The multidegree of the multi-image variety
arXiv:1701.03852
Abstract
The multi-image variety is a subvariety of Gr(1,P^3)^n that models taking pictures with n rational cameras. We compute its cohomology class in the cohomology of Gr(1,P^3)^n, and from there its multidegree as a subvariety of (P^5)^n under the Plücker embedding.
16 pages, 5 figures, 1 table