How to extract text from image Android app

Question

I am working on a feature for my Android app. I would like to read text from a picture then save that text in a database. Is using OCR the best way? Is there another way? Google suggests in its documentation that NDK should only be used if strictly necessary but what are the downfalls exactly?

Any help would be great.

Answer 1

you can use google vision library for convert image to text, it will give better output from image. Add below library in build gradle:

   compile 'com.google.android.gms:play-services-vision:10.0.0+'

    TextRecognizer textRecognizer = new TextRecognizer.Builder(getApplicationContext()).build();

Frame imageFrame = new Frame.Builder()

        .setBitmap(bitmap)                 // your image bitmap
        .build();

String imageText = "";


SparseArray<TextBlock> textBlocks = textRecognizer.detect(imageFrame);

for (int i = 0; i < textBlocks.size(); i++) {
    TextBlock textBlock = textBlocks.get(textBlocks.keyAt(i));
    imageText = textBlock.getValue();                   // return string
}