I apologize if the question is trivial, I'm a novice in the field. I want to do experiments on a custom dataset. I understand from https://github.com/Fyusion/LLFF#using-your-own-poses-without-running-colmap how to fill up the 1x17 vector with the required values up to the 15th entry, but I'm having trouble figuring out how to obtain the last two numbers, i.e. close/far depth values. How can I calculate or obtain those two last values? Thanks in advance