3D Laser scanning services & As-Buit Surveys

We rebuild the geometry of elements and infrastructures using 3D laser scanner technology

Data collection 3D laser scanner

Laser scanning is a widely applicable technology for a number of industries. However, adoption in the architecture, engineering and construction sector is comparatively incipient and the potential benefits during the execution of projects and for the operations and maintenance of existing assets have not yet been fully exploited.

With the increase in technological advances in 3D laser scanning and building information modeling (BIM), the architecture, engineering and construction industry is experiencing a new scientific and technological revolution comparable to the introduction of CAD. The 3D laser scanner allows us to measure any complex construction, regardless of the stage in which the project is located, and when it is integrated with BIM it allows to considerably improve the quality inspection and acceptance levels of a project.

Distance measurement:

The scanning systems mainly capture the physical position of a target object, represented as a series of points (forming a "point cloud"), usually in Cartesian coordinates (XYZ). This is achieved by comparing the pulse of light emitted and returned, and determining the value of the objective object t in relation to the position of the scanning instrument.

The scanner calculates the position by measuring the angle of the scanner assembly (scanner head and reflector) and the travel time of the light (measured directly as in flight time scanners, or indirectly, as in light-based scanners). in phase).


Color and intensity:

The scanner also records a measure of the return energy (represented as an intensity value) from the surface, which is a function of the characteristics of the target surface and ambient light conditions. Most scanners have the ability to determine the color of each point by using a camera (can be incorporated or separated), which is represented by the scale of values ​​RGB (red, green, blue) commonly used. Because scanners are optical systems, only what the scanner can "see" is captured, so scanners can not go through walls or other obstacles (these create "shadows" in the cloud of points where data is not captured) . In fact, the integrity of the data depends on the environmental conditions during the acquisition, as well as the intensity and color data, which vary according to the lighting conditions.

 

Point clouds:

The measurement values ​​are represented by a file format that expresses the position, intensity and color of each individual point in the point cloud. Ultimately, the data can be encoded in a variety of point cloud file formats (ASCII, PTS, LAS, E57, etc.), which use some variation in the XYZ / RGB position intensity color scheme . Several hardware and software providers have a proprietary point cloud that can be easily converted according to the customer's needs. It is often prudent for customers to specify deliverable file formats based on the end use of data in negotiation with service providers, especially when data will be integrated with existing information management systems. Customers may consider using a standard file format that is not proprietary, such as the ASTM E57 file format for the exchange of 3D image data to ensure compliance with project needs.

 

 

Accuracy of the measurement

Several factors affect the accuracy of the point cloud data, including instrument capabilities and calibration, and quality control measures. Environmental conditions that affect the integrity of the data include the reflectivity of the surface, the angle between the scanner and the target (angle of incidence), and the range to the target object (the laser beam diverges with distance, so the measurements furthest from the instrument are less precise). 3D scanning service providers are experts in controlling these sources of error, so it is crucial to establish functional performance requirements before field acquisition so that the optimal instrument, the scanning position (s) and the Acquisition times can be negotiated with the service provider to achieve the highest quality deliverables. However, a series of general rules that customers must know to ensure the proper development of functional performance requirements are applied.

 

 

Mobile / aerial systems:

The mobile and aerial scanning systems, where the scanner is mounted on a moving vehicle during the measurement process, capture additional data about the movement of the vehicle to compensate for the movement. A global navigation satellite system (GNSS) detects the position and speed of the scanner, an inertial measurement unit (IMU) detects the attitude speed and acceleration of the scanner. This information is stored and processed during the data acquisition process, and then the processing. The software generates a point cloud file with the adjusted physical positions, which allows the project teams to capture data very quickly from the physical environment without having that mobilize the team several times. Additional data, such as environmental conditions during the data capture time, as well as calibration and service provider data, may also be linked to the data set. Aerial and mobile scanning is fast becoming the standard method for creating digital city models, documenting road networks, tunnels or power lines, and other infrastructure measurement initiatives.

Scanning complete buildings, Laser scanning, BIM, Reverse engineering, architecture, point cloud, LIDAR, Laser scanning services, Barcelona, Spain
Scanning complete buildings, Laser scanning, BIM, Reverse engineering, architecture, point cloud, LIDAR, Laser scanning services, Barcelona, Spain
Scanning complete buildings, Laser scanning, BIM, Reverse engineering, architecture, point cloud, LIDAR, Laser scanning services, Barcelona, Spain
3D laser scanning of buildings in Architecture

Whether it is a new or old building, industrial or civil, the 3D laser scanning method is the easiest and safest way to obtain accurate construction data and achieve fast results with the best quality / price ratio.

The data obtained in the 3D laser scanning process allow a detailed analysis of the building such as facades, walls, etc., regardless of the complexity of the architecture or the accessibility of the space.

The information scanned in 3D is accurate and useful, being a real help for any specialist in the field: architect, designer, engineer or builder. With the data scanned in 3D, it is possible to make very easy and low-cost interventions in the building and quickly detect the various problems of the structure or facade that occurred over time.

At the same time, the data obtained from the 3D laser scanning of the building can be accessed at any time without the need for additional visits.

Where is the 3D building scanning method applied?
  • New buildings

  • Antique buildings

  • Civil buildings

  • Industrial buildings

Products that can be obtained from 3D laser scanning:
  • Classic Mapping:

    • Architecture plans

    • Blueprints of the floor

    • Level Plans

    • Sections

    • Elevations

  • Ortho-images of Facades

  • Horizontal / vertical sections on the facade.

  • 3D plant model

  • 3D Model / Mesh Model

Use of 3D laser scanning in building analysis:
  • Monitor, analyze and evaluate degradations, inclinations, deformations and verticality of facades, structures and building.

  • Quick study of the degree of degradation of elements regardless of the accessibility of the surface to be analyzed.

  • Creation of BIM projects thanks to the precise acquisition of 3D data.

  • Quick access to all the information about the project: 3D model, plans and sections.

  • Time saving in the field work, the data is taken with pinpoint accuracy from the first visit.

  • 3D / 2D model generation due to its compatibility with any CAD software.

  • Get a detailed analysis of any contactless area of ​​the surface of the scanned object.

  • Data can be taken from a wide range of distances of up to 330 m, even in conditions of extreme or total darkness.

  • Actual evaluation of construction work progress through 3D laser scanning in phases.

  • Precise comparisons of the building before and after modifications or rehabilitations.

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