For a Trimap, how do to calculate the number of pixels in background, foreground and unknown region?

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Hi all,
I have attached a trimap image on which i am working. I need to determine the number of pixels which are definitely background, definitely foreground and in the unknown region. Can anyone help?
Thanks
  1 件のコメント
Image Analyst
Image Analyst 2014 年 1 月 18 日
I never heard of a trimap. You forgot to attach your image. Please define what parts of your image (once we can actually see it) are foreground, background, and unknown.

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