title: How to compute reliability coefficient for a count things app?
body: <p>I am currently trying to make an application that can count some objects in a container from a photo. I thought to include a reliability coefficient (trustworthiness) to alert if the photo and the output is clear or not, to give recommendations to change the input photo and then improve its output.</p>
  <p>Naively, I thought of including some paramters (to specify whether the photo is clear or not)
  like :</p>
  <p>** The angle of the photo</p>
  <p>** The distance since the photo was taken</p>
  <p>** The brightness of the photo, the resolution etc.</p>
  <p>Naively, each parameter will be between 0 and 1 and I will multiply all those parameters together to compute the reliability coefficient.</p>
  <p>But when I quickly search for this coefficient, I found A LOT of things, like in statistics etc. And it scares me because I don't understand much about it and I don't have all the skills to understand it.</p>
  <p>I just thought that a simple mathematical formula will be good, without using a statistical forumula...</p>
  <p>Can you PLEASE help to understand how to compute such a coefficient ? Which formula I should use PLEASE ?</p>
  <p>Thanks in advance !</p>