Release Notes - DynamsoftLabelRecognizer Module

3.4.10 (07/23/2024)

New

• Added a new parameter CharSet to the CharacterModel object to include or exclude characters for recognition.
• Added a new algorithm stage IRUT_RAW_TEXT_LINES. Corresponding APIs are added to obtain the intermediate result of this stage.
  • Class CRawTextLinesUnit
  • Class CRawTextLine
  • Enumeration RawTextLineStatus
• Added the following intermediate result altering functions to the class CRecognizedTextLinesUnit.
  • Added function RemoveRecognizedTextLine
  • Added function AddRecognizedTextLine
  • Added function SetRecognizedTextLine(index,element,matrixToOriginalImage)
• Added a new function CreateRawTextLine to the class CLabelRecognizerModule.
• Added a new function GetRawText to the class CRecognizedTextLineELement.
• Added a new function GetRawText to the class CTextLineResultItem.
• Added a new function AddItem to the class CRecognizedTextLinesResult.
• Added a new function SetLocation to the class CTextLineResultItem.

Deprecated

• Deprecated function SetRecognizedTextLine(element,matrixToOriginalImage) of the class CRecognizedTextLinesUnit.

3.2.30 (05/13/2024)

Fixed

• Fixed a bug where users would not receive proper error messages when attempting to configure SimplifiedLabelRecognizerSettings with an incorrect CharacterModel.
• Fixed a bug where the characters might not be correctly excluded when they are configured in the filter file.

3.2.20 (04/07/2024)

Improved

• Improved the speed of TextLineGroup detection by optimizing internal logic.

New

• Added new LabelRecognizerTaskSettings parameters.
  • Added ConfusableCharactersPath to define the path of the resource files that store the confusable characters’ information.
  • Added ClusterSamplesCountThreshold to specify the lowest required sample count for clustering.
• Added new TextLineSpecification parameters.
  • Added ConfusableCharactersCorrection to define which confusable characters you are going to distinguish. You can also specify the font type of the characters.
  • Added ExpectedGroupCount to define the count of TextLineGroups that might exist on the image.
• Added new classes for the character buffer feature:
  • CBufferedCharacterItemSet: The class that stores a collection of buffered character items and cluster information.
  • CBufferedCharacterItem: The class that stores a basic item of the buffered characters with its image and features information.
  • CCharacterCluster: The class that stores a character cluster generated from the collected buffered character items.
• Added method GetSpecificationName to the CTextLineResultItem class to get the name of the TextLineSpecificationobject that generated this CTextLineResultItem.
• Added method GetSpecificationName to the CRecognizedTextLineElement class to get the name of the TextLineSpecificationobject that generated this CRecognizedTextLineElement.

3.2.10 (03/01/2024)

Improved

• Security update for DynamsoftLabelRecognizer library.
• Supported the filter configuration of the characters that are not recognized by the Deep Neural Network via the Filter.txt file.

Fixed

• Fixed a bug where multiple results were output from the same text area.

3.2.0 (01/16/2024)

New

• Added new methods to the CLocalizedTextLinesUnit class to add, set or remove the localized text line elements.
• Added new methods to the CRecognizedTextLinesUnit class to add, set or remove the recognized text line elements.
• Added the following methods to the CRecognizedTextLineElement class
  • A new constructor (the old one is removed)
  • SetText
• Added a new constructor to the CTextLineResultItem class to replace the previous one.
• Added the following methods to the CrecognizedTextLinesResult class.
  • operator[]
  • Retain
  • Release
• Added the following methods to the CLabelRecognizerModule class to create the corresponding elements.
  • CreateRecognizedTextLineElement
  • CreateLocalizedTextLineElement
• Add C interfaces and implementations, which are only used to encapsulate upper-level languages such as c# and python, etc.

Break Changes

• The destructor functions of the following classes are changed to protected:
  • CLocalizedTextLineElement
  • CLocalizedTextLinesUnit
  • CRecognizedTextLineElement
  • CRecognizedTextLinesUnit
  • CRecognizedTextLinesResult
• Change the compiler option of the runtime library of Windows DLLs from MD to MT.

3.0.30 (02/01/2024)

New

• Added internal logic to obtain resources based on the specified template.

3.0.20 (10/26/2023)

New

• Added the support of the following preset templates:
  • PT_RECOGNIZE_NUMBERS
  • PT_RECOGNIZE_LETTERS
  • PT_RECOGNIZE_NUMBERS_AND_LETTERS
  • PT_RECOGNIZE_NUMBERS_AND_UPPERCASE_LETTERS
  • PT_RECOGNIZE_UPPERCASE_LETTERS
• Added a new parameter scaleDownThreshold to the struct SimplifiedLabelRecognizerSettings.

Fixed

• Small fixes and tweaks.

3.0.10 (08/08/2024)

• Renamed the method GetSourceImageHashId of CRecognizedTextLinesResult class to GetOriginalImageHashId.
• Renamed the method GetSourceImageTag of CRecognizedTextLinesResult class to GetOriginalImageTag.
• Renamed the method GetCount of CRecognizedTextLinesResult class to GetItemsCount.

3.0.0 (07/04/2023)

The first version of DynamsoftLabelRecognizer (DLR) CPP edition that integrate with DynamsoftCaptureVision (DCV) architecture.