3D backprojection (potential project)

[Adel Makram]

I just thought about whether it is possible, or already exists, a method to construct a 3D optical scene using the method of backprojection.
First, I will capture the scene (say a castle) from different views using HD camera. Then using one of the app to stitch the 2D images into a cloud of points in the 3D space. Next, I will further slice the 3D of the castle into thin cross section 2D slices which have the surface information of the object. Lastly, using the technique of filtered backprojection used in CT to project the light from different small light beams around the scene to create the 3D model.

 

[Tom.G]

project the light from different small light beams around the scene to create the 3D model.

And what will the light beams be projected ON to?

 

[Adel Makram]

Sorry for the late in the reply. The light may be projected on a cloud or a crystal whose particles would shin when reflecting the light.

 

[Tom.G]

OK so far.
If I understand Filtered Backprojection, it is a process based on the light from the object being imaged. That means it would be between the cloud/crystal and the observer. Is this what you had in mind?

See: https://radiopaedia.org/articles/filtered-back-projection-1
(above found with: https://www.google.com/search?&q=filtered+back+projection+method)

You might find this one interesting also: https://futurism.com/physicists-made-star-wars-style-3d-projections-reality

 

[Adel Makram]

I like the 3D article in the last link. But it seems that it has a very limited capability and it is very small in size too (lens is used to watch it).
My technique can be made on any scale.