opencv从txt文本读取像素点并显示

opencv从txt文本读取像素点并显示

文本储存格式为每行一个像素点，排列为RGB。每帧图像的帧头为65535.  如下图所示

废话不多说，代码如下：

//
#include <iostream>
#include <opencv2\opencv.hpp>
#include <fstream>
#include <string>
#include <WINSOCK2.H>
#include <STDIO.H>

#define MAX 32
using namespace cv;
using namespace std;

Vec3b GetPoint( void )
{
    Vec3b pixels; //声明像素点储存变量//static int64 count = 0;cout<<count++<<endl;
    char Buf[MAX];//声明一个buf，用来储存一行
    //声明三个空格，用于分割像素点
    int firstspace = ; int secondspace = ; int thirdspace = ;
    //读取一行数据
    cin.getline(Buf,MAX);
    //如果读到的是个回车或者换行，则继续读
    while(Buf[] == '\0'||Buf[] == ' ' ) cin.getline(Buf,MAX);
    //遍历整个buf，找到三个空格的位置
    for(int i =  ;i < MAX ;i ++ )
    {
        if(Buf[i] == ' ')
        {
            if(firstspace  !=  && secondspace !=  && thirdspace ==) thirdspace =i;
            if(firstspace  !=  && secondspace == )  secondspace = i;
            if(firstspace  == ) firstspace  = i;

        }

    }
    //将三个空格之间的像素点解码储存
    for(int i = ; i < firstspace; i++)              {  pixels[] += (Buf[i] - )*pow(,firstspace--i);   }
    for(int i = firstspace+; i < secondspace; i++)  {  pixels[] += (Buf[i] - )*pow(,secondspace--i);   }
    for(int i = secondspace+; i < thirdspace; i++)  {  pixels[] += (Buf[i] - )*pow(,thirdspace--i);   }
    //抛出这个像素点
    return pixels;
}

int main(int argc, char* argv[])
{
    //首先定义一个图像buf，并初始化为0 ，此处一定要初始化图像大小和通道数，否则迭代器无法使用
    Mat ReceiveImage = Mat::zeros(,,CV_8UC3);
    //声名一个窗口用于显示
    namedWindow("picture");
    //声明buf，用于缓冲入的储存单个字符
    char  ReadBuf;
    //声明帧头判断标志位
    int flag = ;
    //输入流重定向，将输入流定向到相应文件，定向错误则退出
    if(freopen("rgb.txt","r", stdin) == NULL )   {  fprintf(stderr,"open error"); return -;}
    //进入循环读图模式
        while()
        {    //帧头判断
            if(flag != )
            {
                cin>>ReadBuf;
                if(ReadBuf == '' && flag == )  flag = ;
                else if(ReadBuf == '' && flag == )  flag = ;
                else if(ReadBuf == '' && flag == )  flag = ;
                else if(ReadBuf == '' && flag == )  flag = ;
                else if(ReadBuf == '' && flag == )  flag = ;
                else  flag = ;
            }else{                                    flag = ;
                  //迭代器读图储存
                 Mat_<Vec3b>::iterator itbeg = ReceiveImage.begin<Vec3b>() ;
                 Mat_<Vec3b>::iterator itend = ReceiveImage.end<Vec3b>()   ;
                 for( ;itbeg != itend ;itbeg++ )
                 {         *itbeg = GetPoint();   }
                 imshow("picture",ReceiveImage);
                  waitKey();
            }
        }
    return ;
}