使用 C# 修正 OCR识别中的图像方向以提升图片转文字精度

using IronOcr;

// Instantiate IronTesseract
IronTesseract ocrTesseract = new IronTesseract();

// Add image
using var imageInput = new OcrImageInput("paragraph_skewed.png");

// Rotate the image 180 degrees clockwise
imageInput.Rotate(180);

// Export the modified image
imageInput.SaveAsImages("rotate");

Imports IronOcr

' Instantiate IronTesseract
Private ocrTesseract As New IronTesseract()

' Add image
Private imageInput = New OcrImageInput("paragraph_skewed.png")

' Rotate the image 180 degrees clockwise
imageInput.Rotate(180)

' Export the modified image
imageInput.SaveAsImages("rotate")

/* :path=/static-assets/ocr/content-code-examples/how-to/image-orientation-correction-combined.cs */
using IronOcr;

// Create OCR engine with optimized configuration
IronTesseract ocrTesseract = new IronTesseract();

// Load and process image with all corrections
using var imageInput = new OcrImageInput("skewed_document.png");

// Apply corrections in optimal sequence
imageInput
    .Rotate(90)           // Fix major orientation
    .Deskew(15)          // Correct minor tilts
    .Scale(150, true);   // Enhance for OCR

// Perform OCR on corrected image
OcrResult result = ocrTesseract.Read(imageInput);

// Access extracted text
string extractedText = result.Text;

Imports IronOcr

' Create OCR engine with optimized configuration
Dim ocrTesseract As New IronTesseract()

' Load and process image with all corrections
Using imageInput As New OcrImageInput("skewed_document.png")

    ' Apply corrections in optimal sequence
    imageInput _
        .Rotate(90) _          ' Fix major orientation
        .Deskew(15) _          ' Correct minor tilts
        .Scale(150, True)      ' Enhance for OCR

    ' Perform OCR on corrected image
    Dim result As OcrResult = ocrTesseract.Read(imageInput)

    ' Access extracted text
    Dim extractedText As String = result.Text
End Using