Category Archive: LiDAR

Oct 28

Cutting Culverts into Lidar DEM’s

Lidar has become an important tool for management of water resources and for designing mitigation efforts for localized flood events.  While regional issues have driven topographic mapping efforts for counties, watersheds, and floodplains, the high accuracy and high definition Lidar surface models are now being applied to micro-drainage solutions.  However, the lack of culvert information with these surface models can present an issue for proper …

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Oct 07

Topographic Change Detection Models from LiDAR

Using multiple LiDAR surface models for detecting and monitoring change in topography over time.  by Mike Seidel (Geospatial Services Technician) and Jason Krueger (Project Manager) Local government entities are building new applications for Lidar that go far beyond the typical stormwater and floodplain applications. For example, we have written several articles on this blog site about vegetation and building extraction …

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Sep 01

Remote Sensing to ID Ash Trees in Urban Forest near Chicago, Illinois

Multispectral Imagery, Aerial LiDAR, and Ground Truthing Provide a Full Picture of an Urban Canopy By Jason Krueger, Ayres Associates; Jason Carlson, Applied Ecological Services; and Dr. Fugui Wang, Applied Ecological Services The greater Chicago region has been deeply affected by the Emerald Ash Borer (EAB) – an invasive species that has done considerable damage …

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Jul 15

Ayres stays current with national standards for Wisconsin mapping projects

  New ASPRS standards adopted for 3DEP and other geospatial programs has impacts in Wisconsin; procedures already in place for ongoing WROC projects. Our Aerial Mapping Group spent some time in early 2015 to prepare for changing standards in LiDAR and orthoimagery. In November of 2014, the American Society for Photogrammetry and Remote Sensing (ASPRS) …

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Jul 08

HD Laser Scanning to Support Broad Services at Ayres

HD laser scanning is among the many services available at Ayres Associates. Our extensive history of supporting diverse engineering applications allows us to approach each project as a unique mission with an individualized solution. Because Ayres Associates incorporates the experience of many disciplines in the implementation of the HD scanning technology, your project and budget …

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Jun 08

Illinois GIS Consortium: Value through Collaboration

An invitation to municipalities in the greater Chicago area to participate in this high accuracy aerial mapping program. With the completion of the 2015 GIS Consortium (GISC) flights and with production in full-swing, communities are already preparing their mapping budgets for 2016 and beyond. GIS Consortium Members The GIS Consortium (GISC) is a group of local …

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May 05

WROC 2015 imagery and lidar acquisition complete

On Thursday (April 30, 2015) the final flight lines of the Wisconsin Regional Orthophotography Consortium (WROC) 2015 mapping program were flown. The WROC contractor team of Ayres Associates and Quantum Spatial deployed 10 aircraft with precision aerial sensors over dozens of counties to capture the imagery in a short window of opportunity after snow had …

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Apr 27

31,211 Square Miles of LiDAR in Wisconsin

Since 2004, Ayres Associates has provided aerial LiDAR services for 41 Wisconsin counties.  We’ve acquired over 6,500 square miles of LiDAR in 2015… and counting! For over a decade these LiDAR projects have supported a wide range of applications around the State- from floodplain delineation to forestry analysis.  While designed to meet FEMA accuracy standards for floodplain analysis, counties …

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Apr 23

Another Successful Aerial Imagery & LiDAR Flight Season for GIS Consortium

Ayres Associates wrapped up another year of aerial imagery and LiDAR missions for the Illinois GIS Consortium.  This marks 15 consecutive years of aerial mapping missions for these Chicago area communities.   Digital Aerial Imagery Approximately 90 square miles of high resolution aerial imagery was acquired this spring using an UltraCAM Eagle digital imaging system. The …

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Mar 13

GIS Consortium featured in Spring issue of TRENDS

The GIS Consortium and the Village of Tinley Park, Illinois are featured in the current issue of TRENDS. “Supportive solutions: GIS Consortium provides cutting-edge data to impacted communities” By Bob Brown Read the article here:       The Illinois-based GIS Consortium (GISC) is a group of 29 communities in the Chicago region that …

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Jan 07

LiDAR Video from NEON

Here’s a new video from National Ecological Observatory Network (NEON) that does a great job of describing basics of Lidar technology: “How Does LiDAR Remote Sensing Work?”:          

Oct 10

Tracking Impact of Emerald Ash Borer from Aerial Imagery

Ayres Associates is providing specialized infrared aerial imagery and LiDAR tools for urban tree canopy analysis in the Chicago area. Municipalities are taking extraordinary measures to deal with the impacts of the Emerald Ash Borer on urban forests. Aerial imagery may provide a useful tool for detecting dead and dying trees and for tracking the decline in the tree …

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Sep 14

Surveying Steamboat Lake – Above and Below the Water Line

Merging Bathymetric Survey and Aerial Lidar             Ayres Associates is supporting the analysis of the Steamboat Lake with integrated bathymetric and aerial Lidar survey.  Working with GeoSurv Inc. of Lafayette, CO, Ayres conducted a survey of the lake bottom and sub bottom – merging the data with topographic mapping collected …

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Aug 31

3D Urban Modeling in the Chicago Suburbs

Advancements in Lidar processing tools and techniques are enabling new 3D modeling possibilities for GIS. Ayres Associates acquired high density Lidar of Tinley Park, Illinois in the spring of 2014.  The primary objective of the project was the development of 1-ft interval contours and a bare earth surface model for stormwater management applications.  However, there is …

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Aug 26

HD Scanning – Another Tool in the Toolbox

In addition to providing high accuracy survey, HD Laser Scanning enables workload and staffing flexibility for the Geospatial Division. HD Laser Scanners create a highly detailed and precise point cloud.  After collecting and calibrating the data in the field, the work of measuring and extracting the detailed information for CAD drawings occurs back at the office.  This workflow represents a high …

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