How to Use iPhone LiDAR Scene Scan to Capture 3D Environments with KIRI Engine

KIRI Engine Scene Scan uses iPhone LiDAR to capture rooms, interiors, and outdoor spaces as 3D mesh scenes.

The LiDAR sensor on iPhone Pro models can capture rooms, interiors, and outdoor spaces as 3D mesh scenes. KIRI Engine’s Scene Scan mode focuses on environment geometry, making it useful when you need a 3D record of a space rather than a floor plan or a photorealistic visual reconstruction.

This guide explains how to use Scene Scan, when it is the right LiDAR mode, how it differs from Room Scan and 3D Gaussian Splatting, and when AI-Enhanced LiDAR produces noticeably cleaner geometry.

Quick Answer

Scene Scan uses the iPhone LiDAR sensor to capture a mesh-based 3D model of an environment or space. To start, tap the + button, select LiDAR Scan, then Scene Scan. Slowly move through the area while covering walls, floors, corners, and objects from multiple angles.

Standard Scene Scan is available on the free plan. Pro users can enable AI-Enhanced LiDAR for cleaner scene geometry when surface quality matters.

Use Scene Scan when you need mesh-based scene geometry for 3D software, AR viewing, or spatial reference, rather than a floor plan, a photogrammetry model, or a 3D Gaussian Splatting capture.

What You Need

• A supported device: Any iPhone or iPad with a LiDAR sensor. This includes iPhone 12 Pro / Pro Max and later Pro models, plus iPad Pro models from 2020 onward. Standard iPhone models do not have a LiDAR sensor.

• KIRI Engine app: Free to download. No subscription required for standard Scene Scan.

• A scene: Works for both indoor and outdoor environments. Best results in spaces with defined structural geometry.

How to Capture a Scene: Step by Step

KIRI Engine Scene Scan captures an indoor space with iPhone LiDAR and builds a 3D scene from the recorded spatial geometry.

Step 1: Open the app and start a new scan

Tap the + button on the home screen, select LiDAR Scan, then select Scene Scan. You will enter the camera view with the LiDAR depth overlay active.

Step 2: Move the device in a 360-degree motion

Slowly move the iPhone around the environment, covering as many surfaces and angles as possible. Aim for full coverage of walls, floors, ceilings, and objects. The depth sensor builds the 3D model in real time as you move.

Step 3: Ensure maximum coverage

Revisit areas that look incomplete in the depth overlay. Pay particular attention to corners, edges between surfaces, and any areas with limited texture such as painted walls or smooth floors.

Step 4: Complete the scan and export

When coverage is sufficient, end the scan. KIRI Engine processes the depth data and generates a 3D scene. Export in OBJ or USDZ format from the share button.

Standard Scene Scan vs AI-Enhanced LiDAR

Standard Scene Scan processes LiDAR depth data locally on-device. It is fast, works offline, and produces a usable 3D model of the environment. For quick spatial reference, documentation, or sharing a rough 3D impression of a space, standard Scene Scan is sufficient.

For workflows where surface quality matters, standard LiDAR output has known limitations: flat surfaces like walls and floors can appear noisy, edges between surfaces may blur, and low-texture areas tend to produce inconsistent depth data.

AI-Enhanced LiDAR addresses these limitations. Available as a Pro option for Scene Scan, it sends the captured depth data through KIRI Engine's cloud processing pipeline, where machine learning models refine the depth data and scene geometry. The result is cleaner wall and floor geometry, sharper structural edges, and more consistent surfaces across the scan.

AI-Enhanced LiDAR requires a Pro subscription and an internet connection for the cloud processing step. The capture workflow is identical to standard Scene Scan.

When Scene Scan Is the Right Choice

Scene Scan is the right LiDAR mode when you need a 3D mesh model of an environment — not a floor plan, not a photorealistic visual reconstruction, and not a single-object scan.

Scene Scan is useful for spatial reference, environment documentation, interior structure capture, and any workflow where the output is a 3D mesh imported into Blender, AR Quick Look, or another 3D tool. It is not designed for precise measurement deliverables or high-detail texture output.

Use Cases

1. Documenting architecture and interiors

Scene Scan produces a viewable 3D mesh model of a room or building interior that can be used for spatial reference, design discussion, and early-stage documentation. Standard Scene Scan works well for quick spatial communication. AI-Enhanced LiDAR is worth enabling when the geometry needs to be cleaner for downstream 3D reference or modeling workflows.

2. Outdoor and large-scale environments

Scene Scan handles outdoor environments including courtyards, facades, streetscapes, and natural landscapes. LiDAR is less dependent on visible light than photogrammetry, making it useful for scanning at dawn, dusk, or in overcast conditions where camera-based methods can struggle.

3. Real estate and property documentation

Scene Scan can help document the spatial layout of a property in 3D, making it easier to communicate room relationships, ceiling height, and overall space structure. It is useful for internal reference, renovation planning, and early-stage property communication, especially when photos alone do not show the shape of the space clearly.

