ocr

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  Build Tesseract 5 in Conda Environment

  Here’s a short guide to building Tesseract 5 from source (master branch on GitHub). I’m writing this mainly because conda offers as packages only versions of Tesseract up to 4.1.1 – at least at this moment. The other reason is...

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  PyTorch CRNN: Seq2Seq Digits Recognition w/ CTC

  This article discusses handwritten character recognition (OCR) in images using sequence-to-sequence (seq2seq) mapping performed by a Convolutional Recurrent Neural Network (CRNN) trained with Connectionist Temporal Classification (CTC) loss. The aforementioned approach is employed in multiple modern OCR engines for handwritten...

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  Improving Tesseract 4's OCR Accuracy through Image Preprocessing

  In this work I took a look at Tesseract 4’s performance at recognizing characters from a challenging dataset and proposed a minimalistic convolution-based approach for input image preprocessing that can boost the character-level accuracy from 13.4% to 61.6% (+359% relative...

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  Evaluating the Robustness of OCR Systems

  In this article, I’m going to discuss about my Bachelor’s degree final project, which is about evaluating the robustness of OCR systems (such as Tesseract or Google’s Cloud Vision) when adversarial samples are presented as inputs. It’s somewhere in-between fuzzing...

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  C# Naive Bayes Basic OCR (w/ Example)

  Hello again; I’m back - once again sacrificing my time for homework so I can publish something that I find more interesting. So if anyone is still reading this: the whole article is about OCR (which stands for Optical Character...

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