Mapdata


Aquaterra has more than 25 years of experience in the Geo-ICT sector. You can contact us for the collection, processing, conversion, distribution and use of all possible geo-information.

We have a specialized team of geo-information specialists who can build large-scale basic data. These are maps on a scale 1/500 to 1/1000 which are digitally created from aerial photographs (photogrammetry or 3D mapping), through Mobile Mapping (vehicles making accurate visual recordings of the street) and / or classical topography (surveyor teams).

The scanning, georeferencing and mosaicing of old maps is one of our specialties. We make them digitally available for research and easy to unlock through websites, map viewers and image banks. Take a look at www.backtothemap.be to see an overview of our possibilities.

Do you have any data to which a geographic component can be linked? We can geocode your mailing lists, link your data to administrative units and make thematic maps with it.

These are just some examples of our expertise. In the references section, you will find a wide selection of representative projects we have produced in recent years. If you have a project where geodata is involved, contact us for more information and advice.

What is Mobile Mapping?
Mobile Mapping enables us to collect large amounts of spatial data quickly and efficiently. We capture the data using a platform, mounted on a vehicle or a rucksack, upon which a laser scanner and a 360 camera is installed. The platform also contains an inertial measuring system (or IMU) and 2 GNSS (Global Navigation Satelite System) antennae. The IMU determines the speed and direction of the platform. With this information we can greatly improve the positional accuracy of the GNSS.

Technology

The scanner measures millions of points along the trajectory travelled. For each trajectory the position and orientation is determined via post-processing. This is subsequently combined with the laser data to obtain a georeferenced 3D point cloud in which each point contains spatial coordinates. The photographs, which are taken throughout the journey, can be used to colour the point cloud.

ROBIN specifications

  • Laser scanner RIEGL VUX-1HA

    The laser scanner employs LIDAR (Light/laser Detection and Ranging) technology. Using LIDAR, the distance to an object is calculated by measuring the time between sending a laser pulse and receiving the reflection of that laser pulse. At a speed of 50kmh the laser scanner can scan up to a distance of 25m with a density of approximately, 500 points per square metre with an accuracy of 3mm.

  • Camera Ladybug 5 Point Grey

    The Ladybug is constructed from 6 5MP cameras. 5 cameras are positioned horizontally and 1 camera vertically. The cameras are equiped with a Sony ICX655 CCD sensor. Each camera records 3 photographs per second.

  • IMU or Inertial Measuring Unit IMU is a system that measures the speed and orientation of the platform. This can be used to improve the GNSS.

  • GNSS antennae

    2 GNSS antennae are used. These provide us with the positioning. In urban areas and areas with many trees the GNSS reception is not always optimal which affects the accuracy of the positioning. For this reason we make use of ground control points. The IMU can also be to compensate for brief losses of GNSS signal.

Advantages

Mobile mapping has a number of advantages:

  • The vehicle drives at a speed of 30km/h to 120 km/h without hindering the traffic flow. The data is recorded as we drive.

  • The entire apparatus can be mounted on a rucksack so that data in places inaccessible to vehicles can also be recorded.

  • Generally, the time required to record is far less than it would be employing traditional land surveying techniques. In a short space of time a large amount of data can be recorded that can be processed later at the office.

  • Data can be recorded once and used many times.

Various applications and end products

The data has many possible applications. Depending on the application, a variety of end products can be made.

The 3D point cloud contains vast amounts of information. It is a complete 3D recording of the journey. It is possible to move around within this point cloud. In contrast to photographs, you are not fixed to the specific position from which it was taken. The 360° images visualise the trajectory and can be processed to aerial photographs. Other end products include other 3D models and animations.

The mobile mapping data can be used for:

  • mapping the existing situation (e.g. as-built plans of the road infrastructure)

  • measuring distances and areas (e.g. width of a road)

  • 3D modelling (e.g. integration of a design in an existing environment)

  • visualisations (e.g. in place of site visits)

  • producing cross-sections of the road infrastructure

Where could you have seen us?

