vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

2026-08-22 00:11:13 +08:00
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+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2014, Itseez Inc, all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Itseez Inc or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "opencv2/datasets/gr_chalearn.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 }";
+    CommandLineParser parser(argc, argv, keys);
+    string path(parser.get<string>("path"));
+    if (parser.has("help") || path=="true")
+    {
+        parser.printMessage();
+        return -1;
+    }
+
+    Ptr<GR_chalearn> dataset = GR_chalearn::create();
+    dataset->load(path);
+
+    // ***************
+    // dataset contains information for each sample.
+    // For example, let output dataset size and first element.
+    printf("train size: %u\n", (unsigned int)dataset->getTrain().size());
+    printf("validation size: %u\n", (unsigned int)dataset->getValidation().size());
+    GR_chalearnObj *example = static_cast<GR_chalearnObj *>(dataset->getTrain()[0].get());
+    printf("first dataset sample:\n%s\n", example->name.c_str());
+    printf("color video:\n%s\n", example->nameColor.c_str());
+    printf("depth video:\n%s\n", example->nameDepth.c_str());
+    printf("user video:\n%s\n", example->nameUser.c_str());
+    printf("video:\nnumber of frames: %u\nfps: %u\nmaximum depth: %u\n", example->numFrames, example->fps, example->depth);
+    for (vector<groundTruth>::iterator it=example->groundTruths.begin(); it!=example->groundTruths.end(); ++it)
+    {
+        printf("gestureID: %u, initial frame: %u, last frame: %u\n", (*it).gestureID, (*it).initialFrame, (*it).lastFrame);
+    }
+    printf("skeletons number: %u\n", (unsigned int)example->skeletons.size());
+    skeleton &last = example->skeletons.back();
+    printf("last skeleton:\n");
+    for (unsigned int i=0; i<20; ++i)
+    {
+        printf("Wx: %f, Wy: %f, Wz: %f, Rx: %f, Ry: %f, Rz: %f, Rw: %f, Px: %f, Py: %f\n",
+               last.s[i].Wx, last.s[i].Wy, last.s[i].Wz, last.s[i].Rx,
+               last.s[i].Ry, last.s[i].Rz, last.s[i].Rw, last.s[i].Px, last.s[i].Py);
+    }
+
+    return 0;
+}