opencv从txt文本读取像素点并显示

时间：2023-03-08 15:56:53
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 ;

}


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