使用IronOCR的自訂 OCR辨識語言包：提升文字辨識與擷取圖片文字精準度

Curtis Chau

更新:2025年6月1日

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如何為IronOCR建立自訂語言包？

建立自訂語言包需要從字體訓練新的 Tesseract 4 LSTM 語言檔案/字典。

網路上有很多教學講解了完成此操作所需的步驟。這個過程並不簡單，但還好有詳細的文件記錄。

作為入門指南，我們建議先觀看Gabriel Garcia （與我們沒有任何關聯）的YouTube 教學以及他們連結的GitHub儲存庫。

完成後，輸出將是一個 .traineddata 檔案。

然後，可以在IronOCR中按如下方式引用 .traineddata 文件：

文件： IronOCR自訂語言

using IronOcr;

class Program
{
    static void Main()
    {
        // Initialize the IronTesseract OCR engine
        var Ocr = new IronTesseract();

        // Load your custom Tesseract language file (trained .traineddata file)
        Ocr.UseCustomTesseractLanguageFile("mydir/custom.traineddata");  //<--- your new font

        // Multiple fonts can be used by calling the method multiple times with different files

        // Load an image into the OCR Input for processing
        using (var Input = new OcrInput(@"images\image.png"))
        {
            // Perform OCR on the input image
            var Result = Ocr.Read(Input);

            // Output the recognized text to the console
            Console.WriteLine(Result.Text);
        }
    }
}

using IronOcr;

class Program
{
    static void Main()
    {
        // Initialize the IronTesseract OCR engine
        var Ocr = new IronTesseract();

        // Load your custom Tesseract language file (trained .traineddata file)
        Ocr.UseCustomTesseractLanguageFile("mydir/custom.traineddata");  //<--- your new font

        // Multiple fonts can be used by calling the method multiple times with different files

        // Load an image into the OCR Input for processing
        using (var Input = new OcrInput(@"images\image.png"))
        {
            // Perform OCR on the input image
            var Result = Ocr.Read(Input);

            // Output the recognized text to the console
            Console.WriteLine(Result.Text);
        }
    }
}

Imports IronOcr

Friend Class Program
	Shared Sub Main()
		' Initialize the IronTesseract OCR engine
		Dim Ocr = New IronTesseract()

		' Load your custom Tesseract language file (trained .traineddata file)
		Ocr.UseCustomTesseractLanguageFile("mydir/custom.traineddata") '<--- your new font

		' Multiple fonts can be used by calling the method multiple times with different files

		' Load an image into the OCR Input for processing
		Using Input = New OcrInput("images\image.png")
			' Perform OCR on the input image
			Dim Result = Ocr.Read(Input)

			' Output the recognized text to the console
			Console.WriteLine(Result.Text)
		End Using
	End Sub
End Class

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