You could use Archipelis Designer to get basic 3d textured objects for a backround  from the image and arrange them in iclone. You would need 3dxchange of course for the imports.
Someone did a video for basic object creation with it for Iclone here.


ps. the video has a wrong software link in it. 

Archipelis designer is here. Think there is a demo version.


http://www.archipelis.com/home.php

@RogueAnime
Thank you for the lovely commentary...  I have always believed it is one of the best things one can do is to share knowledge (because it won't do me any good when I leave this earth if I never shared it with anyone).  Most of the older members of the community are willing to share their knowledge, especially with new iClone users....  as I preach to my grandbabies, sharing is a beautiful thing :):)

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iClone Certified Content Developer and Author of the Pinky Frink® Adventure Series & the Pinky Frink® Learning Books
site: Granny J's 3D Attic SKYPE = grannyjsplace email: grannyj@grannyjs3dattic.com
MY RIG: GPU: Dual GeForce GTX 970M | CPU: Intel(R) Core(TM)i7-5930K @3.50GHz| 32.00 GB RAM | OS: Win 7 Pro SP1 | DX11

With "shadow casting" you can already have impressive 3d effects on 2d environments. Look at this iclone video: https://www.youtube.com/watch?v=T0zo5Z6ann0

I was thinking similar to what GrannyJ said.

Akober specifically mentioned "backgrounds" a couple times.  Adding a simple "background image" is completely different from (and much easier than) trying to convert a photograph into a 3D environment.  You can certainly use a photograph as a background image in iClone.

Use the "right-mouse-button" to drag an image into your iClone scene, and you'll have a few options of how you want that image used in your scene.

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@Granny J - WOW! Excellent information, once again! You have always been so talented and knowledgeable, thank you for being such a great mentor & contributing to all the friends here. :D ~V~

       Val RogueAnanda

To date, the only way to convert actual 2d photograpghy to 3D is with some sort of photogammetry software (most only work for Windows or Linux and use CUDA, so you must have a decent nVidia card - forget MAC altogether unless you are good at reprogramming binary).  One should be advised that this is NOT a quick process. For example, to recreate everything in your kid's bedrooms, you would need to photograph EVERY element individually from EVERY angle (so that you capture at least 30-50 images of EACH object) then use the photos to create the mesh for the individual items.  Then the final meshes would need to be imported into iClone using 3dXchange, then they would need to be placed in the room & scaled to correct sizing. Photogrammetry is NOT a great tool for capturing architectural elements like walls, windows, etc., but better for things like individual pieces of furniture, lamps, toys, etc. The reason content developers build & texture meshes from scratch instead of using photogammetry is because we can create better results (all photogammetry meshes must be "tweaked" when the software completes the mesh building process as there are always faults in the mesh) & it takes less time to build it right the first time through.   Another point is photogammetry creates meshes that are extremely high in polycounts, to the point where the mesh will require optimization and/or decimation to be more compatible with iClone.
NOW, that being said, there are ways in iClone to achieve the appearance you desire using photographs...   I will try to explain this in brief.

In the image above (using iClone) the rear wall with window, columns and stairs is a flat image placed on 3D Surface Plane A (stock content) using an opacity map for the window & a normal bump map to create an appearance of 3D.  The ceiling is a flat Plane B with a ceiling texture & normal bump map and two 3D can light props added using glow to create the lit effect. The floor is a flat Plane B with a wood plank flooring texture with diffuse & normal bump , plus blend & rreflection maps. The beach scene is a flat Plane A placed behind the rear wall plane with a beach video in .wmv format for the diffuse. The plants (left & right) plus the sofa & pillows are actual 3D props added to the scene. The avatar was created & added to the scene. It appears to be a totally 3D room, but in fact, the only 3D elements are the can lights, the plants, the sofa with pillows & the avatar. As the room itself is only 8 poly with some high res imagery, computer resource load is minimized. I created this scene in less than 15 minutes, so as long as the project does not require the avatar to move from room to room, using flat planes with good imagery can work for your background.
I used this scene to create a quick birthday video for my 8 year old grand daughter (final video can be seen here http://www.grannyjs3dattic.com/BDs/2018/HB2LORAfromGrammy.mp4 )

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iClone Certified Content Developer and Author of the Pinky Frink® Adventure Series & the Pinky Frink® Learning Books
site: Granny J's 3D Attic SKYPE = grannyjsplace email: grannyj@grannyjs3dattic.com
MY RIG: GPU: Dual GeForce GTX 970M | CPU: Intel(R) Core(TM)i7-5930K @3.50GHz| 32.00 GB RAM | OS: Win 7 Pro SP1 | DX11

Just to understand....there’s no solution at all in Reallusion for my 2 things, correct?

Somehow I got the other impression through a research and purchased a bundle.

You might want to give Meshroom a go.



These types of programs usually are shown working with objects in the quick demos, but they can also do rooms.

Autodesk used to offer the free 123D software which created 3D objects from a series of photos, but that is no longer available.

Many years ago there was a software that allowed to create a 3D scene like a room based on a photo, but that's gone too.

EDIT 1: There is something called photogrammetric modeling, which is used a lot in architecture to create 3D models of existing buildings (Agisoft Photoscan). It seems quite a lot of work though compared to just modeling a room.

EDIT 2: There is a free program called Meshroom:

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This isn't a direct solution to your question akober, but imagine this!



As far a 'props' or models - this is interesting:
(But where did it go?)




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