At the 111th Annual General Meeting of the Association of British Columbia Land Surveyors (ABCLS) current Underhill President, Chris Cryderman, was elected to the Board of Management(BOM) for a two year term.
ABCLS BOM 2016. Chris Cryderman (upper right) doing his best “Where’s Waldo” .
The Partners of Underhill & Underhill and the staff of Underhill Geomatics Ltd. congratulate Chris Cryderman, P.Eng., CLS, BCLS on his being selected to the Board of Management. Congratulations Chris!
FORT ST. JOHN – Underhill Geomatics Ltd. is pleased to announce it has been awarded a contract from BC Hydro for survey services for the Site C Clean Energy Project. The contract services include completing survey quality auditing, surveying and drafting services as required in the role of the owner’s surveyor to support site preparation and other construction activities. The initial contract is for a period of 5 months, with an option to extend.
Underhill Geomatics Ltd. is a 102 year old British Columbia and Yukon company with offices in Vancouver, Whitehorse, Kamloops and Merritt. Underhill is a full service professional land survey and geomatics engineering company with a long history of performing surveys and mapping projects for BC Hydro.
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Since the early 1950’s Underhill has completed over 1,000 projects for BC Hydro and its predecessors in the fields of surveying and mapping.
With all the media attention devoted to UAV’s, it is easy to overlook that there are serious groups of researchers and developers from academia, government, and industry quietly working in the background striving to improve and expand the technology. The third international conference on Unmanned Aerial Vehicles in Geomatics (UAV-g 2015) was hosted by the Lassonde School of Engineering at York University from August 30th to September 2nd in Toronto. It brought together many of these experts from around the world.
The theme for the conference was “Small Unmanned Aerial Systems (sUAS): a disruptive technology for geomatics”. The disruptive nature of these technologies, again, has been covered quite extensively in the media. With regards to geomatics (surveying and mapping), UAV’s represent something of a revolution. They are new tools that have the potential to change entire industries and ways of doing things, in ways that we are only now starting to comprehend.
Underhill’s participation in the conference focused on the conference theme. A paper presented by Bill Mah, of Underhill’s, explains the development of a low cost UAV, from easily available and affordable parts, for the purpose of accurate aerial mapping. In decades past, the idea of building your own survey tools capable of autonomously measuring and mapping to centimetres was unheard of. The Internet, Maker Movement, Smart Phones, and other enabling technologies have contributed to making this disruption possible. It will be interesting to see what the future will bring to this field when the next UAV-g is held in Bonn, Germany in 2017.
With the support of the Department of Aboriginal Affairs and Northern Development the Tk’emlups te Secwepemc (formerly the Kamloops Indian Band), a member of the Shuswap Nation, celebrates the ground breaking for four new family homes. The Department’s support included seed money so that the four Band families could apply for real mortgages with a bank in order to pay for the houses. This is quite the accomplishment given the complexities of the Indian Act. Congratulations to the families, and the Band! Underhill & Underhill, BC Land Surveyors, provided all the topographic, legal and house layout services for the project. Up to six more houses will be built later in the year in another part of the Reserve but within the same project.
Joel Nicholas Peterson provided an update on his recent photography showing at the Atrium at Woodward’s. Below is an excellent short documentary, by Nigel Berringer of Parallelogram Pictures, outlining Joel’s artistic process and his impetus for undertaking the project. Additionally, there are links below to a number of news stories about it all (CBC, Petapixel, and VANCITY bUZZ). Our original news story regarding the measurement of his potential World Record camera obscura film negative, that formed part of the exhibit, follows these updates.
It is something to reflect on, in this era of “selfie sticks” and “photobombing”, where everyone with a cellphone also has a camera, that it has been less than 200 years since photographic images were first “captured” from reflected light. In fact, it was in 1816 that French inventor Nicéphore Niépce combined the camera obscura (pinhole camera), which had been known for millennia, with a photo sensitive paper. With it, he produced an impermanent image that disappeared quickly when brought out into the sunlight. Ten years later, in 1826, Niépce managed to make his images permanent. For a century and a half, the production of these images would be precious and expensive. It is only in the last few decades of the digital revolution that photographic images have become the commonplace disposable items they are now.
