CODEWITHSUNDEEP
c++opencv
Engine
Engine

Reputation: 5432

can't use cv::fileStorgae to save an XML file

I want to use cv::fileStorage to save the calibration result as an XML file like :

   cv::FileStorage fs = cv::FileStorage("calibration_result.xml",cv::FileStorage::FORMAT_XML||cv::FileStorage::WRITE);

this doesn't work but when I choose the ymlextension it works ? any idea why is that happening ? thanks in advance !

Upvotes: 0

Views: 304

Answers (1)

Andrey Smorodov
Andrey Smorodov

Reputation: 10850

Try the code below. It should work.

...
FileStorage fs("calibration_result.xml", FileStorage::WRITE);
Mat R = Mat_<uchar >::eye  (3, 3),
    T = Mat_<double>::zeros(3, 1);

fs << "R" << R;                                      // Write cv::Mat
fs << "T" << T;
fs.release(); 
...

I've tested it and it writes file with content:

<?xml version="1.0"?>
<opencv_storage>
<R type_id="opencv-matrix">
  <rows>3</rows>
  <cols>3</cols>
  <dt>u</dt>
  <data>
    1 0 0 0 1 0 0 0 1</data></R>
<T type_id="opencv-matrix">
  <rows>3</rows>
  <cols>1</cols>
  <dt>d</dt>
  <data>
    0. 0. 0.</data></T>
</opencv_storage>

Upvotes: 1

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