Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
http://www.mdpi.com/2072-4292/9/8/796/htm
Products tested: TLS, Vilma, Würzburg backpack, NavVis, Matterport, Slammer, Zebedee, Pegasus, Stencil
Abstract: Accurate three-dimensional (3D) data from indoor spaces are of high importance for various applications in construction, indoor navigation and real estate management. Mobile scanning techniques are offering an efficient way to produce point clouds, but with a lower accuracy than the traditional terrestrial laser scanning (TLS). In this paper, we first tackle the problem of how the quality of a point cloud should be rigorously evaluated. Previous evaluations typically operate on some point cloud subset, using a manually-given length scale, which would perhaps describe the ranging precision or the properties of the environment.
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"All methods in this study were treated equally as black box systems, as commercial methods typically are like that. The results from three distinct test sites reveal strengths and weaknesses for the tested methods and are summarized in Table 5. Here, the word experimental denotes a platform built for scientific work."
Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
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Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
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Re: Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
The GeoSLAM (Zebedee) did a great job in this study - and as noted in the study, they used a commercially wound-down Zeb 1 model (value at report writing maybe $15K USD). For them not to note pricing of the technology is a shame - because the Pegasus results really didn't outshine GeoSLAM mobile work at $300K-$400KUSD more! That's a lot of cake difference.
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Re: Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
The final results in the article show horrible results for the VILMA and some spikes for Matterport. The article states that this is due to operator-originated effects - which seems to indicate that proper use of the devices would have drastically changed results.
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Re: Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
Thanks for sharing this, that's a really good paper.
I think the new Leica RTC360 is so fast that it almost qualifies as mobile mapping and will produce much nicer results for internal building surveys. It's certainly going to be my weapon of choice when it comes out.
This is my experience with GeoSLAM, it's very "black box" and we had to re-run the registration a number of times to get acceptable results.Additionally, a 4 m-long end of one corridor is missing due to, apparently, a SLAM registration issue. In other words, the resulting Würzburg backpack point cloud in Figure 21 is affected so that the end part of the hallway is warped several meters and looks shorter than it should.
I think the new Leica RTC360 is so fast that it almost qualifies as mobile mapping and will produce much nicer results for internal building surveys. It's certainly going to be my weapon of choice when it comes out.
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Re: Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
Yeah, and if your wheeling it on a dolly through a structure on each floor.....Jamesrye wrote: ↑Wed Jun 20, 2018 11:33 am Thanks for sharing this, that's a really good paper.
This is my experience with GeoSLAM, it's very "black box" and we had to re-run the registration a number of times to get acceptable results.Additionally, a 4 m-long end of one corridor is missing due to, apparently, a SLAM registration issue. In other words, the resulting Würzburg backpack point cloud in Figure 21 is affected so that the end part of the hallway is warped several meters and looks shorter than it should.
I think the new Leica RTC360 is so fast that it almost qualifies as mobile mapping and will produce much nicer results for internal building surveys. It's certainly going to be my weapon of choice when it comes out.
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Re: Comparison of the Selected State-Of-The-Art 3D Indoor Scanning and Point Cloud Generation Methods
Most of those trolley based systems look completely impractical for undertaking a Building Survey.
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