XGRIDS Pro Guide™ / Module 9: LCC Studio

Export Formats and Sharing

LCC, LCC2, PLY, USD, USDZ, 3D Tiles, and mesh export formats; web publishing; and the specific requirements for USDZ and 3D Tiles that must be verified before reconstruction begins.

Section 1

Choosing the Right Format

LCC Studio exports 3D Gaussian Splat models in seven formats. The format you choose determines downstream software compatibility, file size, and visual fidelity. Some formats have prerequisites that must be satisfied during reconstruction, not at export time. Decide before processing.

Format

Best For

Prerequisites and Notes

LCC

XGRIDS ecosystem delivery (LCC Studio viewing, LCC for BIM Revit plugin, XGRIDS Unity/Unreal SDKs)

Proprietary compressed format, 70 to 90% smaller than PLY. Mesh export (OBJ or PLY without textures) available alongside LCC export.

LCC2

XGRIDS ecosystem delivery requiring smaller file size and faster loading

Next-generation LCC format. Smaller, smoother, and faster than LCC. Editing features (Selector, Crop, Color Grading) are not yet available for LCC2. LCC and LCC2 cannot be mixed in the same project.

PLY

Third-party 3DGS viewers, broadest open-source compatibility

5 to 10 times larger than LCC. Export at different precision levels or export all PLY data. Compatible with UE/Unity 3DGS plugins.

USD

NVIDIA Omniverse with ray-traced rendering

Recommended for Omniverse over USDZ. Exported via NVIDIA 3DGRUT toolchain. Supports Omniverse Kit 110.0+ and Isaac Sim 5.0+. Uses UsdVolVolume Schema custom extensions. Does not render in Blender, Maya, Houdini, or Cinema 4D.

USDZ

NVIDIA Omniverse forward compatibility on older Kit versions

Via NVIDIA 3DGUT with NuRec standard. Supports Omniverse Kit 107.3+. Non-linear camera projection (fisheye lens, rolling shutter). No ray tracing. Requires firmware 3.0+, Single Model reconstruction, and Portability disabled.

3D Tiles

WebGIS, digital twin web applications

Conforms to OGC 3D Tiles 1.1 standard. Loads directly in Cesium 1.131. Requires absolute coordinates (RTK or GCPs) and 4 million Gaussian points maximum.

Mesh (OBJ / PLY)

Polygon mesh deliverables for DCC software, game engines

Triangular mesh derived from Gaussian Splat reconstruction. Geometry only, no texture.

Section 2

Web Publishing

LCC Studio includes a one-click Publish function that uploads the model to XGRIDS cloud hosting and generates a shareable web link. The link can be opened in any modern browser without installing software. This is the fastest way to share a completed model with a client for review.

Published models can be managed in LCC Studio under My Models > Generated. Publishing does not replace local export; the model is also retained locally in LCC format. Published links can be revoked through the Publish Management interface.

Web publishing requires an internet connection and an active XGRIDS account. For clients with data sensitivity requirements, deliver via local export in LCC, LCC2, or PLY format rather than a web-hosted link. Confirm the client's data handling requirements before publishing.

Access Control Options

Unprotected sharing: Anyone with the link can access the model without a password.
Protected sharing: Password-protected access. Set a custom password or let the system auto-generate a strong password.
Model description (optional): Brief description of content, purpose, or context. Visible to viewers.

Section 3

USDZ Export Procedure

USDZ export is only available when three conditions are simultaneously met at reconstruction time. Verifying all three before starting reconstruction avoids discovering the limitation only after hours of processing.

Firmware version is 3.0 or higher. Check device firmware in LixelGO or LCC Scan before the scan. Firmware cannot be updated retroactively for an already-collected scan if USDZ export is required.
Reconstruction mode is Single Model. USDZ export is not available for Map Fusion, Aerial-Ground Fusion, or Aerial Reconstruction modes. If the project requires fusion, USDZ is not an available output format.
Portability is set to Off. USDZ export requires Portability disabled during reconstruction. If the project was processed with Portability On, it must be reprocessed with Portability Off to enable USDZ export.

USD vs. USDZ for NVIDIA Omniverse. USD format is recommended for better rendering quality and broader Omniverse Kit version range (110.0+). USDZ is a forward-compatible version for older Omniverse Kit (107.3+) without ray tracing support. If your Omniverse deployment supports Kit 110.0 or higher, choose USD instead of USDZ for higher fidelity.

Section 4

3D Tiles Export Procedure

3D Tiles export produces a tiled dataset loadable in Cesium and other WebGIS platforms. It requires absolute coordinates and a model with 4 million Gaussian points or fewer.

3D Tiles export requires absolute coordinates. A scan processed without RTK or GCP data has no real-world coordinates and cannot be exported to 3D Tiles. Georeferencing must be present in the scan data. It cannot be added to the model after reconstruction.

3D Tiles has a 4 million Gaussian point ceiling. Models reconstructed above this point count cannot be exported as 3D Tiles. If WebGIS delivery via Cesium or ArcGIS is a firm deliverable requirement, set Maximum Gaussian Splats at or below 4 million during reconstruction. Decide before processing, not after.

To export, select the generated model in My Models, choose Export, and select 3D Tiles from the format options. Confirm the model is within the 4 million Gaussian point limit before starting; the export will fail on models that exceed this limit without providing a useful error message in all versions of LCC Studio.

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