Information about worldCoors.mat

Hi,
I was wondering what worldCoors  how they are made. I know links are not working and you no longer working in this repo.
I get to understand how headbox matlab is created but couldnt able to understand the logic of worldCoors.
if you able to recall what would worldCoors do with image, it would be very helpful for me to work on my project

Thanks and regards
sathish ram