Question 3D billboards technology

[Binary-Mali]

can someone explain to me the technology behind those 3d billboards in some cities?
i will like to create this myself using any DIY method

• is it a special type of screen or its just two frameless screens placed at 90 degrees to each other
• What type of software is used in creating the contents ( blender, unreal, or something else
• any link to more information about the hardware/software requirement?
• can I try a DIY version with two flat monitors placed at 90 degrees?

 

[kerberos_20]

it single screen, videos are captured from two angles, your brain just combines them together

 

[Binary-Mali]

it single screen, videos are captured from two angles, your brain just combines them together

not the usual flat screen I guess

 

[hotaru.hino]

Going by this image alone, it looks to me more like they've crafted an image and the picture was taken at an angle such that it appears to be popping out of the screen.

It's similar to this:

 

[USAFRet]

google for 3d street art.
You'll find many static examples of this.