Events currently scheduled
UAV Talk: CRSS Ottawa Chapter & GoGeomatics Christmas Party
CANADIAN REMOTE SENSING SOCIETY (CRSS-SCT) – OTTAWA CHAPTER
Use of Unmanned Aerial Vehicles (UAVs) in Precision Agriculture and in Phenomics Research
Precision Agriculture and the emerging field of phenomics (using high-throughput phenotyping techniques) can be useful in mitigating the effects of the factors listed above. Global Navigation Satellite Systems (GNSS) and Remote Sensing are geospatial technologies that enable the use of Precision Agriculture and phenomics. Traditional remote sensing platforms such as satellite systems and manned aircraft have been used in agriculture for the last few decades. The last few years have shown an increasing interest in the use of Unmanned Aerial Vehicles (UAVs) as a platform for carrying a variety of sensors such as high-resolution RGB cameras, multispectral cameras, and thermal cameras. Engineers are also designing and building UAV platforms that can carry larger sensors such as hyperspectral, LiDAR, and passive radiometer.
UAVs present substantial advantages in agriculture applications in terms of time, cost, precision for both the farmer and the crop scientist conducting research in phenomics. UAV platforms allow for the collection of valuable data over small and medium-sized areas. Vegetation Indices (e.g., NDVI, NDRE, EVI) collected weekly can provide high-resolution (better than 10-cm) information on the vigour of the crops within a field. Crop height can also be extracted from the data and can be used for biomass calculations. Farmers can use this information to optimally manage the application of fertilizers and pesticides. Crop scientists can use this information to design better crop hybrids suitable for specific conditions.
At the joint GoGeomatics Ottawa and CCRS-Ottawa event Dr. Saeid Homayouni (University of Ottawa) and Regie Alam (ASG Mapping Ltd) will do a presentation on their experience this past summer with the use of UAVs in Precision Agriculture in phenomics research.
Date: Monday, December 11, 2017
Time: 6:30 PM to 9:30 PM
Please let us know you will be joining us:
Check back regularly to stay up-to-date on upcoming regional events.
CANADIAN REMOTE SENSING SOCIETY (CRSS-SCT)-ATLANTIC CHAPTER
REMINDER AND HYPERLINK
CRSS-SCT Atlantic Chapter webinar held today
October 19th at 2 pm Atlantic Time
The Polycom video conferencing system is easy to use – just click on the link or paste it into a browser. It will probably ask you to install a little plugin and you shouldn’t need administrator privileges to do that.
The webinar begins at 2 pm Atlantic Time. (I’ll start Polycom around 15 or 20 minutes early in case you’re concerned about working out technical issues).
The next CRSS-SCT webinar will be on: October 19th at 2 pm Atlantic Time
Nathan Crowell of the Applied Geomatics Research Group in Middleton, Nova Scotia, will present their recent work surveying the coast using a topographic-bathymetric lidar system.
We will send out a link to access the webinar shortly (we are using a Polycom system here – it is simple to use but please let me know if you have difficulties with this).
Those who wish to attend, please contact Raymond Jahncke at firstname.lastname@example.org
The Nova Scotia Community College Applied Geomatics Research Group (NSCC-AGRG) has been surveying coastal study areas around the Maritimes using a Leica-AHAB Chiroptera 2 (CH2) topographic-bathymetric lidar system since 2014. The CH2 is equipped with a high accuracy positioning system, two lidar sensors (515 nm, 1024 nm), and a LEICA RCD30 60 MP high-resolution digital aerial survey camera. The configuration of the CH2 allows AGRG to collect and position coincident laser survey data and high-resolution photography referenced to the same processed flight trajectory.
The AGRG has been classifying topo-bathymetric lidar point clouds using standard TerraMatch macros to produce several elevation model products. Recent advances in aerial triangulation techniques (or structure from motion) spurned from the popularity of drones have increased the efficiency and accuracy of identifying coincident pixels present within multiple overlapping images. The positions of these coincident pixels can be mapped (X, Y, Z) by understanding the internal geometry of the camera, external orientation of the platform, and distortion caused by relief and lens inaccuracies. These advances have allowed AGRG to process RCD30 photos into point clouds, similar to those produced by lidar, using Agisoft Photoscan.
