Orientation

[Noitidart]

In iOS I'm having issue that if I don't take the photo in landscape it won't read the text.

And on Android I'm having issue of it only working in portrait mode.

Is this an expected thing? Is there a way to hint orientation so I don't have to rotate photo?

[agoldis]

You'd rotate the image before processing with MLKit. Reference: https://developers.google.com/ml-kit/vision/text-recognition/android

[Noitidart]

Thanks, I'm not sure how to determine the rotation though. So what I'm doing right now is rotating it 4 times and running OCR 4 times. Then I present to the user to pick which one is closest. :(

[mlcal]

@Noitidart Can you tell me how you rotate image before OCR ?

[Noitidart]

@mlcal I use Expo so I used their ImageManipulator class - https://docs.expo.dev/versions/latest/sdk/imagemanipulator/#imagemanipulatormanipulateasyncuri-actions-saveoptions

  Promise.all([
      ImageManipulator.manipulateAsync(photoResponse.uri, [{ rotate: 90 }]),
      ImageManipulator.manipulateAsync(photoResponse.uri, [{ rotate: -90 }]),
      ImageManipulator.manipulateAsync(photoResponse.uri, [{ rotate: 180 }])
  ])