Currently showing at The Atrium at the old Woodward’s site (333 Abbott Street, in Vancouver), are images which harken back to the time of Niépce. Captured with a huge camera obscura, using a building itself as the body of the camera and an 1/8 inch hole in a wall as the pinhole, the resulting film negatives are massive. One in particular may be the largest (in surface area) single exposure film image ever made.
Joel Nicholas Peterson is the photographer. He contacted the BC Land Surveyors at Underhill to measure this negative for a submission to the Guinness Book of World Records. Measuring approximately 4 feet by 13 feet, the negative shows a view of Granville Island between buildings at Howe St. and Beach Ave. in the west end. Said Jonathan Dyke of Underhill’s, “That’s the biggest negative I’ve ever seen!”
Joel Nicholas with the largest of his camera obscura negatives.
Chris Cryderman and Jonathan Dyke measuring the negative.
Hard to visualize a negative…
…better when it is a positive.
According to Joel, the exposure of the film image took 36 minutes. The exposure time was arrived at by trial and error. Quite a feat when you consider the focal length was 9 feet, a number more like a telescope than a camera. Given the numbers, Chris Cryderman of Underhill’s commented, “A shutter speed of 36 minutes and an aperture of f/864… These are not numbers I associate with photography. This is extreme photography.” Clearly, not something you could ever hope to capture at the end of a selfie stick!
The negatives and photos are scheduled to be on display for two weeks.
In a paper in the December 2014 on-line issue of GEOMATICA, Chris Cryderman, Bill Mah, and Aaron Shufletoski evaluate the accuracy of UAV aerial drone mapping and compare it to a more traditional surveying approach.
Hand launching the UAV
Pilot Controlled flight
Autopilot controlled flight
The crew (Aaron, Chris, Bill) and the Underdrone
15 million point 3D model of spoil pile from 266 photos. 25mm pixel.
45 million point 3D Model of rock quarry from 985 photos. 25mm pixel.
Coming Soon – Aerial RTK GPS of photocentres.
In this special issue of the magazine, guest editors Costas Armenakis and Babak Ameri have brought together seven peer reviewed papers, and one professional paper, focused on Small Unmanned Vehicle Systems (sUVS) in Geomatics. In their introduction they highlight the rapid growth of the sUVS field with the 2014 market estimated at CAD$1.5 billion. They state:
“This disruptive technology of sUVS is creating new and innovative opportunities for the geomatics industry and has “democratized” photogrammetry.”
This theme of “disruptive technology” is echoed in the comments of the Journal’s editor Izaak de Rijcke,
“…”drones”, UVS have gained notoriety in the public mind as a tool for compromising privacy and as a device that may deserve better controls by a Regulator. This of course is unfortunate. UVS that are operated for a specific purpose by a qualified and licensed individual hold tremendous opportunity for the economic means of qualitative geospatial acquisition on a small scale. In effect, drones do not compromise privacy; it is unethical operators who deserve sanction.”
GEOMATICA is the official quarterly publication of the Canadian Institute of Geomatics (CIG). It is the oldest surveying and mapping publication in Canada and was first published in 1922 as the Journal of the Dominion Land Surveyors’ Association.
After some 30 years of service to the Community of Merritt and the Nicola Valley region of BC, Land Surveyor John Graham, CLS, BCLS, has decided to retire. Graham and Associates, BC and Canada Land Surveyors, will become Underhill & Underhill. Ivan Royan, CLS, BCLS, QLS senior partner of Underhill will continue providing Land Surveying services to the Community, and the Region. Of John, Ivan was quoted in the Merritt Herald as saying, “He was a dedicated, professional Land Surveyor”.
John Graham, CLS, BCLS (from Merritt Herald, August 7th, 2014)