Aspose.OCR 2.4.0

Aspose.OCR for .NET is a character and optical mark recognition component built to allow developers to add OCR and OMR functionality in their ASP.NET web applications, web services and Windows applications. It provides a simple set of classes for controlling character and optical mark recognition

There is a newer version of this package available.
See the version list below for details.
Install-Package Aspose.OCR -Version 2.4.0
dotnet add package Aspose.OCR --version 2.4.0
<PackageReference Include="Aspose.OCR" Version="2.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Aspose.OCR --version 2.4.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Aspose.OCR, 2.4.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Aspose.OCR as a Cake Addin
#addin nuget:?package=Aspose.OCR&version=2.4.0

// Install Aspose.OCR as a Cake Tool
#tool nuget:?package=Aspose.OCR&version=2.4.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

Improvements and Changes
Enhancements

OCR-33977 IRecognitionBlock.RecognitionData always returns Null
OCR-33962 Merge OMR functionality into Aspose.OCR assembly
OCR-33546 Support Ctrl+A hotkey

Exceptions

OCR-33944 System.IndexOutOfRangeException at OmrEngine.ExtractData
OCR-33963 ArgumentException: IComparer (or the IComparable methods it relies upon) did not return zero when Array.Sort called x. CompareTo(x). x... at OcrEngine.Process
OCR-33659 Provide a meaningful exception message when OCR element dimensions are out of image bounds

Public API and Backwards Incompatible Changes

The following is a list of any changes made to the public API such as added, renamed, removed or deprecated members as well as any non-backward compatible change made to Aspose.OCR for .NET. If you have concerns about any change listed, please raise it on the Aspose.OCR support forum.

