Photogrammetry and Digital Mapping Services are the hallmark of Spencer B. Gross, Inc. We operate analytical and softcopy stereo-plotter workstations designed to produce high quality mapping systems. These map products are designed for engineering, design, monitoring, and GIS applications. Our production environment prepares mapping data for every common CAD and GIS application. Spencer B. Gross, Inc. has become a recognized leader in Digital Photogrammetric Mapping and Digital Orthophoto Production, developing a reputation for high accuracy photogrammetric mapping to support 1”=20 ft. scale engineering applications. Our constant investment in new technology allows us to update and innovate so that we can offer our clients the best quality mapping available. Several transportation and light rail projects have been designed and built successfully based upon SBG mapping.

 

The photo above shows a portion of the 20 mile corridor project: T-REX, Denver, CO. mapped in the year 2000. The accuracy achieved was: 0.1 ft. RMSE.

The photo to the left delineates the six mile mapping corridor for the Portland I-205 Light Rail project dated 1997. The topography was field-checked to an accuracy exceeding: 0.2 ft. RMSE. In the lower portion of the same photo, you will notice the Portland Airport runways that were mapped with extremely high detail; this data was field-checked to an accuracy of: 0.02 ft. RMSE.

 

• State-of-the-Art Software and Hardware Extremely knowlegable staff
• Experienced Project Managers Cartographers with over 100 years of know-how
• The same Digital Orthophoto team that introduced the technology to the northwest in 1986
• World Class LIDAR Analysts. Innovative approaches to new projects: Resulting in higher quality products while maintaining the established budget and schedule.
• Unique project management method: Full-time professional positions dedicated to managing large projects.

• Planimetric and Contour Mapping
• DTM Collection for Contour Generation and Volumes Engineering
• Planning and Forestry Applications
• City Mapping
• Deliverable in many formats including Microstation, AutoCAD and ArcInfo formats