title: Reading image from sdcard returning null opencv
body: <p>i am trying to read images from SDCARD using c++ opencv method, but its returning no image,</p>
  
  <p>stich.cpp
      Mat img = imread("/storage/emulated/0/panoTmpImage/im" + id + ".jpeg");</p>
  
  <p>i try this path too but its not working <code>/storage/sdcard0/panoTmpImages/im"+id+".jpeg"</code></p>
  
  <p><strong>Edit</strong>
  this method work perfectly , i dont know why imread is not reading iamges.thanks for help
          Mat img4 = cvLoadImage("/storage/sdcard0/panoTmpImage/im3.jpeg",1);</p>
  
  <p>thanks </p>