Added APIs:
Class Aspose.OMR.Elements.BarcodeElement
Class Aspose.OMR.Elements.BasicElement
Class Aspose.OMR.Elements.ChoiceBoxElement
Class Aspose.OMR.Elements.CustomImageProcessingAttribute
Class Aspose.OMR.Elements.GridElement
Class Aspose.OMR.Elements.GridSection
Class Aspose.OMR.Elements.ISpacedArea
Class Aspose.OMR.Elements.OmrCell
Class Aspose.OMR.Elements.OmrElement
Class Aspose.OMR.Elements.TextOcrElement
Class Aspose.OMR.ImageProcessing.AverageThresholdAlgorithm
Class Aspose.OMR.ImageProcessing.GrayscaleAlgorithm
Class Aspose.OMR.ImageProcessing.IProcessingAlgorithm
Class Aspose.OMR.ImageProcessing.OtsuBinarizationAlgorithm
Class Aspose.OMR.ImageProcessing.ProcessingPipeline
Class Aspose.OMR.OmrConfig
Class Aspose.OMR.OmrElementsCollection
Class Aspose.OMR.OmrEngine
Class Aspose.OMR.OmrImage
Class Aspose.OMR.OmrPage
Class Aspose.OMR.OmrPagesCollection
Class Aspose.OMR.OmrProcessingResult
Class Aspose.OMR.OmrTemplate
Field/Enum Aspose.OMR.OmrImage.BufferPixelFormat
Field/Enum Aspose.OMR.OmrImage.BytesPerPixel
Method Aspose.OMR.Elements.BarcodeElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.BarcodeElement.ExtractData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.Elements.BasicElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.BasicElement.ExtractData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.Elements.BasicElement.LoadProperties(System.Collections.Specialized.StringDictionary)
Method Aspose.OMR.Elements.BasicElement.SaveProperties
Method Aspose.OMR.Elements.ChoiceBoxElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.ChoiceBoxElement.ExtractData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.Elements.ChoiceBoxElement.LoadProperties(System.Collections.Specialized.StringDictionary)
Method Aspose.OMR.Elements.ChoiceBoxElement.SaveProperties
Method Aspose.OMR.Elements.CustomImageProcessingAttribute.#ctor
Method Aspose.OMR.Elements.GridElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.GridElement.ExtractData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.Elements.GridElement.SetSectionsCount(System.Int32)
Method Aspose.OMR.Elements.GridSection.#ctor
Method Aspose.OMR.Elements.OmrCell.#ctor
Method Aspose.OMR.Elements.OmrCell.#ctor(System.String)
Method Aspose.OMR.Elements.OmrElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.OmrElement.LoadProperties(System.Collections.Specialized.StringDictionary)
Method Aspose.OMR.Elements.OmrElement.SaveProperties
Method Aspose.OMR.Elements.TextOcrElement.#ctor(System.String,System.Drawing.PointF,System.Drawing.SizeF)
Method Aspose.OMR.Elements.TextOcrElement.ExtractData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.ImageProcessing.AverageThresholdAlgorithm.#ctor
Method Aspose.OMR.ImageProcessing.AverageThresholdAlgorithm.Process(Aspose.OMR.OmrImage,System.Drawing.Rectangle)
Method Aspose.OMR.ImageProcessing.GrayscaleAlgorithm.#ctor
Method Aspose.OMR.ImageProcessing.GrayscaleAlgorithm.Process(Aspose.OMR.OmrImage,System.Drawing.Rectangle)
Method Aspose.OMR.ImageProcessing.IProcessingAlgorithm.Process(Aspose.OMR.OmrImage,System.Drawing.Rectangle)
Method Aspose.OMR.ImageProcessing.OtsuBinarizationAlgorithm.#ctor
Method Aspose.OMR.ImageProcessing.OtsuBinarizationAlgorithm.Process(Aspose.OMR.OmrImage,System.Drawing.Rectangle)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.#ctor
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.#ctor(System.Collections.ICollection)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.Add(Aspose.OMR.ImageProcessing.IProcessingAlgorithm)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.Contains(Aspose.OMR.ImageProcessing.IProcessingAlgorithm)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.CopyTo(Aspose.OMR.ImageProcessing.IProcessingAlgorithm[],System.Int32)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.IndexOf(Aspose.OMR.ImageProcessing.IProcessingAlgorithm)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.Insert(System.Int32,Aspose.OMR.ImageProcessing.IProcessingAlgorithm)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.OnValidate(System.Object)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.Process(Aspose.OMR.OmrImage,System.Drawing.Rectangle)
