Photoshop :: Filtering Selection By Cluster Size

Feb 14, 2013

I have an artwork that eventually be used for laser cutting. The artwork was created by Illustrator. I would like to identify very small cuts so I can eliminate them. My thinking is that it will be easier to do the analysis after rasterizing the artwork and use Photoshop for the job.I was thinking to select by color the color that marks holes (white). This will yield a selection of multiple regions (clusters). Now I would like to filter out (or in) all the clusters that meet some size criteria (contains less than X number of pixels, or that the perimeter size is more or less a value) in order to identify the small clusters.

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Please see the video below.

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Dec 22, 2012

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Here is that image reversed:

When I examined the image in more detail I noticed that the actual characters and lines were not simply black markings but in fact had various shades ranging from grey through to black within them.
 
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I hope I got that right and it makes at least some sort of sense

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I'm a former Photoshop user. The reason I no longer use it is because of a silly misunderstanding with the NSA and MI6. But hey, that's the past and I'm a believer in moving on.

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so, first off, am using photoshop CC on windows 8,
 
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Mar 16, 2011

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