External autofocus
Open, Needs TriagePublic


This issue is to research options for external autofocus that can be added to any camera and (manual) lens.

There are different technologies to measure the distance to an object:

Main article: https://en.wikipedia.org/wiki/Range_imaging

The most accurate technology seems LIDAR, that's why it's used in self-driving cars.

There are some commercial lidar systems.

Far Mode: 4m
Near Mode: 2m

Far mode:±2cm,
Near mode: ±4cm

Lens FOV:
70° Diagonal (equivalent to a 30mm lens on full frame sensor)

Depth operating mode/range:
Near mode: 0.2m to 1.2m
Far mode: 1m to 6m

Depth accuracy: Upto 1% (e.g. at 50cm you will get +or- 5mm error)

FOV:84.29° (H) x 64.14° (V) x 99.75°(D) (with the lens provided by e-con)

Has RGB Camera as well with FHD - 1920 x 1080 @30fps

Linux software support

It would be awesome if we could build an open hardware solid-state LIDAR. Maybe there are some research papers we could implement. We could collaborate with open hardware self-driving car projects. Maybe some university is interested in such a project.

One practical use of such a system for video would be conference recording. Today a camera person has to follow the speaker and keep focus. With a system to move the camera like a gimbal or robot arm and LIDAR focus it can be fully automated!

davidak created this task.Mar 11 2022, 11:55 PM
davidak updated the task description. (Show Details)Mar 12 2022, 1:14 AM
davidak updated the task description. (Show Details)Sep 15 2022, 10:06 PM
davidak updated the task description. (Show Details)Sep 15 2022, 10:24 PM
davidak updated the task description. (Show Details)Sep 16 2022, 9:51 AM