KEBS,
INC.
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KEBS, |
INC. |
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3D
Laser Scanner KEBS is now providing 3D Laser Scanning to all of its clients. We have purchased the Trimble GX 3D scanner, which is an advanced surveying instrument that uses high-speed laser and video to capture coordinates and image data. The scanner can be used inside or outside on all types of projects from complex refinery piping systems to volumes of gravel pits. At the present time, we are using it for topographical surveys for Hartland Schools, location of columns and ceilings in a factory, and a volume of a gravel pile. The uses for a 3D scanner are unlimited and the time it can save you on your project makes it a win-win situation. Trimble GX 3D Scanner uses a laser scanner to collect points (point cloud) to create an exact 3D model of an object. The Trimble GX 3D Scanner is capable of scanning 360° accurately to 1,148 feet (350 meters). The resulting point cloud appears to be a digital photo, but is actually thousands or sometimes millions of survey points. The 3D models can be rotated 360° for viewing and measuring, and then exported into AutoCAD to prepare drawings. Scanning data is collected using a laptop computer through the use of PointScape Software. The point cloud data is displayed in real-time, therefore, the field crew can ensure that each scan is oriented properly. If some areas are hidden from the view of the scanner, it can be immediately recognized. Those areas can be scanned from another location or additional measurements can be made with conventional survey methods. Data collected using conventional methods can be imported into the point cloud. As a part of the field procedure, the scanner takes a panoramic photo of the site. This photo is used by the field technician to isolate only those areas that need to be scanned. Also, if certain areas required more detail, a separate denser scan can be preformed in those areas. Another benefit of the panoramic photo is that it can be used by the office technician to view any complex areas to help verify what they see in the point cloud. The point cloud data is then processed using RealWorks Software. Each scan can be viewed independently to ensure that each scan is in proper relationship to the other scans. Also, free-floating scans can be “stitched” together using RealWorks. The scans are “stitched” together by moving common objects, such as a building corner, so that each scan is properly aligned. After all the scans are properly oriented, contours, line work, and geometry can be created using RealWorks and exported into AutoCAD.
Recent AdvancesRecent advances in laser scanning technology and software make their use much more surveyor-friendly. Recently developed workflows simulate more traditional surveying procedures. The development of dual-axis compensators greatly reduced the number of targets that were previously required. The dual-axis compensators can detect when the scanner is going out of level and adjustments are made. This eliminates “scanner drift” which was a concern in previous scanners. The weight of the scanner adds stress on the tripod, and the scanner will stop, and alert the user if the tilt is too much for the compensator. Because the newer scanners require fewer target projects, there is greater flexibility on projects with narrow corridors, such as tunnels, bridges/overpasses, and riverbanks. Because the newer scanners are more surveyor-friendly, a project that was not originally set up as a scanning job can easily implement scanning using the same control points as a conventional survey.
LimitationsDense vegetation may obstruct the view of the scanner. In these situations, we have an 11-foot tripod that can be used to see over landscaping near buildings. If this does not solve the problem, conventional surveying methods may need to be used. AdvantagesThe obvious advantage is the ability to see a complete picture of the objects being scanned. The ability of the 3D Scanner to accurately collect data is unprecedented; it is capable of collecting 100,000 measurements per minute with millimeter accuracy. Because the 3D Laser Scanner records every object within its view, it can eliminate the need to return to the site if the scope of work changes. With the “true-color” feature, the point cloud data produces an image with far more visual and spatial information than a 2D photo. Ideal applications of the 3D Scanner are where point-to-point surveys will not capture the necessary detail, or situations scanning can improve safety vs. traditional surveying methods. Also, the 3D scanner can be used to collect off-site data without having to enter a neighboring property.
Traffic Surveys Using a 3D Scanner, a traffic accident scene can be accurately surveyed without having to enter traffic or require lane closures. The scanner can record vital information used to reconstruct and analysis the accident. Information such as sight obstructions (trees/utility poles, etc), road stripping, signs, and traffic signals can all be collected.
Gravel Pits/Stock Piles These types to sites are ideal for scanning. Climbing up and down steep banks is eliminated, and because of the number of points collected, the volume calculations are much more accurate than conventional methods. Contour maps and volume reports can easily be prepared.
Exterior Building Surveys Through the use of the 3D Scanner, detailed information can be collected that was not physically possible using conventional survey methods. The 3D Scanner can be used to survey facades of multi-floor buildings, windowsills, fire escapes, decorative trim or brickwork, etc. If necessary, the scanner can be used to map individual bricks or mortar. A 3D Laser Scan is a valuable tool to the architect during the design of a building addition.
Interior Building Surveys A 3D Scan can be used to create an accurate floor plan for developing a future office space design. The 3D Scan can also collect information that can be critical in design, such as vertical clearances, exposed piping, ductwork, and electrical conduit.
Complex Figures A 3D Scan can be used to collect data on irregular shaped figures. Through the use of the RealWorks Software, a 3 dimensional model can be created using a “shrink-wrap” type modeling. The software creates a triangulated mesh that is used to simulate irregular shaped figures. The gaming industry uses this type of technology to develop the movements of their action characters.
Topographical / ALTA Surveys The scanner can be used to perform topographical & ALTA Surveys. Information such as manholes, hydrants, utility poles, telephone risers, and trees can be seen in the point cloud. This can exported to AutoCAD, and become a part of the finished drawings.
Give us a call to discuss how 3D scanning can benefit you!
Click on pictures below to view larger images : L - 3D mesh and geometries created from Trimble GX 3D Scan of MSU Campus’ Sparty Statue
R - Corner of Cedar St. and Holt Road in Holt, MI
bottom - Laser scan of a sand pile
If you would like more information or a quote for a project, please fill out the information below. Request for Service Form: Required Data Fields Marked With *
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Haslett Marshall Soils and Materials Office
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