about confidence map

I have a question about the depth confidence map, why are the values in confidence map greater than 1, Is there any operation on the confidence map, like log or exp, I don;t find the operation in paper. waiting for your reply

Start with the confidence-map question and the paper referenced in the issue. No file, test, or entry point is named; clarify the expected documentation outcome and identify where confidence-map values are described before defining what done means.

Written by the indexing model from the issue text.