McElhanney Land Surveys Ltd. Merges with SarPoint Engineering
3D Laser Scanning \'thré dé 'lá-zer 'skan ng\ [verb]
To safely. accurately and efficiently collect as-built data for a true 3D representation of an existing environment. Minimize personnel exposure to risk and speed up data capture in mining, transportation and industrial surveying.
Terrestrial 3D Laser Scanning
SarPoint Engineering specializes in 3D laser scanning for a wide range of applications, including as-built surveying, architecture and cultural heritage documentation, topography and mining, monitoring and civil engineering, and transportation. SarPoint is recognized as a pioneer in the successful application of this technology in Western Canada’s resource and infrastructure industries.
- As-Built and Design: When it comes to refitting oil and gas plants and other facilities, no other company can help engineers achieve better results than SarPoint Engineering.
- Architecture and Cultural Heritage Documentation: We understand that details count when delivering development plans for historic sites that must meet strict government guidelines. Laser scanning delivers detailed façade and internal renderings of historical buildings with unmatched precision, determining elevation changes and shifts in floor levels.
- Civil Engineering and Monitoring: Laser scanning captures all aspects of the existing infrastructure, including power lines, signage, landscape, curb and gutter, lane locations, median locations and overhead crossings - giving engineers the necessary information to plan new development or transportation corridors.
- Topography and Mining: Our long-range laser scanners can capture detailed data from large, open areas, as well as above- and below-surface mining operations. This means improved site safety, and eliminates the need to disrupt operations during scanning. We use medium-range scanning to survey below-surface mining operations, generating the data necessary to ensure operational safety and maximize cost efficiency.
Mobile 3D Laser Scanning
SarPoint operates a unique engineering-grade mobile mapping system which allows the collection of high-density, high-accuracy 3D point data, along with accurately georeferenced digital photography. Laser-based point cloud data is collected while moving by a module installed on top of a truck. Four specially-calibrated cameras mounted on the module capture photography at specified intervals which allows for point colorization and asset identification.
This mobile collection ability is a key advantage that allows topography and asset information to be collected rapidly, and safely, without requiring road closures or interfering with the normal flow of traffic. Data is collected up to 100 meters on either side of the vehicle and is typically accurate to approximately 2 cm, which is equivalent to that of conventional, manual topographic surveys. In addition, unlike conventional surveys, data collected is extremely dense, usually comprising of one point collected every 1-3 cm. This allows for exceptionally detailed 3D point clouds to be created, as shown below.
Unlike GIS-grade mobile mapping systems, which provide data accurate to approximately 10 cm, point clouds provided by SarPoint are rigorously QA/QC’d through control ties made in the field to ensure they meet survey-grade requirements, Data is also cleaned of car noise and other unwanted artifacts to simplify use by third parties.
Key features of mobile data collection with the SarPoint system are as follows :
- Rapid data collection. Data is collected at the speed of vehicle travel. This allows data collection without interrupting the flow of regular traffic and minimizes road disruptions.
- Accurate three-dimensional data. Three dimensional point accuracy is 2 cm (1s) under normal operating situations, which is equivalent to that collected by conventional methods.
- Dense data collection. Point spacing in cloud is at 1-3 centimetre level, which allows great detail to be captured.
- Simultaneous, georeferenced photography collection. 360o, high-resolution photography is collected while driving, allowing analysts to simultaneously use photography and point cloud data.
- QA/QC’d data delivery. All point clouds are compared to control survey data collected in the field. This ensures that point clouds are fit for use, and of known and consistent accuracy.
- Standardized extracted features and ability for future data mining. Base features (DEM, edge-of-pavement, etc) are extracted from the cloud in the area-of-interest for direct incorporation into CAD packages. Additional features can be extracted at a later date as required.
- Complete data set comprises a thorough baseline capture of the area of interest, which may allow for dispute resolution at later dates.
- Data set allows very realistic modelling and rendering of road way prior and after construction for visualization and open-house purposes.
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Land Surveying/ Engineering
#6, 3530 - 11A Street NE
Calgary, AB T2E 6M7
ENV Field Services
6139 - 80th Street NW
Edmonton, AB T6E 2W8
Laser Field Services
1320 Lakeshore Road
Sarnia, ON N7S2L8