واجهة برمجة تطبيقات .NET OCR الرائدة لعمليات التعرف الضوئي على الأحرف

قم بتثبيت Aspose.Pdf عبر NuGet Command

 Install-Package Aspose.OCR

يمكنك تنزيل المكتبة مباشرة من Aspose.PDF صفحة المنتج

كيفية تحميل الصورة واكتشاف منطقة صورة معينة عبر C# API؟

Aspose.OCR.AsposeOcr recognitionEngine = new Aspose.OCR.AsposeOcr();
// Add an image to OcrInput object
Aspose.OCR.OcrInput input = new Aspose.OCR.OcrInput(Aspose.OCR.InputType.SingleImage);
input.Add("source.png");
// Set document areas detection mode
Aspose.OCR.RecognitionSettings recognitionSettings = new Aspose.OCR.RecognitionSettings();
recognitionSettings.DetectAreasMode = Aspose.OCR.DetectAreasMode.DOCUMENT;
// Recognize image
List results = recognitionEngine.Recognize(input, recognitionSettings);
foreach(Aspose.OCR.RecognitionResult result in results)
{
	Console.WriteLine(result.RecognitionText);
}

تطبيق عوامل التصفية على الصور باستخدام C# .NET API

Aspose.Drawing.Rectangle blackRectangle = new Aspose.Drawing.Rectangle(5, 161, 340, 113);
Aspose.OCR.Models.PreprocessingFilters.PreprocessingFilter filters = new Aspose.OCR.Models.PreprocessingFilters.PreprocessingFilter();
// (1) Invert black region
filters.Add(Aspose.OCR.Models.PreprocessingFilters.PreprocessingFilter.Invert(blackRectangle));
// (2) Denoise entire image
filters.Add(Aspose.OCR.Models.PreprocessingFilters.PreprocessingFilter.AutoDenoising());

كيفية مقارنة النص في صورتين باستخدام .NET API؟

 
using System;
using Aspose.OCR;
using System.Drawing;
 
class Program
{
    static void Main()
    {
        // Load the images
        var image1 = Image.FromFile("image1.png");
        var image2 = Image.FromFile("image2.png");
 
        // Extract text from the images
        var ocrEngine = new OcrEngine();
        ocrEngine.Image = ImageStream.FromImage(image1);
        ocrEngine.Process();
        var text1 = ocrEngine.Text;
 
        ocrEngine.Image = ImageStream.FromImage(image2);
        ocrEngine.Process();
        var text2 = ocrEngine.Text;
 
        // Compare the extracted text
        var areEqual = string.Equals(text1, text2, StringComparison.OrdinalIgnoreCase);
        Console.WriteLine("Are the texts equal? " + areEqual);
    }
}
//Note that the above code only works for exact text matches. 

كيفية البحث عن نص في صورة عبر .NET؟

Aspose.OCR.AsposeOcr recognitionEngine = new Aspose.OCR.AsposeOcr();
Aspose.OCR.RecognitionSettings recognitionSettings = new Aspose.OCR.RecognitionSettings();
recognitionSettings.Language = Aspose.OCR.Language.Ukr;
if(recognitionEngine.ImageHasText("source.png", "Aspose", recognitionSettings))
{
	Console.WriteLine(@"The image contains the word ""Aspose""");
}
else
{
	Console.WriteLine(@"The image doesn't contain the word ""Aspose""");
}