Move around
On foot, from the arrival corridor to the recovery room, from a phone.
DepictHit
One photo. A complete 3D scene.
From a single photograph, DepictHit estimates depth, reconstructs geometry, materials, and lighting, then extends the scene beyond the frame based on real data about the location.
powered by LiuEngine
Demo
Slide from photo to scene.
Drag the slider to follow each stage of the computation, from the original photograph to the final render.
Every scale
From a single device to a procedure in progress.
The same engine renders a single device, an entire room and a procedure in progress, held to the same standard of fidelity.
- Video towerIt is used for camera-guided procedures, such as shoulder arthroscopy. The surgeon slides a very thin camera into the joint through an incision a few millimeters long. The image appears on this screen: the surgeon sees inside the joint and operates without opening it.
- Motor consoleIt drives the surgeon's powered instruments: the shaver, which smooths and removes damaged tissue in the joint, and the burr, which shapes the bone. Two ports for two handpieces, a display for each; it is controlled from the screen, by foot, or on the handpiece.
- Camera and lightA single unit does two things. It produces the light, carried by a cable to the tip of the scope inside the joint: that is the large round port. And it receives the image from the camera head, through the small port, and sends it in high definition to the large screen. The touchscreen adjusts the image.
- Arthroscopy pumpIt has two pump heads. One pushes saline into the joint at a set pressure, the other draws out the fluid and debris at a set flow: the joint stays distended and the image stays clear. A dedicated mode briefly raises the pressure to stop minor bleeding.
- Shaver consoleA second shaver console, with a touchscreen, two handpiece ports and one foot-pedal port. The team can thus use instruments from two product lines during the same procedure.
- Radiofrequency generatorIt powers a very fine probe that removes and coagulates tissue at a moderate temperature, which limits bleeding without burning deep. The surgeon sets the intensity on the probe, with the foot pedal, or on the touchscreen.
- Camera head holderBetween procedures, the camera head and its cable rest here, protected from knocks.
- Tower drawerAt the foot of the tower, a drawer for storing the tower's cables and accessories.
- IV poleAt the top of the mast, hooks for hanging the saline bags that feed the pump.
- Push ringThe orange ring on the back of the mast is used to push the tower from one end of the room to the other.
An object
The arthroscopy tower, modeled module by module from its photographs: each element is pointed out and explained. Turn it with your finger, tap a target or a name.
An operating room
An operating room, reconstructed with its equipment and explorable on foot from a phone.
A procedure
The same room during an arthroscopy, under its blue lighting: team in position, drapes laid, screen turned toward the surgeon.
An operating room, as it is
Four photographs of the room, followed by its 3D reconstruction, shown here as an illustration.
The tour
Relive the scene, down to the last detail.
The scene is not only viewed: it is entered. Each piece of equipment stands in its place at its real size, can be pointed out with a gesture, and explains itself.
Point out
A gesture on a piece of equipment shows its name, then its card, without leaving the scene.
Rearrange
Furniture can be moved and turned; the consistency checks follow every change.
Replay
The room switches to surgery: team in place, screen turned toward them, drapes laid.
Training
Learn by handling.
One sentence is enough: the scene is built and checked, then you can turn it, point at it and have it explained. For training a team, a student or a patient.
Benzene ring
The fat-loving part: it carries the molecule through the nerve's sheath and membrane. The more it dissolves in them, the more potent the anesthetic.
Amide
The middle link classifies the anesthetic: an amide is broken down by the liver, an ester by enzymes in the blood.
Piperidine
It carries the terminal amine, the molecule's switch: neutral, it crosses membranes; charged, it dissolves in water.
Propyl
Three carbons on the nitrogen: ropivacaine is the propyl version of bupivacaine, which carries four, and it is less fat-soluble.
Binding site
Once charged, this nitrogen lodges in the pore of the nerve's sodium channel: with the channel blocked, the nerve signal no longer gets through.
- Carbon
- Hydrogen
- Nitrogen
- Oxygen
“Show me ropivacaine in 3D”
- FormulaC17H26N2O
- Atoms placed46
- Bonds checked47 / 47
- Overlapping atoms0
In brief
A local anesthetic of the amide family: it blocks the nerve's sodium channel, and the nerve signal no longer gets through.
Only one of the two mirror-image forms, the propyl version of bupivacaine: less fat-soluble, and less toxic to the heart and brain in preclinical studies. It is broken down by the liver.
“Show me ropivacaine in its receptor”
- ReceptorNav1.7 sodium channel
- StructurePDB 8I5B · 2.7 Å
- Amino acids in contact13 (≤ 4.5 Å)
- Domains involvedI · II · III · IV
- S form, no overlapverified
In brief
The molecule lodges beneath the pore's intracellular gate, where segments of the channel's four domains meet.
