About Me

Contractors Can Improve Your Home

Hello! I would like to give you the warmest welcome to my blog. My name is Pete and last year, I decided to carry out some home improvements. Somewhat foolishly, I decided to try and carry out the work myself. As you can imagine, it was a bit of a disaster as I do not have many skills. Thankfully, I have a friend who works in the construction and contracting service. He called in some of his friends who were able to come in and fix up the mess I had made. I am really pleased with the results so I thought I would write about it here.


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Contractors Can Improve Your Home

3D Laser Scanning: Working Principle and Applications

by Regina Barnett

At first glance, 3D laser scanners seem to be performing truly magical activities. They are capable of using a series of laser beams to essentially recreate 3-dimensional structures. Behind the outward appearance of laser scanners is a complex, yet interesting working principle that has numerous applications.

Laser scanning has given rise to more efficient engineering processes, and the more effective construction of buildings and other similar structures. 

Working Principle

A laser scanner mainly works through controlling and steering laser beams. The laser beams are used to take precise measurements of distance and depth in 3-dimensional structures. Effective laser scanning often requires several scans to arrive at the desired final blueprint.

The process is useful in construction and engineering because 3-dimensional models of proposed structures can be created before the work begins. For laser scanning to be useful, the scanning process needs to be accurately carried out. A quality laser scan is dependent on 3 main principles:

  • The time of flight

The amount of time that an impulse of light takes to arrive at an object and back is referred to as the time of flight. The accuracy of a sensor that measures the time of flight directly influences the accuracy of the scanned object.

It also determines how far an object can be from the scanning equipment before accurate readings can be taken.

  • Triangulation readings

Triangulation is a laser scanning working principle that complements the time of flight measurements. With triangulation, a camera is used to track the location of the laser dots that are projected onto a scanned object.

The data collected is effective at determining the actual distance of objects when they undergo a 3D scan.

  • Point Clouds

Perhaps the most effective working mechanism of 3D scanning is the use of point clouds. Point clouds refer to a set of data points that are present along a 3D coordinate system (The X, Y and Z plane). Point clouds refer to scans that are taken along this coordinate plane and are spaced out into a 3-dimensional space.

The core parts of the scanned object are assigned to specific points on the Cartesian plane and a 3-dimensional structure can be produced.


The applications of 3D scanning are extensive. It can be used to plan for a proposed structure such as a building, bridge, or roads. 3D scans can be taken on the existing site and a model of the structure can be proposed.

With accurate 3D scanning data from the working principle methods above, an accurate and reliable scan can be obtained to assist with the planning process of proposed structures.