opencv rgb plannar 读取 转 rgb888保存

#include <fstream>

#include <iostream>

#include <opencv2/imgcodecs.hpp>

#include <opencv2/opencv.hpp>

using namespace cv;

using namespace std;

int main(int argc, char **argv)

{

    const uint32_t cols = 24;

    const uint32_t rows = 24;

    ifstream fin0("00135461.plannar", ios::in | ios::binary);

    if(!fin0.is_open())

    {

        cout << "open fail!\n";

        return 1;

    }

    Mat img0_r = Mat::zeros(rows, cols, CV_8UC1);

    Mat img0_g = Mat::zeros(rows, cols, CV_8UC1);

    Mat img0_b = Mat::zeros(rows, cols, CV_8UC1);

    fin0.read(&img0_r.at< char >(0, 0), sizeof(char) * rows * cols);

    fin0.read(&img0_g.at< char >(0, 0), sizeof(char) * rows * cols);

    fin0.read(&img0_b.at< char >(0, 0), sizeof(char) * rows * cols);

    fin0.close();

    Mat channels[3] = { img0_b, img0_g, img0_r };

    Mat img0;

    merge(channels, 3, img0);

    imwrite("out2.jpg", img0);

    ofstream fout0("out2.img", ios::out | ios::binary);

    Mat      imgRGB;

    cvtColor(img0, imgRGB, COLOR_BGR2RGB);

    fout0.write(&imgRGB.at< char >(0, 0), sizeof(char) * rows * cols * 3);

    fout0.close();

    return 0;

}