Tesseract OCR shows random alphabets only

[adeel...@purelogics.net]

I'm implementing Tesseract OCR in my iOS application using real time camera update method 

    - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer

           fromConnection:(AVCaptureConnection *)connection

I am passing the input image as 

    UIImage *image = [GMVUtility sampleBufferTo32RGBA:sampleBuffer];

    [self recognizeImageWithTesseract:image];

    -(void)recognizeImageWithTesseract:(UIImage *)image {

        

        operationQueue = [[NSOperationQueue alloc] init];

    

        // Create a new `G8RecognitionOperation` to perform the OCR asynchronously

        // It is assumed that there is a .traineddata file for the language pack

        // you want Tesseract to use in the "tessdata" folder in the root of the

        // project AND that the "tessdata" folder is a referenced folder and NOT

        // a symbolic group in your project

        G8RecognitionOperation *operation = [[G8RecognitionOperation alloc] initWithLanguage:@"eng+ita"];

        

        operation.tesseract.engineMode = G8OCREngineModeTesseractOnly;

        

        // Let Tesseract automatically segment the page into blocks of text

        // based on its analysis (see G8Constants.h) for other page segmentation

        // mode options

        operation.tesseract.pageSegmentationMode = G8PageSegmentationModeAutoOnly;

        

        operation.tesseract.maximumRecognitionTime = 6.0;

       

        operation.delegate = self;

        

        operation.tesseract.charWhitelist = @"01234567890/qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM";

    

    

        operation.tesseract.image = image;

        

        [operation.tesseract  recognize];

    

        

        operation.recognitionCompleteBlock = ^(G8Tesseract *tesseract) {

    

            NSString *recognizedText = tesseract.recognizedText;

            

            NSLog(@"%@", recognizedText);

            

            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"OCR Result"

                                                            message:recognizedText

                                                           delegate:nil

                                                  cancelButtonTitle:@"OK"

                                                  otherButtonTitles:nil];

            [alert show];

        };

        

        self.takePictureButton.imageView.image = operation.tesseract.thresholdedImage;

        

        [operationQueue addOperation:operation];

    }

   

    NSString *recognizedText = tesseract.recognizedText;

The recognizedText shows random alphabets and numbers even on simple image.

Can anyone please help me out whats wrong?

PS: attached my tessdata 

Please refer to this stackoverflow link: 
https://stackoverflow.com/questions/46303707/tesseract-ocr-shows-random-alphabets-only