Optical Metrology of Boat Hulls

Optical Metrology of Boat Hulls

3D scanning for marine projects

Physical Digital® uses the industry-leading GOM 3D optical scanning systems to capture and measure the data from boat hulls for a variety of purposes. The data achieved by this high accuracy optical measurement can be used to carry out quality inspection or to create 2D drawings or 3D CAD models for optimisation or remanufacture.

External Of Boat Hull

3D Scanning of Boat Hull Project Objectives

• Quick and accurate capture of data from boat hulls using GOM ATOS and TRITOP systems

• High resolution measurement and inspection with verified accuracy

• Creation of high quality CAD model through reverse engineering

3D Scanning Techniques

When carrying out 3D scanning on boat hulls, the following steps and systems are used:

Photogrammetry:

Using the GOM TRITOP photogrammetry system to capture reference points placed around the hull reduces any deviation associated with the scanning system. The photogrammetry system works by calculating the centre of the circular reference points using several images captured using a high resolution DSLR camera.

Calibrated carbon fibre scale bars are used to define a relative scale for the photogrammetry measurement. The point cloud generated from the TRITOP system is used to precisely locate the scanning system around the hull to avoid any further deviation associated with adding multiple measurements.

High resolution capture of 3D scan data:

The ATOS scanning systems use a blue light projector and stereoscopic cameras to capture high resolution surface data of the boat hull. GOM ATOS systems can recalibrate to various measuring volumes depending on the size of the object being measured. This allows the data capture of large boats in a short space of time.

Boat Hull Outline Data


Once the data has been captured, the inspection back to CAD is quickly achieved using ATOS Professional software.

Length of Project:

The amount of time it takes to capture a boat hull depends on the overall size of the object and the resolution required to capture the features. Many projects can be completed over one working day but more time may be required for particularly large or complex objects.

Output of scanning:

The output from the scanning process is a high-resolution polygon mesh as an STL file. This can be aligned and inspected against existing CAD geometry using the GOM Inspect software. From this our engineers can create an inspection report focusing on overall deviation or the geometry of particular features and how they compare to the designed model.

Boat Hull Outline With Cover CAD Data

The alternative is to recreate the scanned file but with perfect geometry in a CAD package. This will ensure that the model has symmetry along the centreline and that any geometric features are recreated exactly. This service can be completed by our in-house design engineers who are fully trained in Siemens NX.

Easy to interpret report:

Using GOM inspection software, Physical Digital provides printable, easy to interpret 2D reports, using industry-specific or customer-specific templates. One of the many advantages of the GOM optical measurement system is that it offers image mapping technology to provide real life visualisation of quality inspection results. This feature provides fast data interpretation, giving the real life context of the results, which enables non-technical personnel to understand the reports.

Our specialist team is able to 3D scan, inspect and reverse engineer boat hulls with a high level of accuracy. These same techniques can be used to ensure YOUR project is completed quickly and accurately to save you time to market. Speak to our expert team on 01483 750200 or email info@physicaldigital.com for further details.




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