My laptop is running on Intel(R) Core(TM) i7–7500U CPU 2.70GHz with 16 GB RAM. All the abovementioned models will be assessed based on the following criteria: 1. Tesseract gives optimum result for texts with dark foreground and light background. Inverts the image (bitwise) if background is dark. Each text from the dataset is put through a pre-processing step, which does the following in sequence: 1. All three models will be used in this study. Tesseract 4.0.0 comes with three language models, namely: tessdata, tessdata_best, and tessdata_fast. The codes to generate the results can be found in my repo here. It is Friday night at the time of writing, so I am going to keep the discussion as succinct as I possibly can. These books combined has over 300 pages, and with augmentation, precisely 5145 pages. For this study, only Books 33 and 34 were used. It has about 30GB of data with character-level ground truth data, which is sweet! However, keep in mind that some of the books are in Russian. Luckily, I found one: DDI-100 dataset by the Machine Intelligence Team from Moscow Institute of Physics and Technology. I am aware of its robustness, however, out of curiosity, I wanted to investigate its performance on documents, specifically.Īs always, the starting point was sourcing for a reliable ground truth before thinking about synthesising one of my own. Recently, I was tasked to build an OCR tool for documents. Tesseract Optical Character Recognition (OCR) engine by Google is arguably the most popular out-of-the-box solution for OCR.
As OCR software, it uses the free OCR API from.
As a result Copyfish works with every website, even videos and PDF documents.įor developers: Copyfish is published under the GPL open-source license. Instead, it lets you mark the text in the image you want to extract. Copyfish solves the same problem, but it takes a different user interface approach.
Mark the area of the subtitle once and then use the "Do OCR" button to grab the latest text from the movie screen.įor extension gurus: You might have heard of Project Naptha, a great addon that applies state-of-the-art computer vision algorithms on every image you see while browsing the web. Especially for the subtitle translation use case, Copyfish has a repeat feature.
And if you want, Copyfish also translates the text for you. Text inside images, in tricky Javascript/AJAX or, especially, in movie subtitles on Youtube or Youku is unreachable for them. You can verify the results in one glance with the extracted text overlay.ĭo you need to switch between OCR languages often? You can define "Quick Switch" buttons for up to three languages on the settings page.įor language learners: There are many translator addons available, but they only work with plain website text. “Images” come in many forms: photographs, charts, diagrams, screenshots, PDF documents, comics, error messages, memes, Flash – and Youtube movies. Copyfish is soooo much faster and more fun.
Until now, your only option was to retype the text. Copyfish turns text within any image captured from your screen into an editable format without retyping – making it easy to reuse in digital documents, emails or reports.Ĭommon reasons to extract text from images are to google it, store it, email it or translate it. Do you need to extract text from images, videos or PDF? If yes, then the Copyfish Screenshot Reader is for you. Copy, paste and translate text from any image, video or PDF.