Location

Period

Client

Aalst

08/01/2018 - 26/02/2018

AIV

Aalter

06/07/2018 - 09/07/2018

AIV

Aarschot

30/01/2018 - 13/02/2018

AIV

Alveringem

14/03/2017 - 10/07/2017

AIV

Antwerpen

31/07/2018 - 21/08/2018

AIV

Avelgem

12/09/2017 - 10/10/2017

AIV

Beernem

29/06/2018 - 25/07/2018

Aquafin

Bever

18/06/2018

AIV

Boom

15/02/2017 - 21/02/2017

AIV

Brakel

22/05/2018

AIV

Brussel

20/06/2017

AIV

Deerlijk

24/08/2017 - 25/10/2017

AIV

De Haan

27/09/2017 - 03/10/2017

AIV

Dendermonde

01/09/2017 - 26/02/2018

AIV

Destelbergen

05/02/2018

AIV

Drogenbos

29/03/2018

AIV

Evergem

18/12/2017

AIV

Gavere

25/06/2018 - 02/07/2018

AIV

Gent

30/03/2017 - 08/05/2018

AIV

Herne

21/09/2017 - 22/09/2017

AIV

Ieper

07/03/2017 - 08/03/2017

AIV

Kapelle Op Den Bos

27/02/2018

AIV

Koekelare

09/11/2017

AIV

Kortemark

07/07/2017 - 12/02/2018

AIV

Kruishoutem

04/06/2018 - 02/07/2018

AIV

Langemark-Poelkapelle

31/03/2017 - 30/06/2017

AIV

Lede

24/03/2017 - 27/03/2017

AIV

Liedekerke

11/08/2017 - 11/09/2017

AIV

Lier

21/02/2017 - 02/03/2017

AIV

Lochristi

25/05/2018 - 28/05/2018

AIV

Mechelen

27/02/2018 - 01/03/2018

AIV

Menen

04/04/2017

AIV

Merchtem

5/12/2017

AIV

Meulebeke

22/08/2017 - 12/02/2018

AIV

Middelkerke

09/03/2017 - 21/03/2017

AIV

Moerbeke

03/07/2018 - 23/07/2018

AIV

Moorslede

05/04/2017 - 30/05/2017

AIV

Oosterzele

27/03/2017 - 28/03/2017

AIV

Oudenaarde

10/05/2017 - 23/06/2017

AIV

Ronse

17/11/2017

AIV

Schelle

05/12/2017

AIV

Sint-Niklaas

04/05/2018 - 07/05/2018

AIV

Steenokkerzeel

15/05/2018 - 11/07/2018

AIV

Stekene

16/01/2018

AIV

Tessenderlo

21/02/2017

AIV

Tielt

14/11/2017 - 29/01/2018

AIV

Wachtebeke

25/05/2018

AIV

Wervik

13/07/2017

AIV

Wetteren

10/08/2017 - 10/10/2017

AIV

Wevelgem

22/11/2017 - 28/11/2017

AIV

Zwalm

09/05/2017

AIV

Zwevegem

18/07/2018 - 25/07/2018

AIV

Zwijndrecht

12/01/2018

AIV

Mobile mapping and your privacy

Wat does Aquaterra do with the images?

We use the images to make maps. The camera does not only take pictures, the scanner simultaneously produces a so-called point cloud. This is a file containing millions of points with their spatial coordinates, which allows us to measure within this cloud and to map the area. The images are actually just a complement to the point cloud and help us to define different materials, for example.

Wat does Aquaterra NOT do with the images?

We do not make the images available to the public. We do not sell them, supply them or make them visible to third parties for any purpose. We are only interested in the images to help us create maps. In fact, the people and cars are even a hindrance. As obliged by law, we have declared our activities to the Commission for the Protection of Personal Privacy (the Privacy Commission).

Who has access to these images?

Only specified members of Aquaterra staff have access to the images. They must sign a special clause in their contract in which they commit to not making the images public in any way and to taking all necessary measures whilst dealing with the images to ensure this does not happen. They must also use a password to gain access to them and every time the images are used it is recorded in a register. In this way, we always know who has used which images.

How long do we store the images?

We only store the images for the duration of the project, which is mostly carried out for the government. The minimum time is 6 months and the maximum time is 1 year, after which the images are deleted. If you still have concerns, please contact us via: legal@aquaterra.be