博客

写入

void saveMatToFile(std::string filename, cv::Mat &image)
{
    std::ofstream fout1(filename, std::ios::binary | std::ios::trunc);
    for (int i = 0; i < image.rows; i++)
	{
		for (int j = 0; j < image.cols; j++)
		{
			fout1.write(reinterpret_cast<char*>(&image.at<float>(i, j)), sizeof(float));
		}
	}
	fout1.close();
}

读取

cv::Mat readMatFromFile(std::string filename,cv::Size size) 
{
    FILE* fp = fopen(filename.c_str(), "rb");
    cv::Mat flowU = cv::Mat::zeros(size, CV_32FC1);
    for (int i = 0; i < flowU.rows; i++)
    {
        for (int j = 0; j < flowU.cols ; j++)
        {
            fread(&flowU.at<float>(i, j), 1, sizeof(float), fp);
        }
    }
    fclose(fp);
    fp = NULL;
    return flowU;
}