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Angelina Dataset (see "links" section) consists of 240 labeled images with Braille text, divided into a train set (212 pictures) and validation set (28 pictures). Braille text is written in a 6-dot code, each letter is formed by 1 to 6 raized dots located in a 2*3 cell. An image may contain recto as well as verso dots; only recto dots should be detected.
| Double-sided Braille book | Single-sided Braille writing |
|---|---|
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The primary goal is to build a detector that recognizes Braille characters on validation images with high accuracy (in accordance with the IoU loss), presumably using the training dataset.
The next goal, which I will aim only if I succeed in the first one, is to add more images to the Angelina Dataset which contain Braille characters not only from books and Braille paper sheets, but also those from Braille plates and other devices such as Braille Contraction cards used by students.
- Angelina Braille Reader, the state-of-the-art Braille OCR system | GitHub
- Angelina Dataset | GitHub
- DataSet of Braille Images mod. Ilya Ovodov | GitHub
- Elena Fomina's Flutter cross-platform Braille OCR app | git.asi.ru
- Braille data collection | git.asi.ru
- Braille OCR system | GitHub
- Braille Character Dataset | Kaggle
- Braille Classifier (Keras) | Kaggle
- Optical Braille recognition | Wikipedia
- Optical Braille Recognition Using Object Detection CNN | Ilya G. Ovodov | ArXiV, 2020
- Smart OCR for Visually Challenged People| Devarsh Bhupatkar et al | SemanticScholar, 2019
- DSBI: Double-Sided Braille Image Dataset and Algorithm Evaluation for Braille Dots Detection | Renqiang Li et al | ArXiV, 2018
- A Novel and Efficient Algorithm to Recognize Any Universally Accepted Braille Characters: A Case with Kannada Language| C.N. Ravi Kumar | IEEEXplore, 2014
- Software algorithm prototype tor optical recognition of embossed Braille| L. Wong et al | ResearchGate, 2004
- A BRAILLE O.C.R. FOR BLIND PEOPLE | X. F. Hermida et al | SemanticScholar, 2003
- A Braille O.C.R. for Blind People | X. F. Hermida et al | ResearchGate, 1996