如何将已经写入xml文件的OpenCV Mat转换回图像？ [英] How to convert an OpenCV Mat that has been written in an xml file back into an image?

问题描述

我写了一些代码来生成一个.xml文件，其中包含来自OpenCV中Mat文件的RGB数据。我想在MATLAB中从xml文件中的数据点重新创建此图像。我不知道xml文件的格式，因为当我打开它看起来像这样：

 <？ xml version =1.0？> 
< opencv_storage> 
< myMatrix type_id =opencv-matrix> 
< rows> 116< / rows> 
< ; cols> 116< / cols> 
< dt> u< / dt> 
< data> 
 97 101 97 98 99 97 ... 
< / data> ; 
< / myMatrix> 
< / opencv_storage> 
  

使用Filestorage读取它：

  Mat m; 
 Filestorage fs（m.xml，Filestorage :: READ）; 
 fs [myMatrix]> m; 
  

然后以matlab格式输出（或写入文件）：

  // 2.4版本
 cerr<<< format（m，MATLAB）<< endl; 
 // 3.0版本
 cerr<<< format（m，cv :: Formatter :: FMT_MATLAB）< endl 
  

I wrote some code to generate an .xml file that contains the RGB data from a Mat file in OpenCV. I would like to recreate this image in MATLAB from the data points in the xml file. I am however unsure of the formatting of the xml file, since when I open it it looks something like this:

<?xml version="1.0?>
<opencv_storage>
<myMatrix type_id="opencv-matrix">
    <rows>116</rows>
    <cols>116</cols>
    <dt>u</dt>
    <data>
      97 101 97 98 99 97 ...
    </data>
    </myMatrix>
    </opencv_storage>

解决方案

you can convert it to matlab format within opencv.

read it in using the Filestorage:

Mat m;
Filestorage fs("m.xml", Filestorage::READ);
fs["myMatrix"] >> m;

then print it out (or write to a file) in matlab format:

// 2.4 version
cerr << format(m,"MATLAB") << endl;
// 3.0 version
cerr << format(m,cv::Formatter::FMT_MATLAB) << endl;

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