[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)