附加 OCR 語言包

Curtis Chau

更新:8月 24, 2025

Translated

View the article in English

IronOCR 支援 125 種國際語言，但 IronOCR 預設只安裝了英語。

可以透過 NuGet 或 DLL 檔案輕鬆地將其他語言套件新增至您的 C#、VB 或ASP.NET專案中，下載這些 DLL 檔案並將其新增為專案參考。

程式碼範例

國際語言範例

Install-Package IronOcr.Languages.ChineseSimplified

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use Chinese Simplified
ocr.Language = OcrLanguage.ChineseSimplified;

using (var input = new OcrInput())
{
    // Add an image to be processed
    input.AddImage("img/chinese.gif");

    // Optional: Enhance the input by deskewing or denoising the image
    // input.Deskew();
    // input.DeNoise();

    // Process the image and retrieve the result
    var result = ocr.Read(input);

    // Store the recognized text in a string
    string testResult = result.Text;

    // Save the recognized text to a file since the console might not display Unicode characters properly
    result.SaveAsTextFile("chinese.txt");
}

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use Chinese Simplified
ocr.Language = OcrLanguage.ChineseSimplified;

using (var input = new OcrInput())
{
    // Add an image to be processed
    input.AddImage("img/chinese.gif");

    // Optional: Enhance the input by deskewing or denoising the image
    // input.Deskew();
    // input.DeNoise();

    // Process the image and retrieve the result
    var result = ocr.Read(input);

    // Store the recognized text in a string
    string testResult = result.Text;

    // Save the recognized text to a file since the console might not display Unicode characters properly
    result.SaveAsTextFile("chinese.txt");
}

Imports IronOcr

Private ocr = New IronTesseract()
' Set the OCR to use Chinese Simplified
ocr.Language = OcrLanguage.ChineseSimplified

Using input = New OcrInput()
	' Add an image to be processed
	input.AddImage("img/chinese.gif")

	' Optional: Enhance the input by deskewing or denoising the image
	' input.Deskew();
	' input.DeNoise();

	' Process the image and retrieve the result
	Dim result = ocr.Read(input)

	' Store the recognized text in a string
	Dim testResult As String = result.Text

	' Save the recognized text to a file since the console might not display Unicode characters properly
	result.SaveAsTextFile("chinese.txt")
End Using

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豎式書寫語言範例

專為豎立語言設計的字典。使用韓語和日語 OCR 語言的"垂直"變體。

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use Japanese Vertical language
ocr.Language = OcrLanguage.JapaneseVertical;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use Japanese Vertical language
ocr.Language = OcrLanguage.JapaneseVertical;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

Imports IronOcr

Private ocr = New IronTesseract()
' Set the OCR to use Japanese Vertical language
ocr.Language = OcrLanguage.JapaneseVertical

Using input = New OcrInput("images\image.png")
	' Process the image and get the OCR result
	Dim result = ocr.Read(input)
	' Output the recognized text to the console
	Console.WriteLine(result.Text)
End Using

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自訂語言範例

適用於您下載或自行訓練的任何 Tesseract .traineddata 語言檔案。

using IronOcr;

var ocr = new IronTesseract();

// Use a custom Tesseract language file
ocr.UseCustomTesseractLanguageFile("custom_tesseract_files/custom.traineddata");

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

using IronOcr;

var ocr = new IronTesseract();

// Use a custom Tesseract language file
ocr.UseCustomTesseractLanguageFile("custom_tesseract_files/custom.traineddata");

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

Imports IronOcr

Private ocr = New IronTesseract()

' Use a custom Tesseract language file
ocr.UseCustomTesseractLanguageFile("custom_tesseract_files/custom.traineddata")

Using input = New OcrInput("images\image.png")
	' Process the image and get the OCR result
	Dim result = ocr.Read(input)
	' Output the recognized text to the console
	Console.WriteLine(result.Text)
End Using

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多語言範例

同時學習多種語言。

Install-Package IronOcr.Languages.Arabic

using IronOcr;

var ocr = new IronTesseract();

// Set the primary language to English
ocr.Language = OcrLanguage.English;
// Add Arabic as a secondary language
ocr.AddSecondaryLanguage(OcrLanguage.Arabic);
// Add any number of languages

using (var input = new OcrInput(@"images\multi-lang.pdf"))
{
    // Process the PDF and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

using IronOcr;

var ocr = new IronTesseract();

// Set the primary language to English
ocr.Language = OcrLanguage.English;
// Add Arabic as a secondary language
ocr.AddSecondaryLanguage(OcrLanguage.Arabic);
// Add any number of languages

using (var input = new OcrInput(@"images\multi-lang.pdf"))
{
    // Process the PDF and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

Imports IronOcr

Private ocr = New IronTesseract()

' Set the primary language to English
ocr.Language = OcrLanguage.English
' Add Arabic as a secondary language
ocr.AddSecondaryLanguage(OcrLanguage.Arabic)
' Add any number of languages

Using input = New OcrInput("images\multi-lang.pdf")
	' Process the PDF and get the OCR result
	Dim result = ocr.Read(input)
	' Output the recognized text to the console
	Console.WriteLine(result.Text)
End Using

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更快的語言範例

專為快速使用而設計的字典。使用任何 OcrLanguage 的"快速"版本。

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use the fast variant of English
ocr.Language = OcrLanguage.EnglishFast;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use the fast variant of English
ocr.Language = OcrLanguage.EnglishFast;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

Imports IronOcr

Private ocr = New IronTesseract()
' Set the OCR to use the fast variant of English
ocr.Language = OcrLanguage.EnglishFast

Using input = New OcrInput("images\image.png")
	' Process the image and get the OCR result
	Dim result = ocr.Read(input)
	' Output the recognized text to the console
	Console.WriteLine(result.Text)
End Using

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更高精度的詳細語言範例

字典經過優化，準確性更高，但檢索速度較慢。使用任何 OcrLanguage 的"最佳"版本。

Install-Package IronOcr.Languages.French

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use the best variant of French
ocr.Language = OcrLanguage.FrenchBest;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

using IronOcr;

var ocr = new IronTesseract();
// Set the OCR to use the best variant of French
ocr.Language = OcrLanguage.FrenchBest;

using (var input = new OcrInput(@"images\image.png"))
{
    // Process the image and get the OCR result
    var result = ocr.Read(input);
    // Output the recognized text to the console
    Console.WriteLine(result.Text);
}

Imports IronOcr

Private ocr = New IronTesseract()
' Set the OCR to use the best variant of French
ocr.Language = OcrLanguage.FrenchBest

Using input = New OcrInput("images\image.png")
	' Process the image and get the OCR result
	Dim result = ocr.Read(input)
	' Output the recognized text to the console
	Console.WriteLine(result.Text)
End Using

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