How to translate this image processing from Matlab to OpenCV?

Question

The link below use Matlab to remove non-text content from an image. I want to do the same thing with OpenCV in Java.

I don\'t have a Matlab to try with and I am new

Answer 1

Posting as an answer just to show the result of the OpenCV text detection example

Now you need to apply text recognition, using for example OCRHMMDecoder

You'll find a sample here