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Linguist
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Underwoods
An app that translates to and from the six Latin based languages i.e. English, Spanish, French, Italian, Portuguese and Romanian.

Linguist

Team - Underwoods

Team members

Mentors

  • Saif Kazi
  • Archeel Parekh

Description

An app that translates to and from the six Latin based languages i.e. English, Spanish, French, Italian, Portuguese and Romanian.

This app supports various input modes such as:

  • Speech
  • Image (either from gallery or camera)
  • Text

The important concepts used in this app are:

  • Speech to Text

Package used: speech_to_text

{% highlight dart %}
void initializeSpeechState() async { 
    bool hasSpeech = await speech.initialize( 
    onError: errorListener, onStatus: statusListener); 
    if (!mounted) return; 
    setState(() { 
    _hasSpeech = hasSpeech; 
    }); 
}
{% endhighlight %}
  • Image to Text

Package used: image_picker, image_cropper

 {% highlight dart %}
 Future<void> textDetect(var img) async { 
  FirebaseVisionImage ourImage = FirebaseVisionImage.fromFile(img); 
  TextRecognizer ourtext = FirebaseVision.instance.textRecognizer(); 
  VisionText readtext = await ourtext.processImage(ourImage); 

  //Extracting each word for every line in text block  
  for (TextBlock block in readtext.blocks) { 
    for (TextLine line in block.lines) { 
      for (TextElement element in line.elements) { 
        text = text + element.text + ' '; 
      } 
    } 
  } 
  ourtext.close(); 
  await translate(text); 
 } 
}
{% endhighlight %}

To crop the image

{% highlight dart %}
Future<void> cropImage(var img) async { 
  var cropped = await ImageCropper.cropImage( 
  sourcePath: img.path, 
  aspectRatioPresets: Platform.isAndroid 
  ? [ 
      CropAspectRatioPreset.square, 
      CropAspectRatioPreset.ratio3x2, 
      CropAspectRatioPreset.original, 
      CropAspectRatioPreset.tRatioPreset.ratio4x3, 
      CropAspectRatioPreset.ratio16x9 
    ] 
  : [ 
      CropAspectRatioPreset.original, 
      CropAspectRatioPreset.tRatioPreset.square,  
      CropAspectRatioPreset.ratio3x2, 
      CropAspectRatioPreset.ratio4x3, 
      CropAspectRatioPreset.ratio5x3, 
      CropAspectRatioPreset.ratio5x4, 
      CropAspectRatioPreset.ratio7x5, 
      CropAspectRatioPreset.ratio16x9 
    ], 
   {% endhighlight %}
  • Translation

Package used: firebase_mlkit_language

This package takes time to download the language files when used for the first time.

Function with both languages as parameters to translate text

{% highlight dart %}    
Future<void> translate(String text) async { 
 inputText = text; 
 var result = await FirebaseLanguage.instance 
 .languageTranslator(MainScreen.translateFrom, MainScreen.translateTo) 
 .processText(inputText); 
 setState(() { 
 MainScreen.translatedText = result; 
 });
}
{% endhighlight %}
  • Text to audio

Package used: flutter_tts

Function for pronunciation of translated text

{% highlight dart %}
Future _speak({String text, String lang}) async { 
 await flutterTts.setVolume(volume); 
 await flutterTts.setSpeechRate(rate); 
 await flutterTts.setPitch(pitch); 
 await flutterTts.setLanguage(lang); 

 if (text != null) { 
  if (text.isNotEmpty) { 
    var result = await flutterTts.speak(text); 
    if (result == 1) setState(() => ttsState = TtsState.playing); 
  } 
 } 
} 
{% endhighlight %}

Technology stack

  • Language

    • Dart

  • Framework

    • Flutter

Applications

  • In this ever developing world we cannot let language become a barrier for communication, hence Linguist provides translation services to our users. When you are lost in a foreign country with nothing but street signs that you cannot decipher, Linguist will come to your rescue. With the text to speech feature the user can communicate without being misunderstood due to language issues.
  • If you're a multilingual book lover who's stuck at a sentence, just Linguist it !

Future scope

  • Currently Linguist offers six Latin based languages. In the near future we hope to make a plethora of languages available to our users.
  • We also plan to add a history feature so that our users can revisit their previous searches.

UI design

image