MLKitTextRecognize

App will:

Utilize the ML Kit Text Recognition API to detect text in images.

You'll learn:

How we can use Firebase ML Kit SDK in Android with Machine learning capability.

• Get FirebaseVisionText object from Bitmap:

     private fun runTextRecognition() {
        val image = mSelectedImage?.let { FirebaseVisionImage.fromBitmap(it) }
        val detector = FirebaseVision.getInstance().visionTextDetector
        button_text.isEnabled = false
        image?.let {
            detector.detectInImage(it)
                    .addOnSuccessListener {
                        button_text.isEnabled = true
                        processTextRecognitionResult(it)
                    }
                    .addOnFailureListener {
                        button_text.isEnabled = true
                        showToast(it.localizedMessage)
                    }
        }


     }

• Get texts elements result from FirebaseVisionText :

     private fun processTextRecognitionResult(firebaseVisionText: FirebaseVisionText?) {
        firebaseVisionText?.let {
            val blocks = firebaseVisionText.blocks
            when (blocks.size) {
                0 -> showToast("No texts found")
                else -> {
                    graphic_overlay.clear()
                    for (block in blocks.indices) {
                        val lines = blocks[block].lines
                        for (line in lines.indices) {
                            val elements = lines[line].elements
                            for (element in elements.indices) {
                                val textGraphic = TextGraphic(graphic_overlay, elements[element])
                                graphic_overlay.add(textGraphic)
                            }
                        }
                    }
                }
            }
        }
     }

Output:

Image One result	Image Two result	Image Three result

NOTE:

To successfully sync this project, need to set up this app into your Firebase project. Kindly follow below link to "Add Firebase to Your Android Project": https://firebase.google.com/docs/android/setup

References:

• Recognize text in images with ML Kit for Firebase
• ML Kit - Text Recognition

Built With

• Android Studio - The Official IDE for Android
• Kotlin - The Official Language for Android ❤️
• Gradle - Build tool for Android Studio

Pull Requests

I welcome and encourage all pull requests to learn something new.

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Images credits

https://unsplash.com/