Understanding the Tech
3D mapping and spatial data can involve a lot of specialist language. To help you better understand the tools and techniques we use, we've provided a short glossary of key terms. Whether you're new to this field or just need a refresher, these definitions aim to clarify the core concepts behind our services.
Laser Scanning (LiDAR)
Light Detection and Ranging (LiDAR) or often called laser scanning, uses laser pulses to capture accurate 3D measurements of surfaces and structures. The result is a dense point cloud used for modelling, measurement, and documentation. Ideal for buildings, infrastructure, and terrain with millimetre precision.
Mesh Model
A 3D surface created by connecting points from a point cloud to form a network of polygons, typically triangles or quadrilaterals. Meshes are used in modelling, analysis, simulation, and 3D printing.
Photogrammetry
Creates 3D spatial data by processing overlapping photographs taken from different angles. Commonly used for textured mesh models, elevation views, and orthophotos where laser scanning may not be practical.
Textured Mesh
A mesh model enhanced with photographic textures for added visual detail. Combines the geometric accuracy of LiDAR or photogrammetry with realistic surface appearance, making it suitable for web-based 3D viewers, digital reconstruction, and visual documentation.
Point Cloud
A collection of millions of 3D points representing physical surfaces. Generated by laser scanning or photogrammetry, point clouds serve as the foundation for measurement, modelling, and BIM integration.
BIM (Building Information Modelling)
A structured digital representation of a building that includes both geometry and embedded data. Supports coordination, construction planning, and asset management across a project’s lifecycle.