Convert Image to Text using C++ OCR Library

Perform OCR using C++

The OCR (Optical Character Recognition) technology lets you read and convert the text in the images or scanned documents to the machine-readable form. The OCR has various use cases that include reading codes from vouchers, making the text editable, self-service stores, converting printed documents into digital formats, and so on. Various OCR tools and libraries are available in the market, however, the reliability of the OCR results is a key factor. In this article, I’ll show you how to create your own OCR application and convert images to text programmatically using C++.

C++ OCR Library to Convert Image to Text

Aspose offers a powerful C++ OCR library that uses deep learning to provide you more reliable and near to accurate OCR results. You can download the library files as well as a sample project from GitHub.

Convert Image Page to Text using C++

Lets first check out the scenario in which the image contains a multi-line text. This could be the case when you have a scanned book where each page of the book contains a bunch of text lines. The following are the steps to convert image to text in this case.

The following code sample shows how to perform OCR and convert image to text using C++.

Perform OCR for an Image with Single Line using C++

In the previous example, we have converted an image having multiple text lines. However, there could be the case when the image contains only a single line of text such as the caption or a slogan. The following are the steps to perform OCR in such cases.

The following code sample shows how to perform OCR on an image with a single line of text using C++.

Convert a Particular Area of Image to Text in C++

You can also customize the API to limit the area of the image where you want to perform the OCR. In this case, you can create a rectangle on the image to access the desired area. The following are the steps to extract text from a particular area of the image.

The following code sample shows how to convert a particular area of the image to text using C++.

Conclusion

In this article, you have learned how to use Aspose’ OCR library to convert images to text in C++. We have seen how to perform OCR on an image with single or multiple lines of text as well as read text from a particular area of an image. You can learn more about Aspose.OCR for C++ using the documentation.

See Also