Aspose.OMR 22.5.0

Return OMR Image Recognition Results via .NET API

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It is a standalone on-premise API that helps in recognizing the human-marked data from images of scanned documents, surveys, questionnaires, quizzes, and examination papers.

Aspose.OMR for .NET not only acts as an Optical Mark Recognition engine. It also provides a handy graphical control that can be used for manual tuning of the threshold and markup to see changes in real-time.

Why Download Aspose.OMR for .NET?

Aspose.OMR for .NET adds optical mark recognition (OMR) functionality to your C#, VB.NET, and ASP.NET applications. With it, you can design, render and recognize all types of hand-filled forms: answer sheets, examination papers, surveys, questionnaires, ballots, applications, and many more.

No specialized equipment, consumables and third-party software required. Use your office copier or even a smartphone camera instead of an expensive OMR scanner. Respondents can fill out your forms with a pen, pencil or marker and use any type of marks - artificial intelligence and advanced accuracy calibration ensure reliable results. You can even recognize rotated and skewed images.

Aspose.OMR for .NET can recognize any file you get from a scanner or camera: PDF, JPEG, PNG, TIFF, GIF, and BMP. Recognition results are returned in the most popular data storage formats (JSON, XML and CSV) that can be imported into any popular database, CRM or analysis system.

Aspose.OMR for .NET supports QR codes and barcodes recognition.

Aspose.OMR for .NET offers a flexible markup language for designing OMR forms of any layout and complexity; you can even add QR codes, barcodes and images without using third-party libraries. All popular paper sizes as well as a number of non-standard ones are supported. Forms are saved in multiple file formats, intelligently selected based on the provided extension: PDF, JPEG, PNG, TIFF, GIF, and BMP.

Aspose.OMR for .NET is written in C#, has managed code, and supports both x86 and x64 systems.

OMR API Features

• Recognition of scanned images and photos.
• Ability to process rotated and perspective (side viewed) images.
• Recognize data from tests, exams, questionnaires, surveys, etc.
• High accuracy rate & ability to export the results in CSV format.
• Create OMR templates.

What's new in v22.5.0

Return Image Recognition Results

The result of OMR image recognition can be received as following:

• CSV format as an array of bytes
• CSV format as memory stream (System.IO.MemoryStream) object
• JSON format as an array of bytes
• JSON format as memory stream (System.IO.MemoryStream) object
• XML format as an array of bytes
• XML format as memory stream (System.IO.MemoryStream) object

Load OMR Form Images from Memory

Images used in an OMR form can now be loaded not only from the file system, but also from memory through a special Aspose.OMR.Api.ImageCollection object.

OMR Element Rounded Borders

Added support for rounded OMR element borders.

Text markup

?container=
?block=
	border=square
?content=SQUARE
&block
?block=
	border=rounded
?content=ROUND
&block
&container

JSON Markup

{
	"element_type": "Template",
	"children": [
		{
			"element_type": "Page",
			"children": [
				{
					"element_type": "Container",
					"name": "Example",
					"children": [
						{
							"element_type": "Block",
							"border": "square",
							"children": [
								{
									"element_type": "Content",
									"name": "SQUARE"
								}
							]
						},
						{
							"element_type": "Block",
							"border": "rounded",
							"children": [
								{
									"element_type": "Content",
									"name": "ROUND"
								}
							]
						}
					]
				}
			]
		}
	]
}

Composite Grid Recognition

Only one bubble per row or column is allowed to be marked. The row or column selection depends on the the orientation of the element.

Improved Layout of ScoreGroup & CustomAnswerSheet

This release of API offers an improved layout of ScoreGroup and CustomAnswerSheet elements.

For better readability and presentation the ScoreGroup content is typically organized in a tabular format.

{
	"element_type": "ScoreGroup",
	"children": [
	/*** put one or more ScoreQuestion elements here */
	]
}

For a complete list of features, enhancements, and bug fixes in this release please visit, Aspose.OMR for .NET 22.5 Release Notes.

Read Images for OMR

JPEG, PNG, GIF, TIFF, BMP

Save OMR Results As

CSV, JSON, XML

Platform Independence

Aspose.OMR for .NET API is written in C# and can be used to build 32-bit and 64-bit applications targeting .NET Framework 4.0 and higher.

Get Started

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

Simply execute the below code snippet to see how Aspose.OMR API performs in your environment or please check the GitHub Repository for other common usage scenarios.

Perform OMR on a JPG Image & Get Results in the CSV format

// recognize image and receive result
RecognitionResult result = templateProcessor.RecognizeImage(dir + "template.jpg");
// export results as a CSV string
string csvResult = result.GetCsv();

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