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

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#include "opencv2/datasets/or_sun.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 (SUN397 folder) }";
    CommandLineParser parser(argc, argv, keys);
    string path(parser.get<string>("path"));
    if (parser.has("help") || path=="true")
    {
        parser.printMessage();
        return -1;
    }

    Ptr<OR_sun> dataset = OR_sun::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());

    OR_sunObj *example = static_cast<OR_sunObj *>(dataset->getTrain().back().get());
    printf("last image:\nname: %s\n", example->name.c_str());
    printf("label: %u\n", example->label);
    printf("label path: %s\n", dataset->paths[example->label].c_str());

    return 0;
}