Hi!
Using OpenCV 3.0 and Visual Studio Professional 2013
I'm facing difficulty in reading a readable text file, generated by MATLAB, in OpenCV. The text file contains signed floating point numbers. One number on each line and total number of lines are 2241 but there is just single column. I want to read this data in to a matrix with just one column and 2241 rows.
But..
The debugger says this next to fstream in watch window: "Error reading characters of string"
*#include <iostream>
*#include <fstream>
*#include "opencv2/imgcodecs.hpp"
*#include "opencv2/highgui.hpp"
*#include "opencv2/stitching.hpp"
using namespace std;
using namespace cv;
bool try_use_gpu = false;
vector<Mat> imgs;
string result_name = "result.jpg";
void printUsage();
int parseCmdArgs(int argc, char** argv);
Mat ReadMatFromTxt(string filename);
int main(int argc, char* argv[])
{
string filename = "P:\\Thesis Implementation\\main_CC++\\My Stitching\\build\\training_filter_ma.txt";
Mat out = ReadMatFromTxt(filename);
waitKey();
return 0;
}
Mat ReadMatFromTxt(string filename)
{
double m;
ifstream fileStream(filename.c_str(), ifstream::in);
if (!fileStream) {
string error_message = "No valid input file was given, please check the given filename.";
CV_Error(Error::StsBadArg, error_message);
}
int rows = 1;
char enterChar;
int numOfLines_InTextFile = 0;
while (fileStream.get(enterChar)) {
if (enterChar == '\n') {
++numOfLines_InTextFile;
}
}
int cols = numOfLines_InTextFile;
Mat out = Mat::zeros(rows, cols, CV_64FC1);//Matrix to store values
int cnt = 0;//index starts from 0
while (fileStream >> m)
{
int temprow = cnt / cols;
int tempcol = cnt % cols;
out.at<double>(temprow, tempcol) = m;
cnt++;
}
fileStream.close();
return out;
}