title: opencv for raw binary files
body: <p>I have a file that uses opencv to apply a bayer filter to an image to a black and white picture to give it RGB values.  It all works well when I run a 16 bit unsigned integer image through but then when I run a 8 bit unsigned integer I get the following error code:</p>
  
  <pre><code>OpenCV Error: Unspecified error (could not find a writer for the specified extension) in imwrite_, file /build/buildd/opencv-2.3.1/modules/highgui/src/loadsave.cpp, line 276
  terminate called after throwing an instance of 'cv::Exception'
    what():  /build/buildd/opencv-2.3.1/modules/highgui/src/loadsave.cpp:276: error: (-2) could not find a writer for the specified extension in function imwrite_
  </code></pre>
  
  <p>Do you know any plugin or extension I can download to deal with more image types?  I am running the program with the Ubuntu command line and the processing program is written in C++.  I did the initial processing to change it from 16bit unsigned integers with the python imaging library.</p>