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3

What you are asking is to do compositing. Blender can do compositing; compositing Blender is also free and opensource.


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You are describing Blender3D . It has a top tier GUI for manipulating meshes, rendering, animation, texturing and so on, and all of the parameters for everything is Python scriptable - with the hints in the GUI itself spelling what calls are needed in script to manipulate the desired attributes and properties in the objects. Once you get the grasp of it - ...


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You can certainly solve a camera position of a single photo with known 3D data (anywhere from 4 to 7 known 3D points depending on what you know about the camera). PhotoModeler can do this. But to do this automatically with little to no user intervention on a scene of unknown content would be difficult.


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I haven't used it in a long time but there is Terragen 4 from Planetside: https://planetside.co.uk/free-downloads/terragen-4-free-download/


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You may find that you can apply a chalk spray to the object to create a suitable surface for photogrammetry. Many image scanning devices for 3D modeling have problems with transparent and reflective surfaces and such sprays are frequently the solution. As with all such products, test it on a non-critical surface to ensure the glasses will not be damaged. I ...


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So, I found out that apitrace can be partially used for similar tasks. At least, at this time this soft makes available to trace graphics API calls and show viewports content in D3D8 applications.


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Blender isn't a program well suited to engineering type creation. I'm unfamiliar with Unity, but I suspect the same applies. For engineering applications, you'd want a CAD type of program. Fusion 360 is one such package, free for hobbyists. Another is OnShape, a web-based program. Both programs work well for highly technical model creation. As is common ...


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Take a look at FreeCAD. It should be suffcient to learn and model with.


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I started off 3D modelling using this free online software called Tinkercad (https://www.tinkercad.com/). You're able to export to .obj .stl and .svg. It's really simplistic and great for beginners. It is also developed by Autodesk, one of the best-known companies for their CAD software.


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