Binarize image for specific colour

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Marina Batlló RIus
回答： Steve Eddins 2021-2-8
I need to binarize the following image so that the blue dots appear as 1 and everything else as 0. Is there any way to do that? Thank you.

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Steve Eddins
Steve Eddins 2021-2-8
Use the Color Thresholder app to generate the code needed to do this segmentation. See my 14-Oct-2019 and 25-Apr-2014 blog posts.
I suggest that you work in the L*a*b* color space. Use the a* and b* sliders to narrow down the blue pixels of interest and then generate code so that you can repeat the operation automatically.

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