多通道矩阵的分离与聚合

 

 

#include<opencv2/opencv.hpp>  
#include<iostream>  
#include<cassert>  
#include<vector>  
#include<stdio.h>
#include <sys/time.h>

using namespace cv;  
using namespace std; 

int main(int argc, char** argv)
{
    Mat srcImage=imread(argv[1], CV_LOAD_IMAGE_COLOR);  
    printf("srcImage-data address:%p\n", srcImage.data);
    Mat m = srcImage.clone(); 
    printf("m-data address:%p\n", m.data);
    cout << "m.depth:" << m.depth() << endl;
    cout << "m.type:" << m.type() << "-" << CV_8UC3 << endl;

    Mat m_64;
    m.convertTo(m_64, CV_64FC3);
    printf("m_64-data address:%p\n", m_64.data);
    cout << "m_64.depth:" << m_64.depth() << endl;
    cout << "m_64.type:" << m_64.type() <<"-" << CV_64FC3 << endl;

    Mat m_8;
    m_64.convertTo(m_8, CV_8UC3);
    printf("m_8-data address:%p\n", m_8.data);
    cout << "m_8.depth:" << m_8.depth() << endl;
    cout << "m_8.type:" << m_8.type() <<"-" << CV_8UC3 << endl;

    //cout << m_64 << endl;
    cout << m_8 << endl;


    //result：convertTo转换data会存储在新的地方
    //srcImage-data address:0x7fa6ac1bb020
        //m-data address:0x7fa6ac0fa020
        //m.depth:0
        //m.type:16-16
        //m_64-data address:0x7fa69dcba020
        //m_64.depth:6
        //m_64.type:22-22
        //m_8-data address:0x7fa69dbf9020
        //m_8.depth:0
        //m_8.type:16-16

    vector<Mat> channels;
    Mat imageBlue,imageGreen,imageRed;
    Mat mergeImage;

    split(m, channels);  
    imageBlue = channels.at(0);  

    for (int i = 0; i < imageBlue.rows; i++)
        for (int j = 0; j < imageBlue.cols; j++)
        {
            imageBlue.at<uchar>(i, j) = i;
        }

    imageGreen = channels.at(1);  
    imageRed = channels.at(2);  
    merge(channels, m);  

    //result:67     //m-data address:0x7f8058621020

    //cout << srcImage << endl;
    //cout << m << endl;
    //cout << mergeImage << endl;
    cout << endl;

    return 0;
}