Aspose.OCR for .NET 22.4 - Release Notes

All Features

OCRNET-493Implement algorithm for improved .xlsx file creation (placement of result by cells)Enhancement
OCRNET-494Implement algorithm for improved .txt file creation (placement of result by position)Enhancement
OCRNET-486Extend the enum AreasType with value WORDS and add the ability to get words coordinates as a resultEnhancement
OCRNET-491Implement the ability to save recognition result as a PDF in MemoryStreamEnhancement
OCRNET-490Implement the ability to load PDF from MemoryStreamEnhancement
OCRNET-495Test ONNX runtime library new releasesEnhancement


  • improved algorithm for XLSX files creation
  • improved algorithm for TXT files creation
  • added ability to recognize PDF from stream
  • added ability to save result as the file stream
  • added AreasType.WORDS for parameters in GetRectangles method
  • update ONNX runtime version

Public API and Backwards Incompatible Changes


  • added new value to the enum AreasType - WORDS
  • added new overload for the method RecognizePdf in the AsposeOcr class
  • added new overload for the method Save in the RecognitionResult class

Removed APIs

All methods of the previous release are supported.

Will be deprecated

Usage Example

using Aspose.OCR;

namespace ProgramOCR
    class Program
        static void Main(string[] args)
            // Get API
            AsposeOcr api = new AsposeOcr();

            // Create license
            License lic = new License();

            // Set license

            // Get pdf for recognize
            string imagePdf = "D://img.pdf";

            // Recognize pdf from stream           
            using (MemoryStream ms = new MemoryStream())
                using (FileStream file = new FileStream(imagePdf, FileMode.Open, FileAccess.Read))

                    DocumentRecognitionSettings set = new DocumentRecognitionSettings();
					List<RecognitionResult> results = api.RecognizePdf(ms, set);     

		            // Print result
					foreach (var result in results)

			// Get image for recognize
            string image = "D://img.png";

			// Recognize image
			RecognitionResult result = api.RecognizeImage(imgPath, new RecognitionSettings { DetectAreas = false});

			// Save result to stream
			using (MemoryStream msout = new MemoryStream())
                result.Save(msout, SaveFormat.Text);
				// check
                //using (var fileStream = new FileStream("file_for_check.txt", FileMode.Create))
                //    msout.Seek(0, SeekOrigin.Begin);
                //    msout.CopyTo(fileStream);

			// Get words coordinates
			List<Rectangle> resultRectangles = api.GetRectangles(image, AreasType.WORDS, true);
			// Print result
			foreach (Rectangle rectangle in resultRectangles)
				Console.WriteLine($"x={rectangle.X}, y={rectangle.Y}, width={rectangle.Width}, height={rectangle.Height}");