Guys, plese, lost last chance to find some information, help!
There is a problem: Defined an object on photo observed at a certain angle. Appreciate its size.
How can I solve this problem with a computer vision and OpenCV? I know about photogrammetry, which assesses the pictures, but I think that I'm not sure that it is that I'm looking for. What can you suggest to me? P.S. If possible, please provide your answer some examples of open source software, if anybody know.