Method Aspose.OMR.ImageProcessing.ProcessingPipeline.Remove(Aspose.OMR.ImageProcessing.IProcessingAlgorithm)
Method Aspose.OMR.OmrConfig.#ctor
Method Aspose.OMR.OmrElementsCollection.#ctor
Method Aspose.OMR.OmrElementsCollection.#ctor(System.Collections.ICollection)
Method Aspose.OMR.OmrElementsCollection.Add(Aspose.OMR.Elements.BasicElement)
Method Aspose.OMR.OmrElementsCollection.Contains(Aspose.OMR.Elements.BasicElement)
Method Aspose.OMR.OmrElementsCollection.CopyTo(Aspose.OMR.Elements.BasicElement[],System.Int32)
Method Aspose.OMR.OmrElementsCollection.IndexOf(Aspose.OMR.Elements.BasicElement)
Method Aspose.OMR.OmrElementsCollection.Insert(System.Int32,Aspose.OMR.Elements.BasicElement)
Method Aspose.OMR.OmrElementsCollection.OnValidate(System.Object)
Method Aspose.OMR.OmrElementsCollection.Remove(Aspose.OMR.Elements.BasicElement)
Method Aspose.OMR.OmrEngine.#ctor(Aspose.OMR.OmrTemplate)
Method Aspose.OMR.OmrEngine.#ctor(Aspose.OMR.OmrTemplate,Aspose.OMR.ImageProcessing.ProcessingPipeline)
Method Aspose.OMR.OmrEngine.ChangeProcessingPipeline(Aspose.OMR.ImageProcessing.ProcessingPipeline)
Method Aspose.OMR.OmrEngine.ExtractData(Aspose.OMR.OmrImage[])
Method Aspose.OMR.OmrImage.#ctor(System.Int32,System.Int32,System.Double,System.Byte[])
Method Aspose.OMR.OmrImage.AsBitmap
Method Aspose.OMR.OmrImage.Copy
Method Aspose.OMR.OmrImage.Load(System.IO.Stream)
Method Aspose.OMR.OmrImage.Load(System.String)
Method Aspose.OMR.OmrPage.#ctor
Method Aspose.OMR.OmrPage.ExtactData(Aspose.OMR.OmrImage,Aspose.OMR.OmrConfig)
Method Aspose.OMR.OmrPagesCollection.#ctor
Method Aspose.OMR.OmrPagesCollection.#ctor(System.Collections.ICollection)
Method Aspose.OMR.OmrPagesCollection.Add(Aspose.OMR.OmrPage)
Method Aspose.OMR.OmrPagesCollection.Contains(Aspose.OMR.OmrPage)
Method Aspose.OMR.OmrPagesCollection.CopyTo(Aspose.OMR.OmrPage[],System.Int32)
Method Aspose.OMR.OmrPagesCollection.IndexOf(Aspose.OMR.OmrPage)
Method Aspose.OMR.OmrPagesCollection.Insert(System.Int32,Aspose.OMR.OmrPage)
Method Aspose.OMR.OmrPagesCollection.OnValidate(System.Object)
Method Aspose.OMR.OmrPagesCollection.Remove(Aspose.OMR.OmrPage)
Method Aspose.OMR.OmrProcessingResult.#ctor(System.Collections.Hashtable[])
Method Aspose.OMR.OmrTemplate.#ctor
Method Aspose.OMR.OmrTemplate.Load(System.IO.Stream)
Method Aspose.OMR.OmrTemplate.Load(System.String)
Method Aspose.OMR.OmrTemplate.Save(System.IO.Stream)
Method Aspose.OMR.OmrTemplate.Save(System.String)
Property Aspose.OMR.Elements.BasicElement.Name
Property Aspose.OMR.Elements.BasicElement.Position
Property Aspose.OMR.Elements.BasicElement.Size
Property Aspose.OMR.Elements.ChoiceBoxElement.MultipleSelectionAllowed
Property Aspose.OMR.Elements.GridElement.Sections
Property Aspose.OMR.Elements.GridSection.SpaceAfter
Property Aspose.OMR.Elements.GridSection.SpaceBefore
Property Aspose.OMR.Elements.ISpacedArea.SpaceAfter
Property Aspose.OMR.Elements.ISpacedArea.SpaceBefore
Property Aspose.OMR.Elements.OmrCell.SpaceAfter
Property Aspose.OMR.Elements.OmrCell.SpaceBefore
Property Aspose.OMR.Elements.OmrCell.Value
Property Aspose.OMR.Elements.OmrElement.Cells
Property Aspose.OMR.Elements.OmrElement.Configuration
Property Aspose.OMR.Elements.OmrElement.IsHorizontal
Property Aspose.OMR.Elements.TextOcrElement.Resource
Property Aspose.OMR.ImageProcessing.ProcessingPipeline.Default
Property Aspose.OMR.ImageProcessing.ProcessingPipeline.Item(System.Int32)
Property Aspose.OMR.OmrConfig.FillThreshold
Property Aspose.OMR.OmrConfig.TrimWhitePixels
Property Aspose.OMR.OmrElementsCollection.Item(System.Int32)
Property Aspose.OMR.OmrEngine.Configuration
Property Aspose.OMR.OmrEngine.ProcessingPipeline
Property Aspose.OMR.OmrEngine.Template
Property Aspose.OMR.OmrImage.Buffer
Property Aspose.OMR.OmrImage.Height
Property Aspose.OMR.OmrImage.Resolution
Property Aspose.OMR.OmrImage.Width
Property Aspose.OMR.OmrPage.Configuration
Property Aspose.OMR.OmrPage.Elements
Property Aspose.OMR.OmrPage.Height
Property Aspose.OMR.OmrPage.SheetImage
Property Aspose.OMR.OmrPage.Width
Property Aspose.OMR.OmrPagesCollection.Item(System.Int32)
Property Aspose.OMR.OmrProcessingResult.PageData
Property Aspose.OMR.OmrTemplate.Pages

