No, there is no POV from a 2D image that you can measure without ortho-recitfying it. You must "flatten" out the image to counteract the distortion created when you project a 3D object onto a 2D image.
Show us one of those "flatten" out 2D images.
No reason you can't place a properly-scaled 3D model on an unaltered 2D photo and match the photo's field-of-view.
This is the only way to measure objects on a 2D image, which is what photogrammetry is all about; restoring the 3rd dimension from a 2D image.
You have a graphic example of that?
In the above image, the President's head is approximately in profile and its plane is similar to the film plane. We can add measurements at the head's midline that will be on the same plane as the head seen in the photo and the film plane. All three planes coincide. OK, I'll concede 2% "distortion (but that's a lot less distortion than your laser test).
Since this is likely beyond your purview, your best bet is to create a digital 3D model of JFK, which you can manipulate graphically into the correct position to make the MB work, or not. But you are relying on the CAD's physics engine to do all the work for you and in the end, who is going to buy it?
"Manipulate graphically". What are you talking about? The 3D model exists as scaled (usually 1:1) and in its own file. It should come very close to matching the same subject and its position unique to the photo. Often-times, it will match close-to-perfect, depends on facet-count and so forth.
It's so much easier to skip the CGI and use 3D surrogates instead, which anyone can do even if you have no photo-analysis credentials. That is the beauty of a 3D re-enactment using lasers. It's cheap and deadly accurate and anyone can do it to convince themselves that the MB was either feasible or
Supposedly
not having your photos from your own test allows everyone to "buy it". LOL.