.NET APIs to perform OCR and OMR on images

Add image based Optical Character Recognition & Optical Mark Recognition features to your .NET applications.

  Download Free Trial
Aspose.OCR for .NET

Aspose.OCR for .NET


Aspose.OCR for .NET is an optical character and mark recognition API that allows developers to add OCR and OMR functionalities to their ASP.NET web applications, web services and Windows applications without requiring any additional tool or API.

The .NET OCR API is extensible, easy to use, compact, and it provides a simple set of classes for controlling character & mark recognition. It is aimed at developers who need to find text or human-marked data in image files from within their own applications.


Advanced OCR & OMR API Features



Read text or characters from images


Support for commonly used image file formats


Support for global languages


Read text or characters in popular fonts


Support for font styles


Scan the whole image or any part of the image


Scan rotated images


Support for noise removal filters


Extract optical marked elements from scanned documents


Support for various optical marked elements


Create templates dynamically or graphically using OMR Template Editor


Preview extracted data using OMR Template Editor

Simplest APIs to Perform OCR on Images

In just 4 lines of code, add OCR functionality to your .NET applications to capture text from images. It is really that simple!

Perform OCR on image - C#

// create an instance of OcrEngine
var engine = new Aspose.OCR.OcrEngine();
// set image file
engine.Image = ImageStream.FromFile(dir + "template.jpg");
// process the image
// get results

Scan Whole Image or Portion

Aspose.OCR for .NET allows the developers to extract text and related information such as font, style & location of the text from specific parts of an image. This feature allows performing the OCR operation quickly on document scans that follow the similar structure.

Recognize Text in Popular Fonts & Styles

Aspose.OCR for .NET supports Arial, Times New Roman, Courier New, Verdana, Tahoma and Calibri fonts in regular, bold and italic text styles.

Support for Global Languages

Aspose.OCR for .NET supports multiple languages such as English, French, Spanish and Portuguese. More languages are to be supported with future releases of Aspose.OCR for .NET.

Easy to Use Noise Removal Filters

Aspose.OCR for .NET supports noise removal filters. You can apply noise removal filters before image recognition to improve the overall accuracy rate.

Capture Human-Marked Data from Images

Aspose.OCR for .NET also provides OMR functionality - enabling developers to utilize OMR feature to extract human-marked data from scanned forms, surveys, tests and so on. The OMR related classes of Aspose.OCR API support Check Box, Choice Box, Grid, Barcode (requires Aspose.BarCode) & OCR elements for recognition.

Visual OMR Template Editor

Aspose.OCR for .NET provides the OMR Template Editor that can be used to graphically design the OMR templates as well as perform the recognition without writing a single line of code. OMR Template Editor can also be integrated with Aspose.BarCode API to recognize the barcodes on the scanned OMR forms.


Support and Learning Resources


Aspose.OCR offers individual OCR APIs for other popular development environments as listed below: