Figure 1: Warby Parker's virtual glasses fitting setup. 11. [5 points] To help Warby Parker automatically compute a client's eye dimensions and the distance between the pupils, they ask them to take a picture of their face with a credit card right below their nose resting on their mouth, see Fig. 1. ONLY the dimensions of the credit card are assumed to be known. Using the perspective projection equations, describe how one can recover the inter-pupil distance