title: How to measure height and width of object using camera?
body: <p>I referred lot many links but still I am not able to get any point from that I can start my development. I want to measure my image height and width using camera. I found this app . I want to make this type of application not exactly same but quite same but for my requirement I want to measure my image height and width  using camera.</p>
  
  <p>I want to measure school bag height and width.</p>
  
  <p>Can anyone give me/suggest me the right way or any simple example code so that I can get more idea about this requirement.</p>