Binarize Image in Android

Question

I am developing android app that uses tesseract OCR to scan a text from image,
I heard that binarizing image before performing OCR on it will give better result,
So

Answer 1

You can take a look at the simple approach that Barcode Scanner uses on Android to convert an image to luminance and then to black and white. It would probably work well for OCR.

https://code.google.com/p/zxing/source/browse/trunk/core/src/com/google/zxing/common/HybridBinarizer.java https://code.google.com/p/zxing/source/browse/trunk/core/src/com/google/zxing/PlanarYUVLuminanceSource.java