The font file may be in “.ocr” format or the older “.ocf” or “.ocm” formats.Īlthough ccOCFont::load() can load files in the older formats, trying to train the OCR Classifier tool using such a font (produced either manually or by a different Cognex tool such as the Image Font Extractor) and then running the OCR Classifier tool on images produced by the OCR Segmenter tool will generally give a worse OCR read rate (for example, percentage of correctly classified characters) than creating a font using the OCR Segmenter tool.Ĭopyright © 2019 | Cognex Corporation | All Rights Reserved.ĬVL Tools Vision Guide | 2019 October 02 | Revision: 9.0.0. The class provides the ccOCFont::load() and ccOCFont::save() functions to load and save the file using the file name as the sole argument. The ccOCFont class supports serialization to and from ccArchive. When using the font, type your numbers and letters with spaces in between. The font was designed with Remark Office OMR in mind, so it will work well with your forms.

Depending on the font or script used for the letter, the checksum of the resulting matrix is subsequently labeled (initially, by a person) as corresponding to the character in the image. and it’s quite difficult to make Tesseract’s training prediction more accurate, EXCEPT if your font is quite different and unique (like in our cases) or if you try to read some demonic language. The OCR Font class ( ccOCFont) is a container class for a font, representing a set of characters, including their character codes, images, and other metadata, primarily for use with OCR and OCV and also more generally to represent a font. Gravic has designed this font that will create encircled letters and numbers that can be used in virtually any Windows-based word processing application. Optical character recognition works by dividing up the image of a text character into sections and distinguishing between empty and non-empty regions. In this article, I want to share with you how to build a simple OCR using Tesseract, an optical character recognition engine for various.

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