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Aug 6th, 2022
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How to OCR Website Evaluation

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[Music] youre moving to a paperless office to save time and cash but youre faced with a huge pile of paper documents that need to be digitized with traditional scanning you can make these files digital but you cant edit or add to any of the text it wont save any time at all optical character recognition or OCR converts text from these documents or images of documents so that you can work with it digitally there are many OCR readers available but these are our top five programs to help convert your documents number one PDF element among the powerful tools available with PDF element its OCR functionality allows instant transformation of PDF files into editable searchable and selectable texts that can be used in a wide range of programs batch conversion will save time when working with multiple documents number two free OCR com this free online OCR tool is a simple web-based way to extract text from any image file type including PDF as a completely online tool there is no need to reg

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In this article, we will look at two metrics used to evaluate OCR output, namely Character Error Rate (CER) and Word Error Rate (WER).
The method was evaluated using Tesseract and compared to ABBYY FineReader and HANWANG OCR. The following results are presented for Tesseract: the original set of samples achieves a precision of 0.907 and 0.901 recall rate, while the preprocessed set leads to a precision of 0.929 and a recall of 0.928. Thompson et al.
Measuring OCR accuracy is done by taking the output of an OCR run for an image and comparing it to the original version of the same text. You can then either count how many characters were detected correctly (character level accuracy), or count how many words were recognized correctly (word level accuracy).
Modern OCR systems use intelligent character recognition (ICR) technology to read the text in the same way humans do. They use advanced methods that train machines to behave like humans by using machine learning software.
Metrics to measure OCR accuracy When it comes to OCR accuracy, two objective metrics are used to evaluate how reliable OCR is: Character Error Rate (CER) and Word Error Rate (WER).
Good OCR accuracy. = 98-99% accurate. (1-2% of OCR incorrect) Average OCR accuracy. = 90-98% accurate.
All you need is 99% OCR accuracy to get 90% accurate character recognition. Intelligent document processing provides built-in data validations, fuzzy matching, lexicons, and human data review to make quick work of the outlying 10% needed for 100% accurate data extraction.
Good OCR accuracy: CER 1-2% (i.e. 98-99% accurate) Average OCR accuracy: CER 2-10% Poor OCR accuracy: CER 10% (i.e. below 90% accurate)
An ImageProcessingTools object can be obtained by calling the CreateImageProcessingTools method from an Engine object. The CalcSuitableForOcr method returns a double value in the interval from 0.0 to 1.0 that indicates how suitable the image is for OCR, with 0.0 being the worst score and 1.0 the best.
Measuring OCR accuracy is done by taking the output of an OCR run for an image and comparing it to the original version of the same text. You can then either count how many characters were detected correctly (character level accuracy), or count how many words were recognized correctly (word level accuracy).

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