Dependencies

This package has no dependencies.

NuGet packages (4)

Showing the top 4 NuGet packages that depend on Aspose.OCR:

Package Downloads
Aspose.Total
Aspose.Total for .NET is the most complete package of all .NET file format APIs offered by Aspose. It empowers developers to create, edit, render, print and convert between a wide range of popular document formats within any .NET, C#, ASP.NET and VB.NET applications.
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This contains all the document conversions functionality e.g word to pdf, exce to pdf etc
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Conholdate.Total
Conholdate.Total for .NET is a complete package to work with a large number of file formats from Microsoft Word, Excel, PowerPoint, Outlook, Project, Visio, Adobe Acrobat, Illustrator, Photoshop, AutoCAD, OpenOffice and many more. Conholdate.Total for .NET allows you to use any API released under Aspose and GroupDocs for .NET in order to create, convert, read, edit, update and print popular document formats. Moreover, you may view, annotate, watermark, assemble, classify, search, redact, parse, merge and compare documents without needing to install the native applications. It helps you in file format manipulation and document automation via simple API. Conholdate.Total for .NET also includes specialized APIs to read and create barcodes, extract text from images using OCR as well as extract human marked data from questioners, surveys, quizzes, MCQ papers and feedback forms.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version History

Version Downloads Last updated
21.4.0 160 4/29/2021
21.3.0 775 3/29/2021
21.2.0 1,543 2/25/2021
21.1.2 464 2/2/2021
20.12.1 181 2/2/2021
20.11.0 7,789 11/26/2020
20.10.0 1,301 10/27/2020
20.9.0 2,708 9/25/2020
20.8.0 5,891 8/27/2020
20.7.0 1,629 8/5/2020
20.6.1 259 8/5/2020
20.4.3 310 8/6/2020
19.9.3 2,504 2/5/2020
19.9.2 343 2/5/2020
19.9.1 3,375 11/20/2019
19.9.0 4,391 10/2/2019
19.8.1 1,710 9/2/2019
19.8.0 871 8/28/2019
17.11.0 10,963 11/15/2017
17.6.0 5,717 6/22/2017
17.3.0 2,170 3/17/2017
17.2.0 1,110 2/16/2017
17.1.0 1,858 1/14/2017
16.12.0 1,642 12/17/2016
16.11.0 1,108 11/11/2016
16.10.0 2,440 10/10/2016
3.7.0 1,053 9/2/2016
3.6.0 3,953 6/15/2016
3.5.0 1,610 4/12/2016
3.4.0 1,336 3/2/2016
3.3.0 1,843 2/1/2016
3.2.0 981 12/30/2015
3.1.0 1,444 11/23/2015
3.0.0 2,986 10/15/2015
2.9.0 1,241 9/7/2015
2.8.0 15,454 8/5/2015
2.7.0 4,554 6/26/2015
2.6.0 1,102 5/30/2015
2.5.0 1,114 4/30/2015
2.4.0 1,048 3/30/2015
2.3.0 1,426 2/26/2015
2.2.0 1,388 12/31/2014
2.1.0 1,503 10/21/2014
2.0.0 1,956 6/23/2014
1.9.0 1,427 4/3/2014
1.8.0 1,788 11/20/2013
1.6.0 3,191 7/22/2013
1.5.0 1,433 4/4/2013
1.4.0 1,208 12/27/2012
1.3.0 1,201 11/14/2012
1.2.0 1,204 10/19/2012
1.1.0.1 1,520 2/16/2012
1.1.0 1,271 1/24/2012
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