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Aspose.OCR for .NET 23.6.0 - Release Notes

This article contains a summary of recent changes, enhancements and bug fixes in Aspose.OCR for .NET 23.6.0 (June 2023) release.

GPU version: 23.5.0

Deprecation warning

The release 23.3.1 introduced a slimmer, faster and more straightforward API. All of your existing code will continue to work and you can even make minor updates to it, but be aware that all deprecated elements are scheduled to be removed in release 23.11.0 (November 2023) in favor of the new API.

Time to deprecation: 4 months left.

What was changed

Key	Summary	Category
OCRNET‑679	Added the ability to save recognition results to searchable PDF files without keeping an original image in the background.	New feature
OCRNET‑680	Added detailed tracking of image processing and recognition progress.	Enhancement
OCRNET‑669	Revised the API licensing mechanism to support per-method licensing.	Enhancement

Public API changes and backwards compatibility

This section lists all public API changes introduced in Aspose.OCR for .NET 23.6.0 that may affect the code of existing applications.

Added public APIs:

The following public APIs have been introduced in this release:

`Aspose.OCR.SaveFormat.PdfNoImg`

When saving recognition results with this option, a textual PDF document is created, but the original images are not placed in the background. This can be useful when digitizing large amounts of high-quality text (such as books) so that the resulting file takes up much less space than using the Aspose.OCR.SaveFormat.Pdf parameter.

Updated public APIs:

The following public APIs have been introduced in this release:

`Aspose.OCR.AsposeOcr.OcrProgress` method

Compatibility: fully backward compatible.

Progress tracking can be used not only to monitor bulk recognition of multiple images, but to also track the detailed progress of processing and recognizing a single image.

Removed public APIs:

No changes.

Examples

The examples below illustrates the changes introduced in this release:

Saving searchable PDF without background images

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("page1.png");
input.Add("page2.png");
// Recognize image
List<Aspose.OCR.RecognitionResult> results = recognitionEngine.Recognize(input);
// Save results
Aspose.OCR.AsposeOcr.SaveMultipageDocument("result.pdf", Aspose.OCR.SaveFormat.PdfNoImg, results);

Tracking image recognition progress

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("page1.png");
// Event handler
recognitionEngine.OcrProgress += (Aspose.OCR.Models.Events.OcrPageRecognizeEventsArgs e) => {
	Console.WriteLine(e.FileName + " Page " + e.CurrentPage + " image " + e.CurrentImage + " " + e.Duration.TotalSeconds + "s " + e.OperationName);
};
// Recognize images
List<Aspose.OCR.RecognitionResult> results = recognitionEngine.Recognize(input);
Aspose.OCR.AsposeOcr.SaveMultipageDocument("result.json", Aspose.OCR.SaveFormat.Json, results);