Terrestrial Laser Scanning
With our RIEGL VZ-400 3D Terrestrial Laser Scanner, Thew Associates can provide static 3D laser scanning services for our clients. We can complete high-definition survey scans of most sites providing comprehensive three-dimensional spatial and elevation data with decreased data collection time and increased cost efficiencies.
- Interior and exterior structure scanning for renovation and restoration
- As-built surveying and mapping
- Topographic surveying and mapping
- Structural deformation monitoring
- 3D point cloud data with RGB assigned color values
- True 3D mapping with digital terrain modeling
- Traditional 2D mapping with elevation data
- Point cloud viewer application capable of extracting measurements
UAV LiDAR
The RIEGL miniVUX-1 LiDAR sensor that Thew Associates’ utilizes is equipped with a RGB camera which allows us to provide a high density colorized point cloud to clients. The general output of a LiDAR sensor is a .LAS file. This file contains vector data for every point within the cloud. Therefore, many different “Layers” of data can be extracted from the .LAS file. These layers can be translated to different types of GIS formats such as 3D Face, 3D Mesh, vectors, TIN’s, DSM’s, DTM’s, break lines, planimetric lines, etc.
- Raw Point Cloud – Attributes include: XYZ, Intensity, Return #
- Classified Point Cloud – Attributes include everything from Raw Point Cloud plus unique classification of buildings, vegetation, powerlines, utility poles, ect.
- Extracted features – Buildings, trees, etc.
- Rasters – Digital Elevation Models, Digital Surface Models, and Intensity rasters.
- Contours (GIS or CAD formats)
- AutoCAD breaklines and feature
UAV Photogrammetry
With the LiDAR sensor integrated with the RGB camera, Thew Associates can deliver high-quality imagery data of a client’s project site. Thew Associates’ UAV pilots can also capture video in areas that are not safely or easily accessible otherwise.
- Orthomosaic
- RGB point cloud
- Digital Surface Model (DSM)
- Digital Terrain Model (DTM)
- Planimetrics
Airborne LiDAR and Photogrammetry
Thew Associates is committed to managing all aspects of a client’s geospatial requirements to include LiDAR and photogrammetry surveying and mapping of larger project sites. We have longstanding relationships with aerial mapping firms whom we partner with to collect the LiDAR and aerial imagery and then manage the data processing in-house.
Michael P. Merithew, PLS
315.386.2776
mmerithew@thewassociates.com
Projects
Michael P. Merithew, PLS