Data file not found

[yuliantosb]

Hello @gustavomazzoni
there is an error on my application, the error like this, I try to figure it out, but I surrender, I have no idea what should I do, please help me

D/SystemWebChromeClient: file:///android_asset/www/js/percobaan.js: Line 28 : Error on recognizing text from image. Data file not found at /storage/emulated/0/OCRFolder/tessdata/en.traineddata
I/chromium: [INFO:CONSOLE(28)] "Error on recognizing text from image. Data file not found at /storage/emulated/0/OCRFolder/tessdata/en.traineddata", source: file:///android_asset/www/js/percobaan.js (28)
D/CordovaActivity: Paused the activity.
D/CordovaActivity: Stopped the activity.
E/chromium: [ERROR:gl_context_virtual.cc(39)] Trying to make virtual context current without decoder.

here's my code

function cameraTakePicture() { 
   navigator.camera.getPicture(onSuccess, onFail, {  
      quality: 50, 
      destinationType: Camera.DestinationType.DATA_URL
   });  
   
   function onSuccess(imageData) { 
   	
		imageData = "data:image/jpeg;base64," + imageData;

		TesseractPlugin.recognizeText(imageData, 'en', function(recognizedText) {
		  $scope.text = recognizedText;
		  console.log(recognizedText);
		}, function(reason) {
		  console.log('Error on recognizing text from image. ' + reason);
		});
   }  
   
   function onFail(message) { 
      alert('Failed because: ' + message); 
   } 
}

[yuliantosb]

Hi, I got another issue, the error like this

Failed to read bitmap please help me, I'm begging you :(

[ghost]

@yuliantosb Change "en" to "eng" and you should be fine :)

[futurestar001]

Even if "en" is changed to "eng", it still returned "Failed to read bitmap", any solution?

[nicksanchezc137]

@futurestar001 what are your camera options? It should be
destinationType: Camera.DestinationType.DATA_URL

[futurestar001]

@nicksanchezc137 Really works~Thanks so much! I even tried to dip into the lib, you saved me much effort, appreciate!

[futurestar001]

@nicksanchezc137 I tried to dip into the lib to replace tesseract 3.0.4 with tesseract 4, but got no libs in cordova-plugin-tesseract, so I'm very confused that TesseractPlugin.java import many libs, but how do the code and libs connect each other and make the plugin work?
I got some clue that dependencies should be updated to support tesseract 4, and two-tess library is depended, but I am still not clear about it. Have you done some research about tesseract 4 integration before or do you have some idea on how to support tesseract 4 in the plugin? If so, could you give some guidance or give a direction?
Looking forward to your reply. Thanks so much in advance!

[ihsanberahim]

@futurestar001 You are lucky. I try today and still face same error Failed to read bitmap.

Here is my env

Ionic:

   ionic (Ionic CLI)             : 4.12.0 (/usr/local/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.4.0
   @angular-devkit/build-angular : 0.13.9
   @angular-devkit/schematics    : 7.3.9
   @angular/cli                  : 7.3.9
   @ionic/angular-toolkit        : 1.5.1

Cordova:

   cordova (Cordova CLI) : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms     : android 8.0.0
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 4.0.1, (and 8 other plugins)

System:

   Android SDK Tools : 26.1.1 (/Users/ihsanberahim/Library/Android/sdk)
   ios-deploy        : 1.9.4
   NodeJS            : v8.16.0 (/usr/local/Cellar/node@8/8.16.0/bin/node)
   npm               : 6.9.0
   OS                : macOS Mojave
   Xcode             : Xcode 10.2.1 Build version 10E1001

Can you share your env.

[giorgiobeggiora]

same problem here :(

[tryhardest]

Same here. Bitmap.getconfig() crash. @giorgiobeggiora @ihsanberahim did you guys solve it?

[ihsanberahim]

@tryhardest i use different solution. i not using this plugin at the end.

[giorgiobeggiora]

@ihsanberahim are you using another plugin? Can you tell us the solution you're using? Thanks in advance.

[ihsanberahim]

i use capacitor instead of cordova. So, i integrate firebase ML Text Recognition native library directly. MLKit support offline and online at the same time. It is easy like several hours learning and several hour implementation.

https://twitter.com/ihsanberahim/status/1136777938429288449?s=21

[JuneTwooo]

Better use https://github.com/NeutrinosPlatform/cordova-plugin-mobile-ocr/

It's 100% offline and had a better OCR recognition