Load numerated images from a folder using OpenCV

OpenCV_loadImages.cpp

void OpenCV_loadImages( const std::string &folder, const std::string &tag, const std::string format, std::vector<cv::Mat> &images ){
	images.clear();

	std::string fileName;
	int index = 1;
	while( true ){
		fileName = folder + "/" + tag + std::to_string( (long long) index) + "." + format;
		cv::Mat newImage = cv::imread( fileName );
		if( newImage.empty() ) break;
		images.push_back( newImage );
		++index;
	}
}