B4A Library OCR - OCR Reader Complete

susu · Sep 3, 2016

I tried your apk file. It worked great however there's no recognized text in textbox?

Johan Schoeman · Sep 4, 2016

susu said:
I tried your apk file. It worked great however there's no recognized text in textbox?

Do you see no text at all? If so, then the OCR dependencies have probably not downloaded as yet or there could be a storage related issue on your device. The dependencies should automatically download when you start the app. It takes a while for it to happen. Device must be connected to the Internet. Read the below (taken from the Java code):

if (!textRecognizer.isOperational()) {
// Note: The first time that an app using a Vision API is installed on a
// device, GMS will download a native libraries to the device in order to do detection.
// Usually this completes before the app is run for the first time. But if that
// download has not yet completed, then the above call will not detect any text,
// barcodes, or faces.
//
// isOperational() can be used to check if the required native libraries are currently
// available. The detectors will automatically become operational once the library
// downloads complete on device.

susu · Sep 4, 2016

I see recognized text in green box, I can hear it too. But when I back to main activity, there's nothing in TextBox below Start Scan button.

Johan Schoeman · Sep 4, 2016

susu said:
I see recognized text in green box, I can hear it too. But when I back to main activity, there's nothing in TextBox below Start Scan button.

OK, now I understand. I have not added code to the wrapper to return the text in this project. I can do so. Will do it sometime and then post an updated library. The text box is there from the other OCR project that I have posted as that project uses the text box to display the text that was touched. I just copied the B4A project from the other OCR project, renamed it, and did some mods for this project.

Rantor777 · Sep 17, 2016

Great, Lets Stress the OCR JFF.. +30

Tayfur · Nov 13, 2016

Hello Johan ;
Thank you for sharing;
I wan t to try it. So App cant work OCR
I cant see like your yellow word or green squares. it has not any actions.

app screenshots:

Library folder:

Project folders/files

Johan Schoeman · Dec 20, 2016

Tayfur said:
Hello Johan ;
Thank you for sharing;
I wan t to try it. So App cant work OCR
I cant see like your yellow word or green squares. it has not any actions.

app screenshots:
View attachment 49998 View attachment 49999

Library folder:
View attachment 50000

Project folders/files

View attachment 50001

Did you manage to get this working? Are you running my project in post #1 of this thread or your own project? In case you run your own project then you need to take note of the B4A manifest file of the project in post #1

roberto64 · Feb 10, 2017

hi johan, compiler I ristituisce this error as in the image.
regards

tigrot · Feb 23, 2017

Hi Roberto when I get this error i put a lower API level in Manifest, so the library is not marked as deprecated or obsolete(if you where compiling for 22 use 17 or so).
Mauro

roberto64 · Feb 24, 2017

Hi Tigrot, I solved the problem by putting in the right libs libraries, and in "-b4aignore: com" anyway thanks for your time
regards

Eme Fibonacci · Apr 7, 2017

Anyone else tested this library? Is it functional?

Xenno · Jul 28, 2017

Great work, Johan!

I'm monitoring this thread. I am expecting you or anyone else find a way how to just grab all visible text without the need to tap.

Thanks in advance.

Johan Schoeman · Sep 16, 2017

Based on the request here:
https://www.b4x.com/android/forum/threads/ocr-with-another-font-style.83852/

Added the ability to change the font style (in this case digital-7.ttf). Copy the attached lib files to your additional library folder. Copy digital-7.ttf (once unzipped) to your B4A project's /Files folder and then add it to the Files Manager tab of the B4A project's IDE.

Then change your B4A code to this:

B4X:

#Region  Project Attributes
    #ApplicationLabel: b4aOCRComplete
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: portrait
    #CanInstallToExternalStorage: False
#End Region

#AdditionalRes: ..\resource
#AdditionalRes: ..\OCRCompleteRes


'#AdditionalRes: C:\Users\----------2\Documents\Basic 4 Android\JOHAN APPS\JHS LIBS\resource\b4a_appcompat, de.amberhome.objects.appcompat
'#AdditionalRes: C:\ANDRIOD_SDK_TOOLS\extras\android\support\v7\appcompat\res, android.support.v7.appcompat
'#AdditionalRes: C:\ANDRIOD_SDK_TOOLS\extras\google\google-play-services\libproject\google-play-services_lib\res, com.google.android.gms
'#AdditionalRes: C:\ANDRIOD_SDK_TOOLS\extras\android\support\design\res, android.support.design

