Magic Lantern Forum

Developing Magic Lantern => Feature Requests => Topic started by: feureau on September 06, 2014, 01:36:21 AM

Title: Save accelerometer data to file for post-stabilization.
Post by: feureau on September 06, 2014, 01:36:21 AM
Like this: http://petapixel.com/2014/09/05/steadxp-hopes-add-accelerometer-dslrs-gopros-better-image-stabilization/#more-144279
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: eyeland on September 06, 2014, 04:05:59 PM
Nice concept
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: a1ex on September 06, 2014, 04:10:08 PM
Already done (with MLV). Just enable the electronic level and the data will be logged.
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: dannyqt18 on September 13, 2014, 02:22:57 PM
how would one use the information for stabilization ?
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: dmilligan on September 13, 2014, 03:41:08 PM
Write a program that uses this data to stabilize the video, or write a program that translates this data to some format understood by some program that can already do this.
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: stoopkid on September 25, 2014, 11:05:25 PM
The problem is that camera shake is 99% rotation, not movement. Accelerometer data wont do much good to fix that. You would want a gyroscope, which is likely what that guy's device is using. An accelerometer is fine for detecting general orientation, but not really something that will be accurate enough to correct camera shake. Even if you went through the huge amount of trouble to translate that information it's not going to be nearly as useful as stabilizing video visually.
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: saeed2vfx on December 27, 2016, 08:46:57 PM
Like this: http://petapixel.com/2014/09/05/steadxp-hopes-add-accelerometer-dslrs-gopros-better-image-stabilization/#more-144279

how would one use the information for stabilization ?

I can write program for this reason, but now I don't have camera for record and test it.
if anyone can record and send for me, i can test it.
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: 350D on December 27, 2016, 10:36:24 PM
As i known - SteadyXP uses audio channel to sync the movement data with video. Another idea - you can use custom app on your smartphone (gyroscopes, accelerometers) to record this data and then sync it in post somehow (sound, or trigger).
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: eNnvi on December 28, 2016, 12:12:14 AM
not shure we have enough processor speed for both recording and quaternions calculation IMHO
Title: Re: Save accelerometer data to file for post-stabilization.
Post by: saeed2vfx on December 28, 2016, 09:35:00 AM
As i known - SteadyXP uses audio channel to sync the movement data with video. Another idea - you can use custom app on your smartphone (gyroscopes, accelerometers) to record this data and then sync it in post somehow (sound, or trigger).

thanks 350D,
Almost all android app I tested can not record data with fixed sample rate  :-\

not shure we have enough processor speed for both recording and quaternions calculation IMHO
if you have a Canon Camera , test it !  ;D