title: Detection Rate vs False Positives Per Image Curve
body: <p>I have been trying to understand how I can extract a <em>Detection Rate vs FPPI</em> curve as shown below, obtained from <em>Ref1</em>. </p>
  
  <p><img src="https://i.stack.imgur.com/x2Dwt.png" alt="enter image description here"></p>
  
  <p>In this paper they analyze their system before (RAW detector) and after applying tracking by showing the graph above. I would like to do the same for a tracking by detection approach (MATLAB) that I've used, however I am currently stuck on how this can be done. As a sidenote I will be evaluating my system over a set of image sequences <em>visually</em>. Can someone please offer some advice on how I can generate this curve please? Your help is much appreciated.</p>
  
  <p>Ref1: <a href="https://www.robots.ox.ac.uk/~vgg/publications/2014/Marin14/marin14.pdf" rel="nofollow noreferrer">Detecting People Looking at Each Other in Videos</a></p>