The "taming errors" series - urban myths vs. reality in terrestrial scanning

Please post any further education or courses that are for laser scanning
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Daniel Wujanz
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The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Daniel Wujanz »

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

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Scott.Warren
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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Scott.Warren »

- Referenced Helmert
- Great analogizes
- Transformations
- clear
- concise

9/10 - looking forward to the next article (10/10 requires more puns)

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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by landmeterbeuckx »

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:

-
can you give some info on the other forum plz?
LSBbvba
Surveying services - 3D Laserscanning
Tel : +32477753126
www.lsbbvba.be
[email protected]

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Daniel Wujanz
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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Daniel Wujanz »

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

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Daniel Wujanz
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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Daniel Wujanz »

Mental note: "...more puns"... got it!

Thanks heaps Scott

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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Tookie »

Excellent thanks for sharing.

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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Phill »

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

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Daniel Wujanz
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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by Daniel Wujanz »

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 ; )

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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by smacl »

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.

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Re: The "taming errors" series - urban myths vs. reality in terrestrial scanning

Post by VXGrid »

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
Daniel,
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.
Daniel 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.
Cheers
Martin

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