Reading multilingual text from images

This guide demonstrates how to extract text from an image that contains multiple languages.

Use this workflow when you need to:

• Process mixed-language documents in one OCR pass
• Extract multilingual text for search, translation, or storage
• Reduce language-specific OCR branching in your pipeline

Project setup

Install:

• The core Nutrient Native SDK package
• GdPicture.Resources for OCR language resources

Prepare the project

Register the SDK license before running OCR operations. For setup details, refer to the getting started with .NET SDK guide.

using GdPicture14;

LicenseManager licence = new LicenseManager();
licence.RegisterKEY(""); // Set your license key

Create OCR components

Create imaging and OCR instances:

using GdPictureImaging imaging = new GdPictureImaging();
using GdPictureOCR ocr = new GdPictureOCR();

Load the image and configure languages

Load the source image, set it on the OCR engine, and add the target languages:

int imageId = imaging.CreateGdPictureImageFromFile(@"input_ocr_multiple_languages.png");

ocr.SetImage(imageId);

ocr.AddLanguage(OCRLanguage.English);
ocr.AddLanguage(OCRLanguage.French);

Run OCR and save output

Execute OCR, read extracted text, and write it to a file:

string ocrResultId = ocr.RunOCR(OCRSpecialContext.None);

string result = ocr.GetOCRResultText(ocrResultId);

File.WriteAllText(@"output.txt", result);

Conclusion

This workflow extracts multilingual text from an image and writes the OCR result to a text file.