[HN Gopher] Generating aerial imagery with your iPhone's Lidar s...
       ___________________________________________________________________
        
       Generating aerial imagery with your iPhone's Lidar sensor
        
       Author : jakecopp
       Score  : 49 points
       Date   : 2023-03-13 21:03 UTC (1 hours ago)
        
 (HTM) web link (jakecoppinger.com)
 (TXT) w3m dump (jakecoppinger.com)
        
       | lucb1e wrote:
       | Note this is not aerial imagery shot from an aircraft with an
       | Apple phone, this is someone with an Apple phone on their head
       | cycling around the neighborhood and then viewing the 3d model
       | from above.
       | 
       | No less cool, but I was rather confused for a lot of the article,
       | wondering what in the world the range on this sensor is (usually
       | you get a few meters on normal-priced sensors, not hundreds of
       | meters, and the picture showed entire streets being captured).
       | The article actually mentions the maximum range is 5 metres after
       | you set it to low confidence.
        
       | willio58 wrote:
       | Ever since iPhone introduced Lidar, I've wondered why Teslas got
       | rid of it. They said it was due to additional cost and complexity
       | in models. Of course Waymo heavily uses Lidar but they have huge
       | sensors they mount on cars to do so. Why is that lidar so
       | different? What's stopping Tesla from adding the same sensors the
       | iphone has, but all over the car and stitching it together like
       | it does video from cameras? Is it just to do with distance?
       | Refresh rate? Would love someone who knows this to teach me!
        
       | jakecopp wrote:
       | I wrote this guide on creating orthorectified imagery using just
       | an iPhone, using a demo on George St, Sydney!
       | 
       | Usually this is easier with drones, but there are a lot of places
       | you can't fly drones. I hope this guide comes in helpful,
       | especially if you're contributing to OpenStreetMap.
       | 
       | I've found you can strap an iPhone to the front of a bicycle and
       | if you go slowly the 3D models/LiDAR point clouds are quite good
       | (it has a 5m range). There are drift issues if you try to
       | complete loops though.
        
       ___________________________________________________________________
       (page generated 2023-03-13 23:00 UTC)