By Hexagon | Leica Geosystems

HomeHow To and AdviceBuilding ConstructionThree Easy Steps to Bring Reality to BIM with...

LASTEST POSTS

Three Easy Steps to Bring Reality to BIM with Scanning

Before diving into point cloud formats and how to use them, it’s worth starting with an overview of how scanning works. Although this article primarily focuses on Leica Geosystems reality capture solutions, the same procedures also apply to other modern laser scanners.

Scanning happens via a laser scanner, which is ideally set up on a tripod and can be compared to a total station in terms of size. However, unlike a total station, there is usually no scope, and the instrument can be operated almost entirely by one person. To scan once is a relatively quick procedure (5-10 minutes). However, more commonly you’ll need to setup/scan multiple times to capture the entire space.

The basic steps to scanning a space are as follows:

1. Orient and set up targets
This can mean a number of things depending on the equipment, but you’ll want to orient your laser scanner to known control points in the project whenever possible. This is critical for almost anything you want to do with the scan once it leaves the scanner. From there, you’ll set up targets (or known points, depending on the equipment) which will help you “stitch” together multiple scans once you’re back on the computer.

2. Scan the area
Again, several set-ups may be needed to avoid gaps in the scan. You will inevitably see circles on the floor where you’ve set up the scanner. This is because nearly all scanners can capture 360 degrees in the horizontal axis but stop short in the vertical axis at about 270 degrees due to the base of the scanner (and tripod) being in the way.


3. Convert to a 3D model
This typically starts in a program like Leica Cyclone software, which is perfect for stitching together scans, reducing the density (as needed), and also cleaning up the extra points you may not want. From a program like Cyclone, you can export out a number of formats to be used in many modeling programs either to supplement other 3D models or aid in modeling based upon the point data. There are also solutions that will automatically create a model for you based on your point cloud and a little initial input.

Some contractors have limited means to produce their own point clouds and often look for help from local surveyors near their projects. If you own many BIM authoring programs, you could ask for a single point cloud file. However, many surveyors are beginning to offer in-house modeling as well for an additional cost. This can be an attractive option if you’re looking for a head start.

Most Read

LASTEST POSTS

RELATED ARTICLES

Dirtlife: We Don’t Need Blade Wax

In this episode of The Dirtlife podcast, Scott Colclough sits down with Justin Brilman of Sub-Terrain Excavating & Trucking Ltd. (STX) to talk about...

How Laser Scanning is Changing Construction Teams and Workflows

Laser scanning plays a pivotal role in reshaping how projects are executed and how teams operate. The technology is not just a tool but a...

3 Reasons Contractors Stay Loyal to Their Machine Control Provider—And When to Rethink It

In the fast-paced world of construction, contractors are often focused on immediate challenges—solving one problem and moving quickly to the next. With tight schedules...