3d reconstruction from 2 images without info about the camera

Question

I\'m new in this field and I\'m trying to model a simple scene in 3d out of 2d images and I dont have any info about cameras. I know that there are 3 options:

Answer 1

1. the procedure looks OK to me .

2. as far as I know, regarding Image based 3D modelling, cameras are explicitly calibrated or implicitly calibrated. you don't want to explicitly calibrating the camera. you will make use of those things anyway. matching corresponding point pairs are definitely a heavily used approach.