Set OCR whitelist in the TextRecognizer - android-vision

Question

I'm analysing the ocr-reader sample project: https://github.com/googlesamples/android-vision/tree/master/visionSamples/ocr-reader
The goal would be to replace my custom "text to image" implementation for Android (with OpenCV and Tesseract) with Android Vision.
I could not find any way to apply advanced configuration for the OCR processor. For example, in my application, only a predefined set of symbols is allowed. For that, I'm using the following code in my App:
api.SetVariable("tessedit_char_whitelist", "ABJOKEA1234");
This helps to avoid the confusion between 0 and O for example.
Is there a way to do this with android-vision? I don't see any options while building the TextRecognizer:
TextRecognizer textRecognizer = new TextRecognizer.Builder(context).build();
In a general matter, does Google plan to extend the configurability of the library? For example:
Cropping of the source image
Providing a custom OCR training file
Or is it supposed to remain a straightforward library, with just common features?
Thanks for your help!

Answer 1

I am also working on that, i am trying to make a business card reader with mobile vision, so far when the text is detected i am using checks with if conditions using strings which are generated in real time..
if (mText == null) {
return;
}
if(mText.getValue().contains("#") && mText.getValue().contains(".") && !mText.getValue().equals(mText.getValue().toUpperCase())){
Log.e("mTextemail",mText.getValue());
email=mText.getValue();
}
if (mText.getValue().startsWith("+")|| mText.getValue().startsWith("0")&& mText.getValue().contains("+-0123456789/-#")&& !mText.getValue().contains("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")){
Log.e("mTextphone",mText.getValue());
phone=mText.getValue();
}
if (!mText.getValue().contains("ABCDEFGHIJKLMNOPQRSTUVWXYZ")&& !mText.getValue().contains("0123456789-/#") && !mText.getValue().contains("abcdefghijklmnopqrstuvwxyz")){
Log.e("mTextcompanyName",mText.getValue());
companyName=mText.getValue();
}if(mText.getValue().startsWith("ABCDEFGHIJKLMNOPQRSTUVWXYZ" )&& mText.getValue().endsWith("abcdefghijklmnopqrstuvwxyz")){
name=mText.getValue();
}
if(name ==null){
name="Was not specified";
}
if(email ==null){
email="Was not specified";
}
if(phone ==null){
phone="Was not specified";
}
if(companyName ==null){
companyName="Was not specified";
}
it prints the logs with 70% accuracy, may be we can help each other and also i want these correct logs to be displayed in an activity i have used interfaces but its not working.
If you have any tips or trick that you have discovered please do share.