LiDAR Lunch and Learn Seminar – GITA

LiDAR Lunch and Learn Seminar

You are invited to a LiDAR Lunch and Learn Seminar presented by the Carolinas GITA Chapter. The seminar is a high level overview of current LiDAR technologies including both aerial and mobile-based systems. The seminar is designed to give the audience a firm understanding of how LiDAR works and potential applications. LiDAR is quickly becoming a valuable tool in the day-to-day operations for utilities, telecommunications, engineering and government agencies. Join us and learn how this technology may be able to drive value and efficiency into your organization. Lunch will be provided.

Date:       July 22, 2011
Time:      10:00 am – 2:00 pm
Where:   Piedmont Natural Gas
                    4720 Piedmont Row Drive
                    Ground Floor – Meeting Room B
                    Charlotte, NC 28210-4269
Parking: Free – Garage located on Piedmont Row Drive
Cost:        $25 for members /$35 for non-members
                    $10 students with a valid ID

Please register at http://gita.org/chapters/carolina/carolina_events.asp, payment can be made online using a credit card or please mail checks to Rob Floyd at Piedmont Natural Gas, 4720 Piedmont Row Drive, 6th Floor, Charlotte, NC 28210-4269. Please contact Rob at Robert.Floyd@piedmontng.com or 704-731-4311 with registration or event questions. Please register no later than Tuesday, 7/19/11; space is limited.

About GITA: The Geospatial Information & Technology Association (GITA) is a nonprofit educational association serving the global geospatial community. Visit http://www.gita.org/ for more information.

About GITA Carolinas Chapter: The Carolinas Chapter serves both North and South Carolina promoting the advancement of education in our local geospatial community. Our organization supports local GIS events, encourages networking, sponsors an area scholarship and helps find intern opportunities for students. Visit http://www.gita.org/chapters/carolina/carolina.asp for more information.

This seminar is eligible towards GISP credits.

When accuracy matters…

Sanborn Mobile Mapping solution couples cutting edge technology with experienced and skilled staff which provides the best value and a superior product.

Derived surface model with extracted transportation and utilities features

Sanborn Mobile Lidar Collection of Island in South Pacific

Sanborn recently returned from the South Pacific with our Lynx Optical mobile terrestrial LiDAR sensor.  With a collection that took about 2 weeks, resulting in extremely high density point cloud data near 3500 points per square meter.  A total of 5 major villages with nearly 10 linear miles.  Both LiDAR data and RGB images, soon to be stitched into geo-referenced image sequences allowing for sophisticated extraction and modeling to be used for various end uses.

Remote Sensing for Coastal Management – NOAA CRC

The Coastal Resource Center – CRC has developed a valuable informational website. The CRC is part of the US National Oceanic and Atmospheric Administration – NOAA. As the name implies their focus is on research in the coastal regions where they have established an outstanding track record.

http://www.csc.noaa.gov/crs/rs_apps/sensors/lidar.htm

Calibration by Mobile

There has been several conversations at conferences about calibrating airborne systems using Mobile LiDAR systems. It seems that this would be a very effective way to calibrate an airborne system. It would greatly improve the validation of the horizontal accuracy as well as checking the vertical assessment of the data. Additional comments on the use of the intensity from mobile systems to refine the intensity tables of the airborne systems. The critical component being the wavelength of the mobile verus the airborne.  Any inputs on this subject would be welcome.

LiDAR Links

Please note that links to some important LiDAR locations have been added to the right side bar of the blog under LiDAR Technology. We will be adding additional links over time.

Pitch Slope Error

The following is an image of two opposing flight lines and the white arrows indicate the pitch slope error at the edge of scan.

LiDAR Calibration

Calibration of LiDAR data is the most difficult process to perform when developing LiDAR data. It doesn’t matter if you have any one manufactures type of system. Each system has its own characteristics. It doesn’t matter if it is the same make and model. The results from the sensors will vary. The inconsistent variable is Roll. Roll changes continually on most systems. Some systems hold calibration better than other but it seems the calibration needs to be checked continuously. The second most inconsistent variable is the pitch and then depending on system the scan factor error and pitch slope error. Typically, I have never seen a needed adjustment to the yaw once it is set by any manufacture. There are several variables that should not be adjusted in calibration or only adjusted by the manufacture. Typically, these variables will be provided by the manufacture. Comments regarding this subject are welcome.

Sanborn Using Optech’s Mobile Mapper

http://www.optech.ca/091211.html

New system technology

Leica announced at this ILMF 2010 conference that they would be introducing new LiDAR technology sometime this year. Optech announced the new Pegasus HD400. It will be interesting to see what Leica has to offer in relationship to the new Optech Sensor. Any additional comments or information on other companies technology would be welcome

For more details on Optech’s new sensor please go to:

http://www.optech.ca/091110_new_altm_platform.html