opencv的C++实现将图片二值化后提取像素信息保存至txt文档中，再从txt文档中读取图片像素信息恢复成灰度图并保存

#include <opencv2/opencv.hpp>
#include
#include
using namespace std;
using namespace cv;

int main()
{
//将图片二值化后提取像素信息保存至txt文档中

string filename = "path.png";//图片路径 Mat src = imread(filename);  cvtColor(src, src, CV_BGR2GRAY); imshow("原图", src); fstream file("path.txt", ios::out);//保存像素信息的txt文本路径 stringstream ss; string data0; for (int nrows = 0; nrows < src.rows; nrows++)  { 	for (int ncols = 0; ncols < src.cols; ncols++)  	{ 		int gray = src.at<uchar>(nrows, ncols); 		ss << hex << gray; 		ss >> data0;         ss.clear(); 		file << data0 << " "; 		 	} 	file << endl;  } file.close();				 //从txt文档中读取图片像素信息恢复成灰度图并保存 fstream fileread; fileread.open("path.txt");//保存像素信息的txt文本路径 Mat dataread = Mat::zeros(src.rows, src.cols, CV_8UC1); string data; uchar idata; int data1; for (int i = 0; i < src.rows; i++) { 	for (int j = 0; j < src.cols; j++) 	{ 		fileread >> data; 		ss << data; 		ss >>data1; 		ss.clear(); 		idata = (uchar)data1; 		dataread.at<uchar>(i, j)= idata; 	} } fileread.close();			 imshow("重构", dataread); imwrite("path.jpg", dataread);//保存从txt文本中重新生成的灰度图的路径  waitKey(0); return 0; 

}

文章来源: https://blog.csdn.net/weixin_44734885/article/details/89789469