Epipolar lines in slides parallel to image features?

Epipolar lines in slides parallel to image features?

Ofer Israelov 29 Dec 2018 13:26

The epipolar lines in the 32nd slide of the first geometry lecture seem to be precisely parallel to the lines of the building in the image. Is it a coincidence? Epipolar lines are normally determined by the relative locations of the cameras and not by the object in the scene (even if the features of the object in the scene were used in recovering the epipolar constraints)

Thanks

Last edited on 29 Dec 2018 13:28 by Ofer Israelov Show more

Re: Epipolar lines in slides parallel to image features?

benfei 30 Dec 2018 12:53

Yes. It seems like a coincidence.

Re: Epipolar lines in slides parallel to image features?

Ofer Israelov 31 Dec 2018 21:12

Ok, I figured that if the baseline is parallel to a line in the scene then there's an epiplane that fully coincides with that line. So in this case the two people taking the photo were probably standing along the same sidewalk that's parallel to the building.