Automatic threshold using inter-class variance is described in the NI vision help as shown in figure below. My question is what is the difference between the last two equations; they are exactly the same. what do they indicate ?
snap from the manual
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i suppose you have a better chance of getting an answer in [Math stack exchange](https://math.stackexchange.com/) – Ulug Toprak Aug 18 '17 at 10:05
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On any site, you're going to have to define the variables if you hope for an answer. – Brick Sep 16 '17 at 01:53
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I guess these formulas are not correct. w(k) ususally is the class probability which cannot be the same as the total mean µ_T
Read https://en.wikipedia.org/wiki/Otsu%27s_method
I guess they mean the same method as they both maximize the inter-class variance.
Piglet
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