Inferred pose: that of the published levobupivacaine, minus the carbon that distinguishes the two molecules.
A molecule, from one sentence.
The name is read from the request and the structure comes from a public database; every bond is checked before display.
The instrument table.
Each instrument can be pointed at and explained: a way to practice setting up a table before entering the operating room.
Devices that name themselves.
The labels are read from the photo, the device is looked up online or recognized by its shape, and its information card opens.
Nothing made up.
Whatever cannot be verified stays marked as unidentified, and says so.
No survey, no second viewpoint: one photograph is enough. The engine infers depth and geometry from it, locates where it was taken, and restores what the lens never captured.
Case study
An entire avenue, from a single photo.
Avenue de la République in Nice: a photograph taken from the sidewalk with a phone. The engine reconstructed everything else.
The tram and its overhead lines, the crosswalk, the balconies, the fruit stand, and the passersby are restored in 3D, in their places and at their real dimensions.
- 275 m
- of avenue, including tram tracks and overhead wires
- 28
- buildings: 4 read from the photo, the rest inferred
- 9
- passersby, each walking at their own pace
- 140/140
- consistency checks passed
Beyond the frame
The scene keeps going.
Behind the camera, the avenue continues and the neighboring street opens up. Widths and heights match the real neighborhood, the facades take on the colors of Nice, and nothing shown in the photograph is altered.
In motion
From one photo to the whole park.
A photo of River Wonders in Singapore becomes a 3D scene, then the whole park, generated from its real map and explorable on foot.
Technology
What the engine can do.
Seven modules run automatically in sequence, from the original photograph to a verified scene ready to be explored.
Full depth
Monocular estimation assigns every point in the image its real distance, with no depth sensor and no second shot.
Automatic recognition
Each object is segmented, identified, and restored at its real size, then becomes an independent element that can be moved.
Fine meshing
Surfaces are rebuilt as continuous, faithful meshes: a hand keeps its five fingers, foliage keeps its outline.
Physically based lighting and materials
A physically based render whose sun, sky, and shadows are matched to the photograph, and whose color science follows that of the camera.
Procedural generation true to reality
Beyond the frame, the scene is generated from the location's map data: street widths, building lines, and building heights all come from the real neighborhood.
Physical consistency checks
Before delivery, every scene undergoes physical and logical checks; nothing floats, no surface can be passed through, and every element keeps its function.
Walk-through
The scene can be explored on foot from an ordinary phone; when it is extended, visitors keep their position and point of view.
- 1
- single photograph, no survey needed
- 3.8 million
- triangles in the demo scene
- 692.6 m
- of the real avenue measured to extend the street
- 250
- checks passed by the extended avenue
The consistency core
A scene that holds together.
Before it is shown, every scene is questioned the way a specialist of the place would question it. Anything that floats, intersects or makes no sense is rejected, with the figures to prove it.
Consistency report · an avenue in Nice, rebuilt from a photo
- 1Pedestrian crossing: stripes 0.50 m wide, 0.50 m apart, 2.70 m longcompliant
- 2Curb step at the end of the crossing: 2 cm, the maximum allowedcompliant
- 3Pedestrian signal at the end of the crossing, facing along itcompliant
- 4Tram rails: 1,435 mm gauge, as on the Nice networkcompliant
- 5Two trams can pass: 3.15 m between tracks for 2.65 m-wide trainscompliant
- 6Overhead line: 9 cross-span wires, each held at both endscompliant
- 7Railings: 546 balconies, all at least 1 m highcompliant
- 8Shadows in the photo: 8 areas out of 8 reproduced by the stated suncompliant
- 9Passers-by: 9 out of 9 on a sidewalk, the crossing or the pedestrian areacompliant
- !Sidewalk of rue Caissotti: 0.75 m of clear width where 1.40 m is required, just as it is in realityflagged
479 checks, 478 passed. The only gap is the real street's own: it is flagged, not quietly fixed.
Consistency report · shoulder arthroscopy, in an operating room
- Nothing floats: every object rests on a supportcompliant
- The sterile drape separates the anaesthesia station from the surgical sitecompliant
- The foot pedal is on the surgeon's sidecompliant
- The tower screen faces the surgeon11°
- Screen left vertical on its mast, above the team23° · rejected
At most 15° between the screen axis and the line of sight: a scene that exceeds it is not delivered.
Sourced rules
Every rule cites its reference: surgical ergonomics guidelines, accessibility standards, anthropometry.
Proven by breaking the scene
Every rule is tested on a deliberately broken scene. A rule that rejects nothing is itself rejected.
Replayed in the tour
The checks are run again on the scene as it is explored, and follow every object that is moved.
