90 lines
3.4 KiB
C++
90 lines
3.4 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2014, Itseez Inc, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Itseez Inc or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "opencv2/datasets/or_mnist.hpp"
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#include <opencv2/core.hpp>
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#include <opencv2/imgcodecs.hpp>
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#include <cstdio>
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#include <string>
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#include <vector>
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using namespace std;
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using namespace cv;
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using namespace cv::datasets;
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int main(int argc, char *argv[])
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{
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const char *keys =
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"{ help h usage ? | | show this message }"
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"{ path p |true| path to dataset }";
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CommandLineParser parser(argc, argv, keys);
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string path(parser.get<string>("path"));
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if (parser.has("help") || path=="true")
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{
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parser.printMessage();
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return -1;
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}
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Ptr<OR_mnist> dataset = OR_mnist::create();
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dataset->load(path);
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// ***************
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// dataset contains for each object its image and label.
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// For example, let output train & test sizes and their first elements.
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printf("train size: %u\n", (unsigned int)dataset->getTrain().size());
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printf("test size: %u\n", (unsigned int)dataset->getTest().size());
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OR_mnistObj *example = static_cast<OR_mnistObj *>(dataset->getTrain()[0].get());
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printf("first train:\nlabel: %u\n", example->label);
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printf("image was saved to train0.png\n");
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imwrite("train0.png", example->image);
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example = static_cast<OR_mnistObj *>(dataset->getTest()[0].get());
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printf("first test:\nlabel: %u\n", example->label);
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printf("image was saved to test0.png\n");
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imwrite("test0.png", example->image);
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return 0;
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}
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