OpenCV/opencv_contrib/modules/datasets/samples/fr_adience.cpp

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#include "opencv2/datasets/fr_adience.hpp"

#include <opencv2/core.hpp>

#include <cstdio>

#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 folder and splits }";
    CommandLineParser parser(argc, argv, keys);
    string path(parser.get<string>("path"));
    if (parser.has("help") || path=="true")
    {
        parser.printMessage();
        return -1;
    }

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

    // ***************
    // dataset contains for each object its images.
    // For example, let output splits number, dataset size and last image.
    int numSplits = dataset->getNumSplits();
    printf("splits number: %u\n", numSplits);
    printf("dataset size: %u\n", (unsigned int)dataset->getTrain().size());

    FR_adienceObj *example = static_cast<FR_adienceObj *>(dataset->getTrain().back().get());
    printf("last image:\n");
    printf("user_id: %s\n", example->user_id.c_str());
    printf("original_image: %s\n", example->original_image.c_str());
    printf("face_id: %u\n", example->face_id);
    printf("age: %s\n", example->age.c_str());
    printf("gender: ");
    if (example->gender == male)
    {
        printf("m\n");
    } else
    if (example->gender == female)
    {
        printf("f\n");
    } else
    {
        printf("none\n");
    }
    printf("x: %u\n", example->x);
    printf("y: %u\n", example->y);
    printf("dx: %u\n", example->dx);
    printf("dy: %u\n", example->dy);
    printf("tilt_ang: %d\n", example->tilt_ang);
    printf("fiducial_yaw_angle: %d\n", example->fiducial_yaw_angle);
    printf("fiducial_score: %u\n", example->fiducial_score);

    return 0;
}