• Adobe After Effects

  Haw to separate (cut) moving objects (people) from white static background (white, dark and gray)?

  Posted by Kirill Poezdnik on March 7, 2013 at 2:15 am

  Hello everyone at this forum!
  Please, give me an advice – how to mask all moving objects from static background. There are white backround with moving people at front.
  So, this is two possible way, I hope to can be used: create a mask for all moving objects or create mask for all color (saturated) objects.
  Luma key is not done properly (in my try), because background is not really pure white and with some low shadows, so this leads to contamination of the frame.
  I have trying to use RotoBrush in AfterEffects, its can be pure good, but its to much shots for this method and I ask here for some ways to automate process.
  Also, I used Nuke, this amazing application. Its so good, but I’m new in keying and need an advice for color (saturation) masking. Or another way to separate objects from white or gray background.
  Also I have tutorial about Boris FX plugin, for removing objects from background, its good plugin, but i need inverted result – remove background from moving objects.
  Is this possible? Can you tell, please?

  Stephen Smith replied 13 years, 6 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Stephen Smith

  March 8, 2013 at 11:58 pm

  Are there a lot of moving objects? If not then you can grab the video from where the moving object isn’t in in and mask out that section and then place it over the original video so you have parts of the video playing from different parts of the video. Not sure if I’m making sense?

  Stephen Smith
  Utah Video Productions

  Check out my Motion Training DVD

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