#include <fstream>
#include <iostream>
#include <opencv2/opencv.hpp>
#include <vector>

int main()
{
    // 图像文件路径
    std::string filename = "/media/dingxin/data/study/OpenCV/sources/images/hawk.jpg";

    // 读取图像文件到内存缓冲区
    std::ifstream file( filename, std::ios::binary );
    if ( !file.is_open() )
    {
        std::cout << "Failed to open file." << std::endl;
        return -1;
    }

    std::vector< unsigned char > buffer( ( std::istreambuf_iterator< char >( file ) ), std::istreambuf_iterator< char >() );
    file.close();

    // 使用 cv::imdecode 解码图像数据
    cv::Mat img = cv::imdecode( buffer, cv::IMREAD_COLOR );

    if ( img.empty() )
    {
        std::cout << "Failed to decode image data." << std::endl;
        return -1;
    }

    // 显示图像
    cv::imshow( "Decoded Image", img );
    cv::waitKey( 0 );

    return 0;
}