What Is A Point Cloud?
Point clouds refer to a data set consisting of hundreds of millions of discrete points, each with its own Cartesian coordinate (x, y, and z values). The resulting “cloud” forms an image representing the shape or object.
The point cloud has “depth” and can be viewed from any angle. It can be sliced, measured, and otherwise manipulated to obtain specific data. Each point gains significance in the context of its surrounding points but does not have further attributes on its own.
The distance between points in the cloud can be likened to the resolution of a digital image. The closer the points, the denser the image, allowing for more data to be stored and conveyed.
Point clouds can be combined and joined to create even larger point clouds.
What We Offer
At Clement & Reid, we offer comprehensive point cloud surveys that deliver highly detailed and accurate 3D representations of any project site. Our advanced technology ensures high-resolution data capture, enabling accurate analysis and informed decision-making. Trust us to provide reliable and scalable point cloud solutions that meet the specific demands of your project.
Tailored Solutions
We ensure that every point cloud is customised to meet the specific needs and challenges of your project, delivering clear and actionable insights.
How Is A Point Cloud Used?
We rectify and join point clouds to create a project-sized point cloud based on our control points. The resulting point cloud can be utilised in various ways:
Imported into Revit to generate a project model (Scan to BIM)
Used to create 3D drawings, generally in AutoCAD, to represent surveys
Employed to produce 2D survey plans
3D survey plans, which include heights, are essential for topographic surveys and measured building surveys where embedded heights are necessary. In contrast, 2D survey plans, lacking height data, are used for measured buildings and topographic details.
Highly detailed drawings can be generated from the point cloud, which is invaluable for activities such as documenting historical buildings.
We utilise multiple Leica scanners to capture the data you need and can prepare registered and geo-referenced clouds in both monochrome and colour to suit your requirements.
Point CloudsFAQ
How is a point cloud created?
A point cloud can be created in a number of ways, with two primary methods used in surveying:
- Lidar: from laser scanners, whether terrestrial or airborne.
- Photogrammetry: derived from drone or satellite imagery.
For survey purposes, point clouds are usually combined and require control. This control ensures that measurements remain accurate, maintaining straight lines and consistent distances. Without control, combined point clouds may bend and warp, deviating from reality.
Point clouds can be viewed and manipulated using many software applications.
How long does it take to create a point cloud?
A terrestrial laser scanner can typically generate a 360-degree point cloud in just a few minutes, capturing millions of data points. The scanner can be then moved to the next location to repeat the process. The resulting point clouds will contain overlapping data, but not identical points, which are essential for “cloud to cloud” joining.
Processing the captured data is the more time-consuming part of the process.
How accurate are point cloud surveys?
Point cloud surveys are highly accurate. At Clement & Reid, our advanced technology and skilled team ensure the highest level of accuracy in capturing 3D representations of your project site.
What are the benefits of a point cloud survey?
A point cloud offers numerous benefits, including:
- High Accuracy: It provides precise and detailed 3D representations of the surveyed area, ensuring accurate measurements and analysis.
- Comprehensive Data Capture: Millions of data points are collected quickly, capturing even the most complex structures and surfaces.
- Versatility: Point clouds can be viewed from any angle, sliced, measured, and manipulated to extract specific information.
- Improved Decision-Making: The detailed data helps in making informed decisions during the planning, design, and construction phases.
Do I need a point cloud survey for my project?
A point cloud survey can be highly beneficial for your project if you require accurate and comprehensive 3D representations of your site. It is especially useful for complex structures, large areas, or when accuracy is critical for planning, analysis, or construction. If you need high-resolution data to make informed decisions and ensure the success of your project, a point cloud survey is a valuable investment.