Give me some help to solve this problem ?

This is not work! Why ?????

Answer 1

[Erivelton Gualter]

First, your code shows two different variables: BW and bw.

Also, you might adjust the binarization with some threshold.

BW = imbinarize(I, T); % T is the constant threshold value.

[Ulzii Bayar]

Thank, you so much your answer :) First time ,I write code in matlab.I have one question.What is the threshold ?

[Erivelton Gualter]

Here is more information about imbinarize.

Basically, it is a contanst value from 0 to 1 used when converting to binary image.