Definition
E57 is a widely used open file format for storing 3D point cloud data along with associated images and metadata. It was designed specifically to hold the large, rich datasets produced by laser scanners and other 3D imaging systems.
Because it is an open standard, E57 can be read and written by many different software programs, making it a reliable way to share scan data between tools. It keeps points, colour, and imagery together in one structured file.
In simple terms, E57 is a common container for 3D scan data that lets point clouds move easily between programs.
How It Works
An E57 file stores point cloud data, where each point has a position and often colour or intensity, together with any linked images and information about how the data was captured. The format organises this efficiently so that even very large scans can be stored and accessed reliably.
Because the format is openly documented, developers can support it across a wide range of scanning and modelling software. This means a scan saved as E57 in one program can be opened accurately in another, preserving the data.
Applications
E57 is used across surveying, construction, BIM, and heritage wherever point clouds are shared. It is a common export and exchange format for laser scan data, allowing teams using different software to work with the same 3D datasets.
Benefits
- Open, widely supported point cloud format.
- Stores points, colour, and imagery together.
- Handles very large scan datasets.
- Reliable exchange between software.
- A stable, standardised way to archive scans.
Related Terms
- Point Cloud
- Terrestrial Laser Scanning (TLS)
- LAS/LAZ
- PLY (Polygon File Format)
Frequently Asked Questions
What is an E57 file used for?
It is used to store and share 3D point cloud data, along with images and metadata, between different software programs.
Why is E57 widely used?
Because it is an open, well-documented standard supported by many programs, making scan data easy to exchange.
What data does an E57 file contain?
It contains point cloud data with position and often colour or intensity, plus any linked images and capture information.
How does E57 compare to LAS?
Both store point clouds, but E57 is designed to also hold imagery and is common in terrestrial scanning, while LAS is widely used for LiDAR and aerial data.
About Track3D
Track3D helps teams work with point cloud data in formats like E57 to build accurate digital twins. Learn more at Track3D.
