title: How to calculate a specific distance inside of a picture?
body: <p>sorry for my bad english. I have the following problem:</p>
  
  <p><img src="https://i.stack.imgur.com/JQn6U.jpg" alt="1"></p>
  
  <p>Lets say the camera of my mobile device is showing this picture.</p>
  
  <p>In the picture you can see 4 different positions. Every position is known to me (longitude, latitude).</p>
  
  <p>Now i want to know, where in the picture a specific position is. For example, i want to have a rectangle 20 meters in front and 5 meters to the left of me. I just know the latitude/longitude of this point, but i don't know, where i have to place it inside of the picture (x,y). For example, POS3 is at (0,400) in my view. POS4 is at (600,400) and so on. </p>
  
  <p>Where do i have to put the new point, which is 20 meters in front and 5 meters to the left of me? (So my Input is: (LatXY,LonXY) and my result should be (x,y) on the screen)</p>
  
  <p>I also got the height of the camera and the angles of x,y and z - axis from the camera.</p>
  
  <p>Can i use simple mathematic operations to solve this problem?</p>
  
  <p>Thank you very much!</p>