
            "{ path p         |true| path to dataset }";
    CommandLineParser parser(argc, argv, keys);
    string path(parser.get<string>("path"));
    if (parser.has("help") || path=="true")
    {
        parser.printMessage();
        return -1;
    }

    Ptr<PD_inria> dataset = PD_inria::create();
    dataset->load(path);

    cout << "train size: " << (unsigned int)dataset->getTrain().size() << endl;

    PD_inriaObj *example = static_cast<PD_inriaObj *>(dataset->getTrain()[0].get());
    cout << "first train object: " << endl;
    cout << "name: " << example->filename << endl;
    
    // image size
    cout << "image size: " << endl;
    cout << "  - width: " << example->width << endl;
    cout << "  - height: " << example->height << endl;
    cout << "  - depth: " << example->depth << endl;

    // bounding boxes
    for (unsigned int i = 0; i < (example->bndboxes).size(); i++)
    {
        cout << "object " << i << endl;
        int x = (example->bndboxes)[i].x;
        int y = (example->bndboxes)[i].y;
        cout << "  - xmin = " << x  << endl;
        cout << "  - ymin = " << y << endl;
        cout << "  - xmax = " << (example->bndboxes)[i].width + x << endl;
        cout << "  - ymax = " << (example->bndboxes)[i].height + y<< endl;
    }

    return 0;
}