FARO S Series Accuracy Video

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3DForensics
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FARO S Series Accuracy Video

Post by 3DForensics »

Hello All,

I've made an attempt to discuss the laser scanner accuracy on my YouTube channel and although it didn't turn out as comprehensive as I had wanted, it still may provide some insight into things you need to consider when discussing laser scanner accuracy. In my case, I am focusing on the FARO S350, but I think most laser scanners have similar discussion points.

Much of what I have learned is because of the people here on the forum so thanks!

Eugene


youtu.be/dGrej4k58Ok
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Daniel Wujanz
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Re: FARO S Series Accuracy Video

Post by Daniel Wujanz »

Dear Eugene,

thanks heaps for your latest video - great work!

I'd just like to add a little comment that may be of help for some end users:

All accuracy / noise metrics that you've mentioned refer to 122,000 points/sec..
--> If you measure with another sampling rate, e.g. 244,000 points, the noise range can be expected to be 1.4 times higher (square root of 2). If you're going full blast, you can expect an increase of ~2.8 (976,000 / 122,000 = 8) in contrast to the referred rate.

If you're interested in digging deeper, here are some academic articles on the subject of error modelling. As you've also mentioned, there are a lot more influencing factors onto the quality than just range and radiometric properties.

An intensity-based stochastic model for terrestrial laser scanners url]https://www.sciencedirect.com/science/a ... 161630288X[/url]

Determination of Intensity-Based Stochastic Models for Terrestrial Laser Scanners Utilising 3D-Point Clouds https://depositonce.tu-berlin.de/bitstr ... -02187.pdf

Strategy for Determining the Stochastic Distance Characteristics of the 2D Laser Scanner Z + F Profiler 9012A with Special Focus on the Close Range https://www.mdpi.com/1424-8220/18/7/2253

Since I've never modelled a Faro scanner I'd be keen to model yours or a comparable one. If you're interested, please let me know.

All the best

Daniel Wujanz

P.S. I will publish an article called "Not quite capturing reality..." in February, which discusses the "meaningfulness" of spec sheets in laser scanning and how they are influencing an entire industry
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3DForensics
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Re: FARO S Series Accuracy Video

Post by 3DForensics »

Hi Daniel,

Great information and much appreciated. I think I pointed out in the video that the spec sheet does specify the scanning speed, but this is part of the problem...so many variables to consider!

I will review these documents and best of luck on your study!

Eugene
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