OpenCV_4.2.0/opencv_contrib-4.2.0/modules/datasets/samples/or_sun.cpp

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
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// License Agreement
// For Open Source Computer Vision Library
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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;
}