The "taming errors" series - urban myths vs. reality in terrestrial scanning
- Daniel Wujanz
- V.I.P Member
- Posts: 227
- Joined: Fri Aug 24, 2018 11:26 am
- 5
- Full Name: Daniel Wujanz
- Company Details: technet GmbH
- Company Position Title: 3D Laser Scanning Specialist
- Country: Germany
- Linkedin Profile: Yes
- Location: Berlin
- Has thanked: 206 times
- Been thanked: 188 times
- Contact:
The "taming errors" series - urban myths vs. reality in terrestrial scanning
Dear colleagues,
I'm following discussions about laser scanning in different forums now for quite a while and am frequently shocked that various urban myths are well established in the scanning community. Hence, it is my motivation to clarify some of them. We've created a little series that will discuss the following subjects:
- Registration, error propagation and economical aspects of registration https://www.linkedin.com/pulse/taming-e ... el-wujanz/
- Network design and strategies for point cloud registration
- Quality assurance and dealing with errors
- Stochastic characteristics of terrestrial laser scanner or "how accurate is my scanner?"
- Deformation measurement
All the best
Daniel Wujanz
I'm following discussions about laser scanning in different forums now for quite a while and am frequently shocked that various urban myths are well established in the scanning community. Hence, it is my motivation to clarify some of them. We've created a little series that will discuss the following subjects:
- Registration, error propagation and economical aspects of registration https://www.linkedin.com/pulse/taming-e ... el-wujanz/
- Network design and strategies for point cloud registration
- Quality assurance and dealing with errors
- Stochastic characteristics of terrestrial laser scanner or "how accurate is my scanner?"
- Deformation measurement
All the best
Daniel Wujanz
- Scott.Warren
- V.I.P Member
- Posts: 364
- Joined: Tue Jan 30, 2018 3:14 pm
- 6
- Full Name: Scott Warren
- Company Details: WSP Canada
- Company Position Title: Project Manager - Geomatics Engineer
- Country: Canada
- Linkedin Profile: Yes
- Location: Dartmouth, Nova Scotia, Canada
- Has thanked: 43 times
- Been thanked: 111 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
- Referenced Helmert
- Great analogizes
- Transformations
- clear
- concise
9/10 - looking forward to the next article (10/10 requires more puns)
- Great analogizes
- Transformations
- clear
- concise
9/10 - looking forward to the next article (10/10 requires more puns)
- landmeterbeuckx
- V.I.P Member
- Posts: 1615
- Joined: Tue May 01, 2012 5:19 pm
- 11
- Full Name: Lieven Beuckx
- Company Details: Studiebureau Beuckx
- Company Position Title: Owner
- Country: Belgium
- Linkedin Profile: Yes
- Has thanked: 183 times
- Been thanked: 548 times
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
can you give some info on the other forum plz?Daniel Wujanz wrote: ↑Thu Jul 18, 2019 1:31 pm Dear colleagues,
I'm following discussions about laser scanning in different forums now for quite a while and am frequently shocked that various urban myths are well established in the scanning community. Hence, it is my motivation to clarify some of them. We've created a little series that will discuss the following subjects:
-
- Daniel Wujanz
- V.I.P Member
- Posts: 227
- Joined: Fri Aug 24, 2018 11:26 am
- 5
- Full Name: Daniel Wujanz
- Company Details: technet GmbH
- Company Position Title: 3D Laser Scanning Specialist
- Country: Germany
- Linkedin Profile: Yes
- Location: Berlin
- Has thanked: 206 times
- Been thanked: 188 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Dear Lieven,
sorry about the confusion. I meant forums in the classical sense that include conferences, seminars, and of course "digital" forums like LinkedIn and this very forum. Let's define forum as an analogue or digital space for professional discussion.
All the best
Daniel
sorry about the confusion. I meant forums in the classical sense that include conferences, seminars, and of course "digital" forums like LinkedIn and this very forum. Let's define forum as an analogue or digital space for professional discussion.
All the best
Daniel
- Daniel Wujanz
- V.I.P Member
- Posts: 227
- Joined: Fri Aug 24, 2018 11:26 am
- 5
- Full Name: Daniel Wujanz
- Company Details: technet GmbH
- Company Position Title: 3D Laser Scanning Specialist
- Country: Germany
- Linkedin Profile: Yes
- Location: Berlin
- Has thanked: 206 times
- Been thanked: 188 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Mental note: "...more puns"... got it!
