[Vancouver GIS UG] Vancouver GIS Users Group: Talk Tomorrow Evening

Hello everyone,

Our next meeting is tomorrow evening.  Gerry Mitchell, president of
PhotoSat will be speaking about their new stereo satellite elevation
mapping system.

As usual we will meet in the Dunsmuir Auditorium in the BC Hydro office
tower, 333 Dunsmuir.   The meeting will start at 5:30.  Remember, everyone
is required to sign in after 5:00 at the security desk in the main lobby.
For more information about the Vancouver GIS User Group, please visit our
website: http://www.vancouvergis.org.

The full line up for this Fall is listed below.  Please note that in
November and December we will be meeting on the first Wednesday of the
month.  In November we are moving up a week to because BC Hydro needs the
Dunsmuir Room during the second week.  In December we are moving up to
first week before everyone gets caught up in the Christmas season.

We have a great selection of speakers and topics.  As to the balance of our
season, we are still looking for speakers for March and April.  We welcome
suggestions either through the web site to me or, to any of our other
steering committee members at meetings.


Doug Hrynyk


November 02, 2011

Topic: PhotoSat’s New, Highly Accurate, Stereo Satellite Elevation Mapping

Speaker: Gerry Mitchell, P. Geo, President, PhotoSat

PhotoSat has achieved a significant technical advance in the processing of
elevation maps from high resolution stereo satellite photos by applying
geophysical seismic processing methods, algorithms and software to produce
highly accurate elevation maps from the stereo satellite photos. This
"Geophysical" processing system is producing elevation maps with 2 to 3
times the elevation accuracy and 5 to 10 times the horizontal resolution
when compared to conventional stereo photo elevation mapping of the same
stereo satellite photos.

Using tens of thousands of ground survey points and by direct comparison
with highly accurate LiDAR surveys we have measured our elevation mapping
accuracy from 50cm resolution WorldView and GeoEye stereo satellite photos
to be much better than 50cm in elevation. We will present results of stereo
satellite elevation accuracy studies of six different high resolution
satellite stereo pairs over a test area in Eritrea, two IKONOS pairs, two
GeoEye-1 pairs, a WorldView-1 pair and a WorldView-2 pair. We will show
direct comparisons of elevations mapping from stereo WorldView-2 and stereo
GeoEye-1 with LiDAR surveys in California. We will discuss large stereo
satellite elevation mapping projects in Libya, Iraq and Argentina as well
as examples from a variety of smaller projects

Bio: PhotoSat is lead by the company founder, Gerry Mitchell. Gerry is a
Registered Professional Geophysicist of the Province of Alberta and a
registered Professional Geoscientist of the Province of British Columbia.
Gerry has worked at the senior technical level in both mining and
hydrocarbon exploration. He was BP Canada's Senior Mining Geophysicist for
Canada in the early 1980's, and BP's Senior Seismic Specialist for West
Canada Basin Oil and Gas Exploration in the late 1980's. In the early 90's
Gerry worked as a Remote Sensing Specialist for Frontier and International
Oil and Gas Exploration in BP's head offices in London, England. Gerry
moved to Vancouver and founded PhotoSat in 1993.


December 07, 2011

Topic: FortisBC Asset Realignment Project - Software Enabled Conflation of
Gas Facilities Data

Speaker: Piet Nooij, GIS Project Manager, FortisBC

FortisBC, a gas distribution company in British Columbia with 1 million
customers, is in the process of conflating or adjusting its gas facilities
data to new and more accurate land base. FortisBC is utilizing adjust.IT
conflation software and consultancy services to move more than 33 million
points to its new geographic location. Adjustments can vary from 1 m (3 FT)
to more than 50 m (170 FT) and in one occasion 700 m (2300 FT). This
presentation will discuss the project, software, business benefits and
lessons learned.

In the presentation you will learn;

How FortisBC utilized an automated tool to conflate large geographical
How we conflated massive volumes of data while the GIS was in use and
without breaking network connectivity
The business benefits delivered by conflating our network assets, i.e.,
absolute accurate spatial data.
How we managed a project of this scope and scale.
The difference between rubber sheeting and constraint based adjustment.

Bio: Piet Nooij has a bachelor degree in surveying and GIS. Piet has more
than 25 years’ experience in GIS and has worked for several
engineering/mapping companies and the last 13 years at FortisBC (formerly
Terasen Gas). Piet’s responsibilities include developing business cases,
data analysis and managing GIS projects.


January 18, 2012

Topic: TBA

Speaker: TBA


February 08, 2012

Topic: The application of remote sensing data to support climate change
adaptation decision-making

Speaker: Taylor Davis, LiDAR Applications Specialist, Terra Remote Sensing

Climate change is a ‘hot’ topic these days. It tends to invoke strong and
often diverging views on whether climate change is going to happen (to what
extent and when), is happening, should be mitigated, should be ignored, or
has to be adapted to. The essential question that should be answered is:
how can we strategically place investments in our communities that mitigate
future risks, increase community resiliency and address the uncertainties
of climate change at the same time? Answering this question requires
mapping out adaptation strategies that have benefits to our communities -
irrespective of future climates. Justifying the investment decisions of
today against the potential risks of tomorrow is a complex undertaking.

These investment decisions have to be based on the best information
possible, and can to a degree be supported by up-to-date geospatial
information. Cutting-edge remote sensing techniques including LiDAR, and
Hyperspectral imagery yield multiple data sets capable of providing
decision makers with comprehensive information regarding the health,
species and physical characteristics of vegetation, abundance and type of
impervious surfaces, floodplain characteristics, and assessments of our
as-built infrastructure.

My talk will generally focus on the application of remote sensing data to
support climate change adaptation decision-making. As the Insurance Bureau
of Canada recently identified urban flooding as the highest natural
disaster insurance cost in Canada, there will be a specific focus on
rainwater management.

Bio: Taylor Davis, BA, MA, Environment and Management, LiDAR Applications
Specialist, Terra Remote Sensing Inc.

Taylor has been working with Terra Remote Sensing Inc. since 2001, and has
been involved with multiple aspects of the company during this time.
Initially, Taylor specialized in LiDAR data production and data management.
Following the completion of his Master’s degree in Environment and
Management, he has transitioned into a business development and research
role where he has published research into journals such as the IEEE,
specifically on the application of high resolution remote sensing to
climate change adaptation. Taylor has spent considerable time working on
international projects, namely Chile, Colombia and China. Taylor spent over
two months in China helping to oversee comprehensive training and the
completion of two transmission line mapping projects for the State Grid
Corporation of China. Taylor has been invited to present his research to
various groups around the province, including the Fraser Basin Joint Flood
Committee, the BC Ministry of Environment, the Capital Regional District
and the Cowichan Valley Regional District.
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