[opencv] - when the parameter type of cv.threshold() function is a number, what does it mean

One 、 background

Learning to calculate the function of image center distance cv2.moment() when , Find out article In the code example of threshold() The parameters of the function type It turned out to be a number ; However, I was studying before Official documents , still 90% In the process of the above folk blog , Only realize type Parameters can be expressed in string form .

Two 、 Reference resources  

stay CSDN A piece of Blog , So I explained type It is the image binarization rule in digital form .

 

Compare official documents , We can also find the above article 0-4 Five rules , The five rules from top to bottom are the same as those in official documents , Get corresponding one by one .

therefore , If readers have doubts like me , I'll see it in digital form later type, Go directly to the official documents to see the types from top to bottom , Then I can solve my doubts ！