This talk will demonstrate how photo point clouds can be used to supplement lidar point clouds to produce more robust and hybridized products that exploit the unique benefits of each sensor. These new products give AGRG the ability to measure and quantify complex physical features in more detail than was previously possible.
The next CRSS webinar is this Friday (June 2nd) at 11:00 AM Atlantic time.
Alex Graham from SkySquirrel Technologies will be presenting a talk about Acquiring UAV Data for Remote Sensing Research. This will be of interest to those who are just getting into UAV image acquisition and would like to understand concepts such as the importance of image calibration, flight parameters, etc. SkySquirrel Technologies Inc. is a crop-analytics company that develops drone-based technology for monitoring crop health, with a primary focus on improving crop yields and reducing costs at commercial vineyards. A link to the webinar (WebEx) will follow.
CANADIAN REMOTE SENSING SOCIETY (CRSS-SCT)-TORONTO CHAPTER Dr. Derek R. Peddle University of Lethbridge
Advances in Forest Biophysical and Structural Inversion using Adaptive and Full Blind Canopy Reflectance Modeling: Applications to Forest Disturbance Detection and Monitoring
Abstract: Regional scale forest biophysical and structural information is required for a variety of natural resource monitoring, disturbance, detection and management purposes. A new approach for using canopy reflectance models (CRMs) is presented that requires no field data or any prior knowledge about the image(s) used, or of the study area. The fully unconstrained Multiple Forward- Mode Adaptive Full-Blind (MFM-AFB) method provides forest biophysical structural information (BSI) and can be used for classification, biomass estimation and spectral mixture analysis at sub-pixel scales – without needing training data, endmember spectra, or model inputs. MFM-AFB is suitable for local, regional, multi-temporal and unknown imagery and areas obtained from any type of optical sensor and platform (e.g. satellite, plane, UAV etc). It may also have applications for reconnaissance and target detection. By eliminating the need for model inputs to infer BSI, MFM-AFB may also help enable more mainstream use of advanced CRMs for image analysis by making them more easy to use. The method will be described and an example application presented using Landsat imagery of forests damaged by a mountain pine beetle (MPB) epidemic in British Columbia (BC) Canada.
Speaker Biography: Dr. Derek R. Peddle is Professor of Geography and Co-Director of the Alberta Terrestrial Imaging Centre (ATIC) at the University of Lethbridge in Lethbridge, Alberta, Canada. His NSERC-supported research program involves innovation in remote sensing software development with applications in forestry, agriculture, mountain terrain analysis, watersheds, and the north. Born and raised in St. John’s Newfoundland, he holds degrees from the University of Waterloo (Ph.D. Geography / Environmental Studies), University of Calgary (M.Sc. Geography), and Memorial University of Newfoundland (B.Sc. Honours Computer Science/Geography), as well as a NASA Graduate Diploma in Earth System Science (USA). Awards include two International Fulbright Fellowships (Univ. California Santa Barbara USA, and NASA Goddard Space Flight Center / Univ. Maryland, USA), a NASA Visiting Scientist Award, Alberta Centennial Medal, and the 2016 CRSS- SCT National Silver Medal for mid-career excellence in remote sensing. He has been selected for a Faculty Exchange Program in Japan where he will be teaching throughout the Fall 2017 semester. He is a Past-President of the Canadian Remote Sensing Society (CRSS-SCT); an Associate Editor of the Canadian Journal of Remote Sensing; and was General Conference Chair of the 30th Canadian Symposium on Remote Sensing (Lethbridge 2009). He is a proud member of the Canadian Remote Sensing Society / Société canadienne de télédétection, and is Co-Chair of the CRSS-SCT Lethbridge Chapter.
DATE: Friday, May 26th, 2017 TIME: 10:30 am (Refreshments 10:15 am) LOCATION: Room 105, Life Science Building, York University
Check back regularly to stay up-to-date on upcoming regional events.