Cycling 74 » Topic: Find only 1 blob based on threshold http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/feed Wed, 19 Jun 2013 19:39:30 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-48755 <![CDATA[Find only 1 blob based on threshold]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-48755 Wed, 24 Feb 2010 21:29:37 +0000 Luis Marques Hi,

I’m trying to figured out how can i extract only 1 blob from a binary image, i based the detection whit an op object just to filter the other blobs, like a threshold.
If someone have time to help me out :)

Thanks

Luis Marques

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]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175219 <![CDATA[Re: Find only 1 blob based on threshold]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175219 Thu, 25 Feb 2010 01:10:58 +0000 loadmess Hi! ;)
With frame subtraction you get a very unstable image because framesub measures the amount of movement/change in a image so its hard to track a precise blob.
Check this, I hope it helps.

Best wishes!

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]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175220 <![CDATA[Re: Find only 1 blob based on threshold]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175220 Thu, 25 Feb 2010 01:46:41 +0000 Luis Marques hi,

thanks for the reply! great example. but extracting the coordinates now is impossible, due to the lack os cv.jit.label before the cv.jit.blob’s…
Any solution? Applying the cv.jit.label after the op==1, will fix it?

Thanks

Luis Marques

]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175221 <![CDATA[Re: Find only 1 blob based on threshold]]> http://cycling74.com/forums/topic/find-only-1-blob-based-on-threshold/#post-175221 Thu, 25 Feb 2010 04:01:39 +0000 loadmess Hi!
You’re right!
Only worked with cv.jit.centroid.

Best wishes!

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