Browse our Products
Aspose.OCR for .NET 23.12.1 - Release Notes
This article contains a summary of recent changes, enhancements and bug fixes in Aspose.OCR for .NET 23.12.1 (December 2023) release.
GPU version: 23.10.1
What was changed
Key | Summary | Category |
---|---|---|
OCRNET‑769 | Added recognition of handwritten text and introduced Aspose.OCR.Models.Handwritten recognition model. | New feature |
OCRNET‑770 | Implemented the retrieval of essential data from passports issued in Madagascar. | New feature |
Public API changes and backwards compatibility
This section lists all public API changes introduced in Aspose.OCR for .NET 23.12.1 that may affect the code of existing applications.
Added public APIs:
The following public APIs have been introduced in Aspose.OCR for .NET 23.12.1 release:
RecognizeHandwrittenText()
method
A specialized recognition method for extracting handwritten text from images. It supports a number of European languages based on Extended Lain alphabet.
RecognizeHandwrittenText()
method has some limitations:
- The method only supports a limited subset of Extended Latin letters and numbers.
- Both uppercase and lowercase letters are recognized. However, the resulting text will be in uppercase.
- This method does not support recognition settings. The recognition language is detected automatically.
GetKeywords()
method
Extracts essential information from a passport image, like date of birth, names, and more. The specific details extracted depend on the passport’s origin, which is specified in the Country
parameter of the passport recognition settings. The information is returned as a dictionary with key-value pairs that are specific to each country.
This method only applies to passport recognition results. Calling it on results obtained from any other recognition method will return an empty dictionary.
Updated public APIs:
The following public APIs have been changed in Aspose.OCR for .NET 23.12.1 release:
RecognizePassport()
method
Compatibility: partial backward compatibility.
Continuing to use this method will require making certain changes to your project. Read the details below.
To use this method, install the Text-in-wild recognition model in your project. If this model is not present, an exception will be thrown.
Removed public APIs:
No changes
Examples
The code samples below illustrate the changes introduced in this release:
Extract key details from Malagasy passport
Aspose.OCR.AsposeOcr recognitionEngine = new Aspose.OCR.AsposeOcr();
// Add scanned passport to recognition batch
OcrInput passports = new OcrInput(InputType.SingleImage);
passports.Add("malagasy_passport_sample.png");
// Explicitly specify that you are processing Malagasy passport
var recognitionSettings = new PassportRecognitionSettings();
recognitionSettings.Country = Aspose.OCR.Country.MADAGASCAR;
// Recognize passport
List<Aspose.OCR.RecognitionResult> results = recognitionEngine.RecognizePassport(passports, recognitionSettings);
// Parse passport data and output essential details along with image regions they were found in
var details = results[0].GetKeywords();
foreach (var item in details)
{
Console.WriteLine($"{item.Key}: {item.Value.TextInLine}");
Console.WriteLine($"Left: {item.Value.Line.X}; top: {item.Value.Line.Y}; size: {item.Value.Line.Width} x {item.Value.Line.Height}");
}
Recognize handwritten memos
Aspose.OCR.AsposeOcr recognitionEngine = new Aspose.OCR.AsposeOcr();
// Add images to OcrInput object
Aspose.OCR.OcrInput input = new Aspose.OCR.OcrInput(Aspose.OCR.InputType.SingleImage);
input.Add("memo1.png");
input.Add("memo2.png");
// Recognize images
List<Aspose.OCR.RecognitionResult> results = recognitionEngine.RecognizeHandwrittenText(input);
foreach(Aspose.OCR.RecognitionResult result in results)
{
Console.WriteLine(result.RecognitionText);
}