Declaration

TIEVisionOCR = interface(TIEVisionBase)

Description

An interface to perform OCR (Optical Character Recognition) in English and 110 other languages:

Afrikaans, Albanian, Amharic, Ancient Greek, Arabic, Armenian, Assamese, Azerbaijani, Basque, Belarusian, Bengali, Bosnian, Breton, Bulgarian, Burmese, Catalan,
Cebuano, Cherokee, Simplified Chinese, Traditional Chinese, Corsican, Croatian, Czech, Danish, Dhivehi, Dutch, Dzongkha, English, Equations, Esperanto, Estonian,
Faroese, Filipino, Finnish, Frankish, French, Gaelic, Galician, Georgian, German, Greek, Gujarati, Haitian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Inuktitut,
Irish, Italian, Japanese, Javanese, Kannada, Kazakh, Khmer, Korean, Kurdish, Kyrgyz, Lao, Latin, Latvian, Lithuanian, Luxembourgish, Macedonian, Malay, Malayalam,
Maltese, Maori, Marathi, MICR, Middle English, Middle French, Mongolian, Nepali, Norwegian, Occitan, Oriya, Pashto, Persian, Polish, Portuguese, Punjabi, Quechua,
Romanian, Russian, Sanskrit, Serbian, Sindhi, Sinhala, Slovakian, Slovenian, Spanish, Sundanese, Swahili, Swedish, Syriac, Tagalog, Tajik, Tamil, Tatar, Telugu, Thai,
Tibetan, Tigrinya, Tongan, Turkish, Ukrainian, Urdu, Uyghur, Uzbek, Vietnamese, Welsh, Western Frisian, Yiddish, Yoruba

Recognition supports:
◼Reading ANSI or Unicode text from a raster image
◼Estimating the document orientation (text angle)
◼Getting each recognized character position (bounding boxes)
◼Getting text regions (to reproduce text layout)



To change the language of OCR, specify the path of the language file when calling IEVisionLib.createOCR. You can download language files from:
www.imageen.com/download/

Note:
◼Only one single instance of this object can exist in your application
◼A shortcut method for this is available: OCR
◼To find text boxes in photographs, you can use detectTexts

Demos

Examples

OCR := IEVisionLib.createOCR(IEOCRLanguageList[OCR_English_language].Code);
str := OCR.recognize(ImageEnView1.IEBitmap.GetIEVisionImage(), IEVisionRect(0, 0, 0, 0)).c_str();

OR

lang := 'fra'; // French
if FileExists( IncludeTrailingPathDelimiter( ExtractFilePath( Application.ExeName )) + lang + '.traineddata' ) = False then
  raise Exception.create( 'Language file not found' );
OCR := IEVisionLib.createOCR( lang );
str := OCR.recognize(ImageEnView1.IEBitmap.GetIEVisionImage(), IEVisionRect(0, 0, 0, 0)).c_str();

OR for multiple languages:

var
  langs: TIEVisionVectorString;
langs := IEVisionLib.createVectorString();
langs.push_back( IEOCRLanguageList[ OCR_English_language ].Code );  // load English
langs.push_back( IEOCRLanguageList[ OCR_Italian_language ].Code );  // load Italian
m_OCR := IEVisionLib.createOCR( '', langs );
str := m_OCR.recognize(ImageEnView1.IEBitmap.GetIEVisionImage(), IEVisionRect(0, 0, 0, 0)).c_str();

Methods and Properties

      

See Also

◼createOCR
◼TIEVisionLanguages
◼TIEVisionOCRWordBox
◼IEVisionLanguageCodeToName
◼IEVisionLanguageNameToCode
◼IEVisionGetLanguagesInFolder

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