title: How to calculate Real World Object Size?
body: <p>I am taking image from camera. So i want to get  object original  width and height.For that I am using UIImagePickerController.</p>
  
  <p>e.g If 15 inch monitor is placed on table.  so when I took image from camera  then i<br>
      want orginal size i.e. 15 inch. Does anyone have idea ? how can i achieve this ?. </p>
  
  <p><strong>EDIT</strong>
  I dont't want image size. I want actual object size....</p>
  
  <p><strong>EDIT 2</strong>
   I want this type of app:-<a href="https://itunes.apple.com/us/app/easymeasure-measure-your-camera!/id349530105?mt=8" rel="nofollow noreferrer">https://itunes.apple.com/us/app/easymeasure-measure-your-camera!/id349530105?mt=8</a></p>
  
  <p>Thanks In Advance....</p>