added first version of hpe_humaneva dataset loader

modules/datasets/include/opencv2/datasets/hpe_humaneva.hpp

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+
+#ifndef OPENCV_DATASETS_HPE_HUMANEVA_HPP
+#define OPENCV_DATASETS_HPE_HUMANEVA_HPP
+
+#include <string>
+#include <vector>
+
+#include "opencv2/datasets/dataset.hpp"
+
+#include <opencv2/core.hpp>
+
+namespace cv
+{
+namespace datasets
+{
+
+struct HPE_humanevaObj : public Object
+{
+    char person; // 1..4
+    std::string action;
+    int type1;
+    std::string type2;
+    Matx13d ofs;
+    std::string fileName;
+    std::vector<std::string> imageNames; // for HumanEva_II
+};
+
+enum datasetType
+{
+    humaneva_1 = 1,
+    humaneva_2
+};
+
+class CV_EXPORTS HPE_humaneva : public Dataset
+{
+public:
+    virtual void load(const std::string &path) = 0;
+
+    static Ptr<HPE_humaneva> create(int num=humaneva_1);
+};
+
+}
+}
+
+#endif