4. Reference for 3D modeling and visual effects

Capturing a real environment as a 3D scene provides a spatial reference for 3D modeling, set extension, or visual effects work. AI-Enhanced LiDAR produces cleaner geometry that can be easier to inspect, reference, or work with in downstream 3D workflows.

Tips for a Better Scene Scan

Move slowly and overlap coverage areas. Fast movement leaves gaps in the depth data. A slow, deliberate path with overlapping coverage gives the sensor time to register each surface from multiple angles.

Pay extra attention to low-texture surfaces. Painted walls, smooth floors, and glass surfaces are hardest for LiDAR to capture consistently. Spend additional time scanning these areas from different angles and distances.

Cover corners and edges carefully. Structural edges where walls, floors, and ceilings meet define the geometry of the space. Thorough coverage of these areas produces a more accurate model.

Use AI-Enhanced LiDAR when the output will be inspected closely. For quick reference or sharing, standard Scene Scan is fast and efficient. When the geometry will be imported into modeling software or viewed in detail, AI-Enhanced LiDAR produces noticeably cleaner results.

What the Output Looks Like

Scene Scan produces a 3D mesh model of the captured environment. KIRI Engine exports Scene Scan results in OBJ and USDZ format. See all supported export formats for compatibility details.

OBJ files can be imported into 3D software such as Blender and other modeling tools. USDZ files open in Apple's AR Quick Look, allowing the scene to be viewed at real scale in augmented reality on any iPhone or iPad.

AI-Enhanced LiDAR produces the same output formats with improved geometry quality.

KIRI Engine's LiDAR modes also include Room Scan for floor plans and Object Capture for individual objects. Scene Scan is specifically optimized for capturing full environments and spaces.

How This Compares to Other Scanning Methods

Scene Scan vs Room Scan: Room Scan generates a 2D floor plan with labeled dimensions and is optimized for interior measurement. Scene Scan captures a full 3D environment without the floor plan output. If you need a floor plan with room dimensions, use Room Scan. If you need a 3D mesh of the space, use Scene Scan.

Scene Scan vs Photo Scan: KIRI Engine's Photo Scan uses photogrammetry from regular camera photos. Photo Scan typically produces higher surface detail and texture quality, but requires good lighting and more photos. Scene Scan is faster for capturing large environments and less dependent on lighting conditions.

Scene Scan vs 3D Gaussian Splatting: 3DGS capture produces visually realistic scene reconstructions with high color fidelity. Scene Scan produces geometric mesh output better suited for import into 3D software and AR display at real scale. See 3D Gaussian Splatting vs Photogrammetry vs LiDAR for a full comparison.

Frequently Asked Questions

What is the difference between Scene Scan and Room Scan? Room Scan generates a 2D floor plan with labeled dimensions and is designed for interior measurement. Scene Scan captures a full 3D mesh model of an environment. For floor plans and room dimensions, use Room Scan. For a 3D environment to view, share, or import into software, use Scene Scan.

Is Scene Scan free? Yes. Standard Scene Scan is included in KIRI Engine's free plan with no export restrictions. A free account is required. AI-Enhanced LiDAR, which improves the output quality of Scene Scan, requires a Pro subscription.

What is AI-Enhanced LiDAR and how does it improve Scene Scan? AI-Enhanced LiDAR is a Pro option for Scene Scan that applies cloud-based AI processing to the captured depth data. It reduces surface noise, sharpens structural edges, and improves geometry consistency across low-texture surfaces like walls and floors. Full details in the AI-Enhanced LiDAR guide.

Does Scene Scan work outdoors? Yes. Scene Scan works for both indoor and outdoor environments. LiDAR uses infrared pulses and is less dependent on visible light than camera-based methods, making it suitable for outdoor use in varied lighting conditions.

Does Scene Scan work on Android? No. Scene Scan requires a LiDAR sensor, which is only available on iPhone Pro and iPad Pro models. Android users can use KIRI Engine's Photo Scan or 3D Gaussian Splatting for environment capture.

What formats does Scene Scan export to? OBJ and USDZ. Full details on the export formats page.

How is Scene Scan different from 3D Gaussian Splatting? Scene Scan produces geometric mesh output suitable for 3D software import and AR viewing at real scale. 3D Gaussian Splatting is better for visually realistic scene capture with high color fidelity, but it is not the same as a mesh-first LiDAR workflow. The right choice depends on whether you need editable scene geometry or photorealistic visual capture.

Get Started

KIRI Engine is free to download. A free account is required. Standard Scene Scan is available on the free plan. AI-Enhanced LiDAR requires a Pro subscription.

Download on the App Store · Try KIRI Engine on Web · View Pro plans

Related reading

• What is AI-Enhanced LiDAR?

• LiDAR Scan: all modes explained

• iPhone LiDAR 3D Scanning Guide

• LiDAR Room Scan Guide

• LiDAR Object Capture Guide

• Best LiDAR 3D Scanner Apps for iPhone in 2026

• 3D Gaussian Splatting vs Photogrammetry vs LiDAR

• Export formats