Thanks heaps Scott
Thanks heaps Scott
-
- I have made 100> posts
- Posts: 108
- Joined: Thu Sep 21, 2017 9:43 pm
- 6
- Full Name: Iain Took
- Company Details: WMP
- Company Position Title: Dogsbody
- Country: United Kingdom
- Linkedin Profile: No
- Has thanked: 3 times
- Been thanked: 6 times
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Excellent thanks for sharing.
- Phill
- V.I.P Member
- Posts: 653
- Joined: Wed Feb 06, 2008 7:19 am
- 16
- Full Name: Phillip Nixon
- Company Details: SKM
- Company Position Title: Surveyor
- Country: Australia
- Location: Sydney
- Has thanked: 7 times
- Been thanked: 45 times
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Daniel
You forgotten one thing in your report. Cloud to cloud got rid of the propagation or error (and dislevellement, parallax and refraction). Didnt it....? DIDNT IT?
Phill
You forgotten one thing in your report. Cloud to cloud got rid of the propagation or error (and dislevellement, parallax and refraction). Didnt it....? DIDNT IT?
Phill
- Daniel Wujanz
- V.I.P Member
- Posts: 227
- Joined: Fri Aug 24, 2018 11:26 am
- 5
- Full Name: Daniel Wujanz
- Company Details: technet GmbH
- Company Position Title: 3D Laser Scanning Specialist
- Country: Germany
- Linkedin Profile: Yes
- Location: Berlin
- Has thanked: 206 times
- Been thanked: 188 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Dear Phill,
everything you say is true - note that I will refer to your wisdom once we will actually talk about the ICP-algorithm (aka cloud to cloud)
Cheers
Daniel
P.S. this post was written in Sarcastica - just as yours ; )
everything you say is true - note that I will refer to your wisdom once we will actually talk about the ICP-algorithm (aka cloud to cloud)
Cheers
Daniel
P.S. this post was written in Sarcastica - just as yours ; )
- smacl
- Global Moderator
- Posts: 1409
- Joined: Tue Jan 25, 2011 5:12 pm
- 13
- Full Name: Shane MacLaughlin
- Company Details: Atlas Computers Ltd
- Company Position Title: Managing Director
- Country: Ireland
- Linkedin Profile: Yes
- Location: Ireland
- Has thanked: 627 times
- Been thanked: 657 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Great article. My best advice to anyone planning to purchase any survey services to a given level of accuracy is to figure out how they're going to test that these accuracy requirements have been met in advance of commissioning the survey, and make passing those tests an acceptance criteria for getting paid for the work. The most reliable way of doing this in my experience is on-site checks using an independent method of measurement, ideally carried out by the client or a third party. In my experience, the theoretical best case accuracy for any given instrument is rarely if ever achieved and is subject to a wide range of both systematic and random interference factors that need to be controlled for. It is only when work is checked that the value of an experienced surveyor in terms of planning and execution becomes apparent and that there is more to quality than the brand of instrument being used.
-
- V.I.P Member
- Posts: 544
- Joined: Fri Feb 24, 2017 10:47 am
- 7
- Full Name: Martin Graner
- Company Details: PointCab GmbH
- Company Position Title: Research and Development
- Country: Germany
- Linkedin Profile: No
- Has thanked: 160 times
- Been thanked: 175 times
- Contact:
Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning
Daniel,Daniel Wujanz wrote: ↑Thu Jul 18, 2019 1:31 pm Dear colleagues,
I'm following discussions about laser scanning in different forums now for quite a while and am frequently shocked that various urban myths are well established in the scanning community. Hence, it is my motivation to clarify some of them. We've created a little series that will discuss the following subjects:
All the best
Daniel Wujanz
You are speaking my mind.
Thank you very much for this great article. We had some good laughs especially for your comparison to brain surgery.
CheersDaniel Wujanz wrote: For more than a decade, marketing strategists of some laser scanner manufacturers did a great job in telling you that everyone can collect and process scans in order to create a bigger market. Well, in theory I could perform brain surgery equipped with a carpet knife, an electric saw, a needle and some string.
Martin