This post was last modified: 2011-07-11, 12:38 by Gunther.

When deflickering I recommend defining a reference area. This will allow you to only use a certain (constant) area of your images as reference for deflickering.

Working with the reference area is a very powerful feature so I'm going to explain the details.

• You will have to wait until all previews are loaded to be able to define the reference area.
  
• Go to the first image of your sequence
  
• Click an drag in the preview to define the reference.
  [Image: http://dl.dropbox.com/u/2088648/web/img/reference_1.jpg]
  
• You are going to see a small square around your image number
  [Image: http://dl.dropbox.com/u/2088648/web/img/reference_2.jpg]
  This shows, that you just created a "reference key-frame" - if you only have one of those the reference area will stay fixed for your whole sequence. If you want a fixed reference area please make sure that you come back to this "reference-key-framed-image" before redefining the area.
  
• If you have a moving camera or moving subjects however, you might want to animate that reference area.
  I this case go to another frame and select the destination reference area.
  [Image: http://dl.dropbox.com/u/2088648/web/img/reference_3.jpg]
  In my example the camera moved and the roof I used for reference now is further to the right. So I defined a new reference area there.
  
• As soon as you have more then one "reference-key-frames" (nothing to do with the normal key-frames) the reference are will get animated.
  
• You can define as much steps as you want.
  
• You clear your current reference-key-frame by single clicking into the preview
  
• You clear all reference-key-frames by double clicking into the preview.
  

Please note that this keyframes will not get saved - they are gone if you reload or change the folder.

Thankyou for the explanation. I was wondering how to cater for motion timelpases. Might redo a few of my timelapses

This post was last modified: 2013-01-24, 20:59 by anugrahbahl.

First of all I have learned that never shoot in jpeg but always in RAW.

currently I'm working on this deflickering clouds. I choose reference area
just the clouds once tried with static, then animated, then animated just
the blue sky area, later some of sky and some of ground but unable to deflicker.
I have not touched any of the non-linear sliders accept the 'vibrance' slider.

used reference area, deflickr and but its not working.

I shot this in M mode.

second screenshot I have added with different reference area selected.

help.

P.S. If nothing can be done to fix it. let me know as well.

I have another timelapse that was shot in same location, it was shot in RAW and has the same problem.

I think it would be better putting the reference area to the ground, in the sky there are clouds passing by.
If nothing helps you might go for the two-pass approach for deflicker:
http://forum.lrtimelapse.com/Thread-how-...d-workflow

This post was last modified: 2013-01-24, 21:52 by anugrahbahl.

I think it would be better putting the reference area to the ground, in the sky there are clouds passing by.
If nothing helps you might go for the two-pass approach for deflicker:
http://forum.lrtimelapse.com/Thread-how-...d-workflow

oh! i feared this. that i have to go through 2 pass deflicker.

but the even in the ground area the shadows of the clouds appear. I
will give it a try different reference area and (2-pass approach) and let you know if it does not works.

Thank you.

P.S. your book is very thorough and explanatory but I don't know where
I'm wrong in operating the Lrtimelapse.

This post was last modified: 2013-05-16, 04:19 by snahl.

When deflickering I recommend defining a reference area. This will allow you to only use a certain (constant) area of your images as reference for deflickering.

Working with the reference area is a very powerful feature ...

When setting several reference areas they kind of 'wobble'.
Do you seen an option so that LRTL allows to calculate them XY in linear mode?

As of now sometimes the reference areas move out of the image, I'd assume that does not matter but it's an effect the way those XY-values are calculated (wave).

Greetings, Hans.

I know, the algorithm to animate the reference area currently is a bit weak, I agree. But normally it doesn't really matter because the animation doesn't need to be that exact so I didn't put a lot of efforts into renewing that yet.