title: Imread & argv image location?
body: <p>I am new to coding in C++ and am currently working on an application that can clear all objects out of a picture except for the biggest one. I was looking on doing object size detection based on the bounding boxes tutorial I found <a href="http://docs.opencv.org/doc/tutorials/imgproc/shapedescriptors/bounding_rects_circles/bounding_rects_circles.html" rel="nofollow" title="Bounding boxes and circles for contours">here</a></p>
  
  <p>But this code contains one line using the imread function and then an array to specify the path to the image</p>
  
  <pre><code>/// Load source image and convert it to gray
  src = imread( argv[1], 1 );
  </code></pre>
  
  <p>How is it that argv[1] can be used in this situation to point out where the image is sourced from? I thought argv &amp; argc had to do with the number of command lines that are called? Any information?</p>
  
  <p>As stated earlier I am new to c++ so sorry if this is a silly question.
  Thanks in advance</p>