Timelapse video - Image processing with ImageMagick

Post here to shower the ImageMagick developers with praise or discuss how you could have done a better job if you developed ImageMagick. Or talk about how Photoshop is better than ImageMagick. Even complain about how no one answered your postings in the Users forum. Venting and musings welcomed here.
Post Reply
lwhistler
Posts: 27
Joined: 2010-09-15T15:33:29-07:00
Authentication code: 8675308

Timelapse video - Image processing with ImageMagick

Post by lwhistler » 2010-10-21T17:52:51-07:00

Thumbs up to ImageMajik :D ImageMagik was used extensively for all JPG image processing, over 4000 images in total. Link to YouTube video: http://www.youtube.com/watch?v=3lBPw8TtudA

I would use GIMP to get the proper color correction values and cropping coordinates on one image, then use ImageMagik to bulk process all the images in that scene.


Linux Computer Software:
Ubuntu 10.04 LTS OS
http://www.ubuntu.com
ImageMagick - Image resizing, color correction, etc.
http://www.imagemagick.org
GIMP - Image resizing, color correction, etc.
http://www.gimp.org
Mencoder - JPG to AVI conversion.
http://www.mplayerhq.hu
OpenShot - Final video editing.
http://www.openshot.org

Music:
Finding the Balance by Kevin MacLeod
http://www.incompetech.com

----------------------------------------------------------------------------------
Len Whistler
http://www.youtube.com/user/LenWhistler

User avatar
anthony
Posts: 8869
Joined: 2004-05-31T19:27:03-07:00
Authentication code: 8675308
Location: Brisbane, Australia

Re: Timelapse video - Image processing with ImageMagick

Post by anthony » 2010-10-22T19:09:54-07:00

Very good.

I would however make one suggestion.

When you have a tall flat object in the scene, such as high rise buildings, or a building on the dock, then you need to modify your tilt shift mask so that that building is blurred uniformly
from what ever part is in the plane (usually the ground) of viewing.

That is a vertical building should have a constant blur over it. While any background beyond building becomes more blurry. That is however blurry a building is at 'ground level' (your plane of interest), is how blurry the building should be all over. The Blurring mask needs represent distance from the camera.

Tall building are the real 'give away' aspect of a simple tilt-shift effect.

Scenes without tall relativity-flat vertical surfaces such as sea scapes, landscapes etc. work very well. Scenes with a strong slope like the slope of a mountain may need the bluring mask tilted to match the scene slope.

It can be a difficult adjustment to make, but one that in time lapse video can be very worth while to consider, and will make the wow-effect much more wow, especially by people who have seen tilt-shift effects before.

You don't have to so a lot, just a little consideration.


One other point. Blurring and sharpening the original image to remove small details, and color shifting to make it more 'vibrant' will also make the result much more model-like.

Keep up your work. You are on a journey that can only improve with experience. And please continue to let us know when you post more of your IM related results.
Anthony Thyssen -- Webmaster for ImageMagick Example Pages
http://www.imagemagick.org/Usage/

lwhistler
Posts: 27
Joined: 2010-09-15T15:33:29-07:00
Authentication code: 8675308

Re: Timelapse video - Image processing with ImageMagick

Post by lwhistler » 2010-10-23T18:48:24-07:00

Thanks anthony for all the tips. I have copied your post for future reference and will study all the suggestions you have made during my next project.



-----==-=

Post Reply