Hello @Ajinkya,
welcome to this moderated Azure community forum.
From a practical point of view, importing an image in 3D scenes studio and attaching twins to elements and adding visual objects can only be done via the editor.
There is no API available.
Technically, you could construct or modify this 3DScenesConfiguration.json:
This is a JSON file having all relationships between images, elements, twins, and visual objects.
Though, this is not recommended due to lack of documentation and possible unsuspected behavior in the 3D scenes environment.
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