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Helmdar: 3D Scanning Brooklyn on Rollerblades
- fshafique 2y agoYou should post this on /r/Photogrammetry on Reddit: https://www.reddit.com/r/photogrammetry/ https://www.reddit.com/r/photogrammetry/
- condensedcrab 2y agoVery impressive! LiDAR and point clouds seem very promising, but the challenge of denoising point clouds and artifacts keep the skill bar very high/time intensive.
- timzaman 2y agoJust install polycam and walk around :)
- amelius 2y agoWouldn't this be cheaper with a stereo pair of cameras + software reconstruction instead?
- fake-name 2y agoThat would need WAY more compute.
- SequoiaHope 2y agoActually a single camera is all you need. I think it’s fair to say that the only thing stereo gets you is scale. But both cameras and lidar have their place in sensing systems, and getting more experience with either is useful. If you’re interested in reconstruction from images check out Meshroom and Nerf Studio https://alicevision.org/ https://alicevision.org/ https://docs.nerf.studio/ https://docs.nerf.studio/
- taneq 2y agoScale is the one thing stereo doesn't get you compared with sequential mono images, unless you have some fancy lens model that lets you derive scale from nonlinearities in the lens. Is that something we do now? I always wanted to try out monocular SLAM with a fisheye lens.
- Jyaif 2y agoWith 2 mono images you can figure out that an object is twice as big as an other, but you can't tell the size of any objects (= you don't know the scale). With a stereo image you know the distance between the lenses, which allows you to know the size of the objects (= you know the scale).
- deleted 2y ago[deleted]
- pj_mukh 2y agoSo cool! I wonder how the Lidar and ARCore poses were cross-calibrated? Just to avoid this, I would just use a LiDAR equipped iPhone Pro, with industrial grade cross-calibration and still have all the visualization fun.
- dllu 2y agoI once put an Ouster OS1 on a hat and walked around with it. Pic of me here: [1] [1] https://x.com/ddetone/status/1141785696224477184?s=46 https://x.com/ddetone/status/1141785696224477184?s=46
- weinzierl 2y agoVery cool. When was this? If you would repeat it, which LIDAR would you use? Is there anything on a generous hobby budget nowadays?
- mkarklins 2y agoOn cheaper side there's MID360
- dllu 2y agoIt was at CVPR 2019, a computer vision conference. I may be biased since I used to work at Ouster, but cost notwithstanding, I would definitely pick the OS1 again for its unparalleled number of points per second combined with low weight and decent accuracy.
- plun9 2y agodllu is a serial astroturfer! He commented “Looks like Ouster just announced their security system” on Reddit.
- maeln 2y agoA slight tangent but rollerblades is a case of proprietary eponym : Rollerblade is a brand of inline skates (often call skates - plural - for short) that became so famous people started to use it to describe all inline skates, no matter the brand. Just like vaccum cleaner and hoover :)
- techn00 2y agoand xerox
- ghaff 2y agoAs another tangent, it's a great example of an activity that became very popular for a time and then almost completely faded away for no obvious reason. (If anything, paved rail trails--which are often a great place to inline skate--are much more common today than they were during skating's heyday.)
- BLKNSLVR 2y agoI should attempt to trademark myself as The Rollerbalder. (I haven't checked but I'm sure someone else has already used this on all the popular socials)
- voidUpdate 2y agoI've thought about trying to do 3d scanning with a LIDAR module, but they all seem really expensive. Does anyone have a recommendation for a spinning LIDAR module that can be interfaced with by an arduino-style device, rather than USB, that doesn't cost me an arm and a kidney?
- coder543 2y agoI've never actually tried them, but if you google "RPLIDAR", there seem to be some budget-friendly options out there.
- mlsu 2y agoslamtec RPlidar points come in on UART. They are 2D, not 3D. You won't be able to do much with the raw data on something with the compute power of an arduino. SLAM takes a lot of compute and memory and compute scales with resolution quickly.
- iugtmkbdfil834 2y agoWhile it does feel like we are slowly approaching weird mix of "Snowcrash" and "Fringe", I can't help but marvel at how eerily beautiful those scans are. And the worst part is now I wanna try something similar. Is this what normal people call social proof?