The issue of disparity to depth conversion

[xzzsmart]

Hi, thanks for your work. it is a greate work..
When I wanted to convert the disparity map into a depth map, using the formula Z=b * f/d, I found that the depth was not accurate. How can the disparity map be converted to depth? I tested the parallax of an object at a given distance and deduced the value of b * f. I found that this value would change, which does not comply with the formula. Is the value of the disparity map correct?
I really hope for your reply.

[HXB-1997]

I have met the same issue,too @zsc @