Aspose.OCR for .NET 21.10 - Release Notes

This page contains release notes information for Aspose.OCR for .NET 21.10

GPU version: 21.6.0

All Features

Key	Summary	Category
OCRNET-425	Ability to set letters/symbols enum in Recognition settings	Enhancement
OCRNET-422	Investigate contrast correction algorythm in OCR-cloud code	Enhancement
OCRNET-420	Implement median blur filter.	Enhancement
OCRNET-419	Implement adaptive median thresholding.	Enhancement
OCRNET-421	Implement MorphologyEx: advanced morphological transformations.	Enhancement

Enhancements

• added ability to set contrast correction preprocessing filter before recognition
• extended preprocessing filters with median and contrast correction filters
• added ability to set only digits or latin letters recognition

Public API and Backwards Incompatible Changes

New API

• added new filters in the PreprocessingFilters: Median, ContrastCorrectionFilter
• added new property in the RecognitionSettings class: - AutoContrast - AllowedCharacters
• added enum CharactersAllowedType

Removed APIs

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 
            lic.SetLicense("Aspose.Total.lic");

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

            // set filters as you need
            PreprocessingFilter filters = new PreprocessingFilter
            {
                 PreprocessingFilter.Median(),
				 PreprocessingFilter.ContrastCorrectionFilter()
            };
			
            // use filters as settings in recognition process
            var res = api.RecognizeImage(image, new RecognitionSettings { PreprocessingFilters = filters });
            Console.WriteLine(res.RecognitionText);
			
			
					
			// Set allowed characters (only digits)
			 var res2 = api.RecognizeImage(imgPath, new RecognitionSettings
            {
                AllowedCharacters = CharactersAllowedType.DIGITS // ALL, LATIN_ALPHABET
            });
        }
    }
}