'#ExcludeClasses: .games, .drive, .ads, .fitness, .wearable, .measurement, .cast, .auth, .nearby
'#ExcludeClasses: .tagmanager, .analytics, .wallet, .plus, .gcm, .maps, .panorama

'#Extends: android.support.v7.app.AppCompatActivity

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: True
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
  
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private Button1 As Button
    Dim avocr As OCRReaderComplete
  
    Private CheckBox1 As CheckBox
    Private CheckBox2 As CheckBox
'    Dim bm As Bitmap
  
    Dim myfont As Typeface
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
  
    Activity.LoadLayout("main")
    avocr.Initialize("avocr")
    myfont = Typeface.LoadFromAssets("digital-7.ttf")
  
    avocr.OCRtypeFace = myfont
  
    avocr.OCRtextColor = Colors.Red                                    'the color of the text while OCR takes place
    avocr.OCRtextSize = 35.0                                              'the size of the text while OCR take place
    avocr.OCRrectangleColor = Colors.Transparent
    avocr.OCRrectangleWidth = 2.0
'    bm.Initialize(File.DirAssets,"takepicturebutton.png")
'    avocr.TakePictureImage = bm
  

End Sub

Sub Activity_Resume
  

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Sub Button1_Click

    If CheckBox1.Checked = True Then
      avocr.UseFlash = True
    Else
      avocr.UseFlash = False  
    End If  

    If CheckBox2.Checked = True Then
      avocr.UseAutoFocus = True
    Else
      avocr.UseAutoFocus = False      
    End If

    avocr.StartOCRReader

End Sub

I get this:

microbox · Sep 16, 2017

Hi Johan, I really appreciated the time for the doing my request(even I know you're busy)..but my apology if I was not clear regarding my issue. I'm using your library to read on gasoline station lcd display like the one below

When I tried scanning it, it was not successful. I was hoping there is a way for a solution for this type of font?

Best regards,
joe

Johan Schoeman · Sep 16, 2017

microbox said:
Hi Johan, I really appreciated the time for the doing my request(even I know you're busy)..but my apology if I was not clear regarding my issue. I'm using your library to read on gasoline station lcd display like the one below
View attachment 59731
When I tried scanning it, it was not successful. I was hoping there is a way for a solution for this type of font?

Best regards,
joe

You can investigate how to do it and then let me know. I have spent in excess of two hours on this and not prepared to look into this any further. If it does not get recognised then it is in the vision library - not in the wrapper

You should make sure that you are VERY clear on what it is that you want to accomplish when posting a request. Please don't send us down the wrong path - there are hours of work going into this for some of us that does this part time.

microbox · Sep 16, 2017

Johan Schoeman said:
You can investigate how to do it and then let me know. I have spent in excess of two hours on this and not prepared to look into this any further. If it does not get recognised then it is in the vision library - not in the wrapper

You should make sure that you are VERY clear on what it is that you want to accomplish when posting a request. Don't send us down the wrong path.

Yes..I will next time. Again please accept my sincere apology. And again thank you for taking the time.

Johan Schoeman · Oct 16, 2017

Syd Wright said:
Is it possible add the feature to perforn OCR on a bitmap in stead of on a camera snapshot?
Both Shivito1 and I are very interested in such a feature.

I will have to see if I can do the mods to this project to accommodate your request:

https://www.b4x.com/android/forum/threads/ocr-mobilevisiontext.82910/

Eme Fibonacci · Oct 16, 2017

Johan Schoeman said:
I will have to see if I can do the mods to this project to accommodate your request:

https://www.b4x.com/android/forum/threads/ocr-mobilevisiontext.82910/

Thank you. It would be great to make OCR in bitmap.

Johan Schoeman · Oct 18, 2017

Eme Fibonacci said:
Thank you. It would be great to make OCR in bitmap.

Here

https://www.b4x.com/android/forum/t...map-using-the-play-services-vision-api.85168/

B4A Library OCR - OCR Reader Complete

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