Floating UI
Floating UI, or HUD overlay cinematography, places readable interface, callouts, and data planes in the air of the scene so information lives in space, not only on a physical screen. The cockpit is the room.
Narrative function
A hand reaches into a diagram. Callouts hang beside a face.
The camera can dolly and the panels should parallax against the walls. Use it when the character is working with data as if it were furniture.
It is the wrong tool when type is glued to the frame like a broadcast bug. If the graphics do not occupy 3D space, you made a lower-third, not a HUD in the air.
How it works
Photograph the subject with a real key in the room. Composite interface planes with their own vanishing points, a few centimeters to a few meters in front of the face.
If the camera moves, the panels must parallax. Type stays sharp enough to read.
A faint self-illumination on the planes is allowed. It should not replace the key on the skin.
Prompt floating UI over the subject: HUD, callouts, and interface planes in 3D space, the screen as a cockpit.
When to use it
Use it for the beat when a pilot, surgeon, or detective is reading the air. Do not use it as decorative chrome on a portrait that has no data to parse.
Compared with similar shots
Projections throw pictures onto walls and bodies. Floating UI hangs panels in space.
Video Game borrows playable camera grammar and HUD as game UI. Floating UI can live in live-action space without becoming a navigable engine.
In film
Minority Report treats data as planes a body can shove. Iron Man puts callouts in the helmet's air.
Both are grammar for readable interface in 3D, not frames to copy.
Prompt it
Floating UI over [Subject], HUD, callouts, and interface planes in 3D space, the screen as a cockpit. Name what the panels say in plain language, keep type sharp, and say the planes parallax if the camera moves.
Ban unreadable scribble.
What usually goes wrong
The usual wrong cousin is a 2D overlay or projections on a wall. The tell is type stuck to the frame edge, or light crawling on brick with no hanging planes.
The fix is interface with depth and parallax, still keyed like a room.
Questions
What is floating UI in film?
Floating UI places HUD, callouts, and interface planes in 3D space around the subject. Data lives in the air, as if the room were a cockpit.
Floating UI vs projections
Projections are light thrown onto surfaces. Floating UI hangs readable panels in space with their own depth. One is a wall that becomes a screen. The other is a diagram you can stand inside.
When should I use floating UI?
Use it when a character must read or move data in the air. Skip it when you only need a caption or a wall of signage.
How do I prompt floating UI for AI image or video?
Write Floating UI over [Subject], HUD, callouts, and interface planes in 3D space. Demand readable type and parallax if the camera moves. Do not glue graphics to the frame.
Melies can generate this Floating UI
Melies is the AI filmmaking workspace. This Floating UI opens with the optical prompt loaded, so the effect has a physical cause in the frame.