this is the B-29 model but in addition i downloaded a stock b-29 model, and aligned it with my own model. Using the photogrammetry software, I was able to sample points from this downloaded mesh to create a point cloud. I merged this new point cloud with the previous dense point cloud originally computed using my image set. this resulted in an accurate mesh.
My 3D scene generated with photogrammetry software 3DF Zephyr v4.509 processing 500 images