title: Reading a test image with OpenCV under Android emulation
body: <p>I need to test native C++ code interfaced to an Android app (Java).</p>
  <p>Specifically, I want to call OpenCV's <code>imread</code> to load an image from a file. I have tried different approaches such as obtaining [what I think to be] the external path (PC emulation side) corresponding to the internal path (Android side), or dropping the file to the device, which seems to send it to /sdcard/Download, among other.</p>
  <p>In no case does <code>imread</code> succeed.</p>
  <p>What can I do ? Is this a matter of special path naming ? A matter of access protection ?</p>
  <p>Please note that I would like to find a solution that works straight from the C++ side if possible.</p>
  <hr />
  <p><strong>Update:</strong></p>
  <p>The problem is a Permission Denied. Strangely I can copy files to some folders, but can't read them (though I see no write-only modes) ! I have no idea how to fix that (needless to say, I have little means of interacting with the emulated device).</p>