Aspose.OCR 22.7.0

Image Noise & Skew Correction OCR .NET API

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It is a standalone OCR API that enhances your .NET apps to perform the OCR operation on JPEG, PNG, GIF, BMP & TIFF images for extraction of English, French, Spanish & Portuguese content.

Aspose.OCR for .NET not only provides the Optical Character Recognition engine but more. You can also apply Blur, Gaussian Blur, and Median filter to reduce noise before document recognition and can set the OcrEngine to ignore non-textual blocks, maintain correct text order during document text recognition & automatically correct spellings of the document text.

Image OCR API Features

• Programmatically detect, identify and read characters from images.
• Support English, French, Spanish and Portuguese text.
• Detect and read popular font faces such as Arial, Times New Roman, Courier New, Tahoma, Calibri & Verdana.
• Supports regular, bold, and italic font styles.
• Scan the whole image or only a specific portion of the image.
• Scan rotated images.
• Application of various noise removal filters to assist image recognition.

What's new in v22.7.0

Image Noise Reduction Filter

A new preprocessing filter has been added to the OCR API that automatically removes various types of image noise; such as, unwanted gradients, glare, scratches, dirty spots, dirt, etc.

The following C# code snippet shows the Auto Denoising method of API in action:

using Aspose.OCR;

namespace ProgramOCR
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create instance of OCR API
            AsposeOcr api = new AsposeOcr();
            // Add denoise preprocessing filter
            PreprocessingFilter filters = new PreprocessingFilter {
            	PreprocessingFilter.AutoDenoising()
            };
            // Preprocess an image
            MemoryStream ms = api.PreprocessImage("image.jpg", filters)
            // Save cleaned image into a file
            using(FileStream file = new FileStream("result.png", FileMode.Create, System.IO.FileAccess.Write))
            {
            	ms.WriteTo(file);
            }
        }
    }
}

Image Skew Correction Filter

Introduced the filter that corrects the image skew by straightening (deskew) the skewed images.

The following C# code sample demonstrates how you may increase the image recognition accuracy of photos taken from smartphone or inaccurate scans by using AutoSkew() method in API:

using Aspose.OCR;

namespace ProgramOCR
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create instance of OCR API
            AsposeOcr api = new AsposeOcr();
            // Add deskew preprocessing filter
            PreprocessingFilter filters = new PreprocessingFilter {
            	PreprocessingFilter.AutoSkew()
            };
            // Preprocess an image
            MemoryStream ms = api.PreprocessImage("image.jpg", filters)
            // Save straightened image into a file
            using(FileStream file = new FileStream("result.png", FileMode.Create, System.IO.FileAccess.Write))
            {
            	ms.WriteTo(file);
            }
        }
    }
}

Better Compatibility with Aspose.OMR

Resolved the incompatibility issue between Aspose.OCR and Aspose.OMR installers.

For a complete list of features, enhancements, and bug fixes in this release please visit, Aspose.OCR for .NET 22.7 - Release Notes.

Read Image Formats for OCR

Raster Formats: JPEG, PNG, GIF, BMP, TIFF

Platform Independence

You can use Aspose.OCR for .NET to develop applications in any development environment that targets the .NET Framework 2.0 and higher. This includes support for Mono and Client Profiles.

Get Started with Aspose.OCR for .NET

Are you ready to give Aspose.OCR for .NET a try? Simply execute Install-Package Aspose.OCR from Package Manager Console in Visual Studio to fetch the NuGet package. If you already have Aspose.OCR for .NET and want to upgrade the version, please execute Update-Package Aspose.OCR to get the latest version.

Execute the following code snippet to see how Aspose.OCR API performs with your own samples or simply check the GitHub Repository for other common usage scenarios.

Perform OCR on PNG Image via C# Code

// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_OCR();

// Initialize an instance of AsposeOcr
AsposeOcr api = new AsposeOcr();

// Recognize image
string result = api.RecognizeImage(dataDir + "sample.png");

// Display the recognized text
Console.WriteLine(result);

Product Page | Docs | Demos | API Reference | Examples | Blog | Search | Free Support | Temporary License