c++ - Issue with imread. Strange float values -

i'm trying simple load image (tiff) , display pixel value.

if open image using imagej values 32-bit float. opening same image using opencv strange float values, e.g. 4.2039e-44.

if read value of specific pixel using "int" presented value correct. below code use test. , here link image: https://goo.gl/wmv9xe.

thanks in advance.

#include <opencv2/highgui/highgui.hpp> #include <opencv2/core/core.hpp> #include <iostream>  int main(int argc, char **argv) {     std::string imagefile = "image.tiff";      cv::mat image;     image = cv::imread(imagefile, cv_load_image_anydepth);   // read file      if (!image.data)                              // check invalid input     {         std::cout << "could not open or find image: " << imagefile << std::endl;         return -1;     }     std::cout << "image:" << image.rows << " x " << image.cols << " channels: " << image.channels() << " depth: " << image.depth() << std::endl;     std::cout << "value @ 0,0: " << image.at<float>(0,1)<< std::endl; // strange value     std::cout << "value @ 0,0: " << image.at<int>(0,1)<< std::endl; // correct value      return (exit_success); } 

* update *

trying move forward code, decided create function convert data "int" reading file. temporary solution worked, i'm still looking reason why data being loaded wrong.

int main(int argc, char **argv) {     std::string imagefile = "/home/slepicka/xsconfig/image.tiff";      cv::mat image = openimage(imagefile);      if (!image.data)                              // check invalid input     {         std::cout << "could not open or find image: " << imagefile << std::endl;         return -1;     }      std::cout << "image:" << image.rows << " x " << image.cols << " channels: " << image.channels() << " depth: " << image.depth() << " type: " << image.type() << std::endl;     std::cout << "value @ 0,0: " << image.at<int>(0,1)<< std::endl; // correct value     //std::cout << "data: " << image << std::endl;     return (exit_success); }  cv::mat openimage(std::string filename){     cv::mat imageload = cv::imread(filename, cv_load_image_anydepth);      if(imageload.type() == cv_32f){         return converttoint(imageload);     }      return imageload;  }  cv::mat converttoint(cv::mat source){     int r, c;     cv::mat converted;      converted.create(source.rows, source.cols, cv_32sc1);      (r=0; r<source.rows;r++) {         (c=0; c<source.cols;c++) {             converted.at<int>(r, c) = source.at<int>(r, c);         }     }     return converted; }