How to display blue color after doing imbinarize

I have a picture including black, blue and green color as attached 1.JPEG. And then, when I use imbinarize, the picture shows as 2.JPEG. And I would like to get only 0 and 1 pixels for this picture.

I = imread('C:\User\1.JPEG');

I = imbinarize(I);

[madhan ravi]

If you close the question no one would be able to answer your question.