In addition to explicitly recognizing pages in different languages, ImageGear also has the ability to detect a page’s language. This can be done in two ways:
Calling the Preprocess Method on ImGearRecImage
Calling the Preprocess method on ImGearRecImage will report the page’s most prominent language in the DetectedLanguages property of the parent ImGearRecPage of the image. This is currently limited to returning a single language. The detected language can then be manually enabled later to perform OCR normally.
| C# |
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using (ImGearRecognition recognitionEngine = new ImGearRecognition())
{
using (ImGearRecPage page = recognitionEngine.ImportPage(rasterPage))
{
page.Image.Preprocess();
// Enable only the found languages before calling Recognize.
recognitionEngine.Recognition.LanguageEnabled.DisableAll();
foreach(ImGearRecLanguage language in page.DetectedLanguages)
{
recognitionEngine.Recognition.LanguageEnabled[language] = true;
}
page.Recognize();
}
} |
| VB.NET |
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Using recognitionEngine As New ImGearRecognition()
Using page As ImGearRecPage = recognitionEngine.ImportPage(rasterPage)
page.Image.Preprocess()
' Enable only the found languages before calling Recognize.
recognitionEngine.Recognition.LanguageEnabled.DisableAll()
For Each language As ImGearRecLanguage In page.DetectedLanguages
recognitionEngine.Recognition.LanguageEnabled(language) = True
Next
page.Recognize()
End Using
End Using |
Enabling SingleLanguageDetection Property on ImGearRecRecognitionSettings
If you enable the SingleLanguageDetection property on ImGearRecRecognitionSettings before calling recognition, the OCR engine will detect the single most prominent language automatically when performing OCR normally.
| C# |
Copy Code |
using(ImGearRecognition recognitionEngine = new ImGearRecognition())
{
using (ImGearRecPage page = recognitionEngine.ImportPage(rasterPage))
{
recognitionEngine.Recognition.SingleLanguageDetection = true;
page.Recognize();
}
} |
| VB.NET |
Copy Code |
Using recognitionEngine As New ImGearRecognition()
Using page As ImGearRecPage = recognitionEngine.ImportPage(rasterPage)
recognitionEngine.Recognition.SingleLanguageDetection = True
page.Recognize()
End Using
End Using |
