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How to extract text from an image file

Kannaopat Udonpant
Kannapat Udonpant
September 3, 2024
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In this tutorial, we explore the process of extracting text from images using Iron OCR, a powerful library for C#. The session begins with setting up a C# console application in Visual Studio and installing the Iron OCR library via the NuGet Package Manager. Once the library is imported, an Iron Tesseract object is initialized, and its configuration options are fine-tuned to enable barcode reading and set the language to English. This setup allows for accurate text recognition and enhanced performance through multi-threading. Additional features include rendering PDFs and setting page segmentation mode to Auto OSD, which automatically segments and divides lines with words. The tutorial further explains how to use configuration variables for behavior fine-tuning, such as enabling parallelization for smooth execution and recognizing table layouts. Text inversion is disabled to improve results. The tutorial provides a link for more configuration options. Next, an image file is loaded using the OCR input object, and the Iron OCR is used to extract text from the image. The recognized text is output to the console, demonstrating the library's high accuracy. The tutorial concludes by highlighting Iron OCR as a powerful tool for extracting text from images and PDFs, encouraging viewers to try it with a provided trial link.

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Kannaopat Udonpant
Software Engineer
Before becoming a Software Engineer, Kannapat completed a Environmental Resources PhD from Hokkaido University in Japan. While pursuing his degree, Kannapat also became a member of the Vehicle Robotics Laboratory, which is part of the Department of Bioproduction Engineering. In 2022, he leveraged his C# skills to join Iron Software's engineering team, where he focuses on IronPDF. Kannapat values his job because he learns directly from the developer who writes most of the code used in IronPDF. In addition to peer learning, Kannapat enjoys the social aspect of working at Iron Software. When he's not writing code or documentation, Kannapat can usually be found gaming on his PS5 or rewatching The Last of Us.
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