3D Survey Collection: Level of Detail in Blender

▶ 3D Survey Collection: Level of Detail in Blender (~~6 min)

Clip: 03 | Duration: ~6 min | Recording segment: 11:43 → ~18:00

Prerequisites

Blender 3.x or later installed.

Overview

The 3D Survey Collection (3DSC) add-on solves the problem of working with very large photogrammetric models in Blender. The LOD (Level of Detail) generator creates four resolution versions of any mesh, allowing real-time switching between detail levels while working on site-scale datasets.

Fig. 26 The 3D Survey Collection panel in the Blender N-panel sidebar.

Key Concepts

Large photogrammetric models (10M+ polygons) are impractical on standard hardware.
The LOD generator creates four resolution levels from a single source mesh.
LOD levels can be switched at runtime — no scene reload required.
The 3DSC panel lives in the Blender sidebar (press N to open).

Screenshots

Fig. 27 Single architectural element at LOD Level 3: 10,000 polygons.

Fig. 28 Same element at original resolution: 10 million polygons.

Fig. 29 The LOD generator interface with resolution parameters.

Fig. 30 Switching between LOD levels in real time in the Blender viewport.

Try It Yourself

Apply the LOD generator to the sample mesh in the playground dataset and verify all four LOD levels load correctly.

Note

A video walkthrough for this tutorial will be available on the Extended Matrix YouTube channel.