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

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

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

    // ***************
    // dataset contains for each split: a set of video file names for each action.
    // For example, let output all training video file names for second split and first action.
    // And its size.
    int numSplits = dataset->getNumSplits();
    printf("splits number: %u\n", numSplits);
    printf("train 1 size: %u\n", (unsigned int)dataset->getTrain(1).size());
    printf("test 1 size: %u\n", (unsigned int)dataset->getTest(1).size());

    AR_hmdbObj *example = static_cast<AR_hmdbObj *>(dataset->getTrain(1)[0].get());
    printf("first image:\n");
    printf("action id: %u\n", example->id);
    printf("action: %s\n", example->name.c_str());
    printf("file: %s\n", example->videoName.c_str());

    return 0;
}