- 33
- consistency rules
- 79
- cited sources
- 479
- checks on the avenue
- 276
- checks on the arthroscopy scene
Extend onto the real place
Beyond the frame, the real place.
From a single photograph, the engine geolocates the shot, then rebuilds the surroundings from the site's real map: buildings, paths, bodies of water, and trees.
Locate
The place in the photo is identified and located.
Survey the layout
Buildings, paths, water, and vegetation are surveyed from open map data.
Orient
The plan is placed beneath the camera, aligned with the shooting axis and the path of the sun.
Populate
Every tree is modeled at its real size, with the same level of detail as the foreground.
Fill in
Areas the photograph does not show are filled in without altering what it does show; no gaps remain behind a shrub bed.
Verify
Nothing floats, no surface can be passed through, no tree stands on a path or in the water; the scene is delivered only once it passes.
Case study
River Wonders, Singapore.
A photograph taken at the park entrance. The engine geolocated the shot, surveyed the site plan, and rebuilt everything around the image: the reservoir, the footbridge, the pavilions, and every tree at its measured height. The canopy on the left of the photograph matches its position on the plan exactly.
- 59
- pavilions at their real footprint
- 104
- trees at their measured position and height
- 4 393
- consistency checks passed
Use cases
One pipeline, many industries.
Scout before you shoot.
Prepare your shot list and position your cameras in the real setting before you even scout it.
Patient preparation.
Introduce patients to the care facility before surgery or a hospital stay, so they arrive with greater peace of mind.
Space planning.
Test a new room layout before moving a single piece of equipment.
Training in 3D.
A molecule requested in one sentence, an instrument table to set up, a tower whose every device explains itself: you learn by handling.
Inventory in 3D.
Each product modeled at its real dimensions, stored in its place and pointed out with a gesture: its card opens, and the inventory is explored like the place itself.
Reconstructing places.
Reconstruct a street or a site from a few photographs, and explore its surroundings.
Introduce a place.
Introduce a place before the visit: its routes, its viewpoints, and its distances.
Healthcare
The operating room, visited before surgery.
The day before, patients tour the facility from their phone: the arrival corridor, the operating room, the recovery room. On the day, they arrive somewhere they already know.
- The complete route, from the arrival corridor to the recovery room.
- An explanation at every step.
- On a phone, with no app to install.
Reference scenes
More places, already reconstructed.
Each one originated from a photograph or a short description, and all of them passed the same checks.
Avenue in Nice
Dense urban setting: tram, facades, passersby, generated side street.
Park entrance
Outdoor greenery, articulated figure, signage.
Operating room
Complete route, equipment, surgical lighting.
Doctor's office
Two figures, a workstation.
Bedroom
Night lighting, a single light source.
Park
Outdoors, morning light.
Try it with your own photograph.
Upload a photograph and the reconstruction runs directly in your browser. The service is free, requires no sign-up, and your image is not stored.
About
A 3D engine built for the real world.
DepictHit turns a photograph into a navigable, verified 3D scene, then extends it using real data about the location. For patients, managers and training.
Reconstruction
From a photo to a scene.
Camera calibration, volume survey, identified objects, then the place extended beyond the frame from open data: buildings, streets, terrain.
Rendering
Real time, in the browser.
Computed on the graphics card, with an automatic fallback on older devices, physically based materials and realistic lighting, on phone and computer alike, with nothing to install.
Verification
The consistency core.
Every scene is checked before it is shown: collisions, supports, distances, what each object is for. Anything that cannot be verified is flagged.
For patients
Arrive somewhere already familiar.
Explore the premises the day before, from a phone. In children, randomized trials show that a virtual tour of the operating room reduces preoperative anxiety; in adults, it better meets the need for information.
For managers
Faithful spaces, at your fingertips.
Present a department, train teams, plan a reorganization or a new layout, without taking a room out of service.
For training
A creative visual, shaped by a single sentence.
A molecule in its receptor, an instrument table, a device: the scene is born from a simple request, with realistic physics and materials, then can be handled and explained.
Rights and licenses
- LiuEngine, its code, its algorithms and its reconstruction pipeline are an original creation by Vincent LIU-BOUSQUEL.
- The DepictHit name and the text, photographs, scenes and films on this site: © 2026 Vincent LIU-BOUSQUEL, all rights reserved.
- Any reproduction or reuse, in whole or in part, without written permission is prohibited.
Code
- LiuEngine's source code is proprietary and is not distributed.
- Third-party data, fonts and libraries: each under its own license. licenses and credits
The designer. Vincent LIU-BOUSQUEL, anesthesiologist, pilot and technophile, designed DepictHit in the operating room, with the rigor of cockpit checklists.