3 ms·

I am a big fan of HSLuv and I use it for generating colourschemes for lidar point clouds: https://daniel.lawrence.lu/public/colortransform/#0_2584_964_49_6_2624

by dllu 7y ago

I am a big fan of HSLuv and I use it for generating colourschemes for lidar point clouds: https://daniel.lawrence.lu/public/colortransform/#0_2584_964_49_6_2624_722_363_10_3248_906_559_15_415_961_731 https://daniel.lawrence.lu/public/colortransform/#0_2584_964... which is used for videos such as this: https://www.youtube.com/watch?v=eNt8D1mfwwo https://www.youtube.com/watch?v=eNt8D1mfwwo

somishere 7y ago
Your link broke my back button :/
- dllu 7y ago
  Sorry about that. Fixed the link now.
nja 7y ago
The amount of detail in that video is amazing. I noticed it can partially see through chain link gates -- neat!
wpietri 7y ago
That's very cool! Could you explain a bit about what the colors mean? I'm especially intrigued by the painted road markings, which are clearly visible.
- dllu 7y ago
  The colours are based on lidar intensity, i.e. how much light is bounced back from a surface. This depends on the reflectivity. That's why it can see lane markings and even murals on the wall: https://www.youtube.com/watch?v=a0-JaMGivX4 https://www.youtube.com/watch?v=a0-JaMGivX4
  - wpietri 7y ago
    Ah, thanks. So the colors are an aesthetic choice? There's no more information than one might get from greyscale? (Which is a fine thing; I love the colors.)
pottertheotter 7y ago
That's really cool! I've always wanted to map my yard and house like that, but I imagine it would be quite expensive. I'm on a hill and it would make it so easy to play around with landscaping ideas without having to measure a ton. Also, it's crazy how easy it is to recognize homes from SF!
- rebuilder 7y ago
  Photogrammetry should be accurate enough for that purpose. Just make sure to include some reference object for scale. A drone would probably be the best way to shoot the photos for this.
- dharma1 7y ago
  if you have a drone or have a friend with one, it's pretty easy to do this with aerial photogrammetry. Something like dronedeploy.com makes this very easy with a DJI drone. Draw the area you want to capture as a polygon on google maps in DroneDeploy, deploy the drone, off it goes, takes the photos and lands without you needing to do anything. Then just upload the photos, and you get a 3d model processed on their servers an hour or so later.

by dllu 7y ago

somishere 7y ago

Your link broke my back button :/

dllu 7y ago
Sorry about that. Fixed the link now.

nja 7y ago

The amount of detail in that video is amazing. I noticed it can partially see through chain link gates -- neat!

wpietri 7y ago

That's very cool! Could you explain a bit about what the colors mean? I'm especially intrigued by the painted road markings, which are clearly visible.

dllu 7y ago
The colours are based on lidar intensity, i.e. how much light is bounced back from a surface. This depends on the reflectivity. That's why it can see lane markings and even murals on the wall: https://www.youtube.com/watch?v=a0-JaMGivX4 https://www.youtube.com/watch?v=a0-JaMGivX4
- wpietri 7y ago
  Ah, thanks. So the colors are an aesthetic choice? There's no more information than one might get from greyscale? (Which is a fine thing; I love the colors.)

pottertheotter 7y ago

That's really cool! I've always wanted to map my yard and house like that, but I imagine it would be quite expensive. I'm on a hill and it would make it so easy to play around with landscaping ideas without having to measure a ton. Also, it's crazy how easy it is to recognize homes from SF!

rebuilder 7y ago
Photogrammetry should be accurate enough for that purpose. Just make sure to include some reference object for scale. A drone would probably be the best way to shoot the photos for this.
dharma1 7y ago
if you have a drone or have a friend with one, it's pretty easy to do this with aerial photogrammetry. Something like dronedeploy.com makes this very easy with a DJI drone. Draw the area you want to capture as a polygon on google maps in DroneDeploy, deploy the drone, off it goes, takes the photos and lands without you needing to do anything. Then just upload the photos, and you get a 3d model processed on their servers an hour or so later.