👏Spectacular video! And as a 30 year old creative agency, we've helped build many courses, and Rami's Survey School is top tier quality. For a new course, I was pleasantly surprised at the size and quality of the community. You immediately feel supported while while your brain is expanding with all the knowledge, and that's priceless when learning complex topics. If you are looking to get into surveying, digital twinning, or just brushing up your skill-set, you're in extraordinary hands at The Survey School and I hope to see you there.
I'd recommed giving them both a try! Dot3D specializes in point clouds, accuracy, larger-scale scanning, and surveying workflows (i.e. the survey control procedure shown in this video).
The integrated control for the LiDAR is a step in the right direction for sure! I’d like to see what the minimum amount of gcp’s would be. Also, maybe a mix of shooting a couple targets conventionally and letting the software optimize in between to see the accuracy. I do a lot stockpile inventory. The material is both indoors and outdoors. I use drones outside and robotic scanners indoors, accurate but slow. What device/ app would you suggest using for a lower budget solution? Thanks for sharing!
Minimum # of gcps for Dot3D is 3, but more important is that they are spread across the full scope of the scan area. This example could have probably still been successful with a lot less targets, but you would ideally still want to have them spread throughout all the furthest corners of the scan area. While you can simply survey 3 local targets (say at the start and finish point outside the condo) and use those as control to successfully geo-reference your data, they wouldn't necessarily help with accuracy inside the condo in that case. However, Dot3D's optimization is still remarkably accurate even without control, so for some use-cases this may do the trick too. As to something like a stockpile, 4 targets around the circumference would have you covered very well. Dot3D is the app used here, specializing in large, accurate point clouds. It's currently only $300/yr or $50/mo for unlimited use. www.dotproduct3d.com/appstore
Hello, very good. I didn't understand the part where the estimated error is 0.01 feet with the use of control points (or check points?). Either way, I think it's too low to come from the LiDAR camera of an iPhone and for such a complex project
It really is that accurate in direct comparison to the control! However, it's important to note that it's also that accurate because of the control. Dot3D's optimization automatically leverages all known control target coordinates as direct constraints during optimization, ensuring a tight fit and more accurate data throughout the entire scan. Essentially, Dot3D's optimization uses all tools at its disposal to produce the most accurate results possible, and in this case that included an extensive, accurate survey control file. While the results may have still been close to this accurate with less targets or even just reference distances, some level of control is required to achieve this level of accuracy at this scale.
@@chris3d so, I think what is being implied is that the accuracy obtained is thanks to the adjustment applied to the extremely high and precise network of control points. I think it would be good to know what the final accuracy would be without control points, as that is the most likely scenario. Without the proper clarifications, it gives the impression that it is a high-performance LiDAR SLAM, and I doubt that an iPhone is at that level... Beyond the extremely high added value that this great software can provide.
Question, boss: Could you make a video about comparing different iPhone LIDAR scanner apps? Don't have to make it 100 hour long, just what you recommend, WHAT WORKS AT ALL. Because I bought a few and they are SUCH GARBAGE. I spend hours scanning and they can't even process the finished scan, they just crash. Like I can't even recall one app that worked flawless. (I didn't try the one in this video but now I sure will.) And as always, great videos, great content. Love the channel!
Hi, I'm from Uruguay and from what I see, surveyors are not engineers, since here it takes 5 years of study and I thought it was the same in all countries.
