This method works well with scanned images of documents that have been typed in a known font. Pattern recognition works only if the stored glyph has a similar font and scale to the input glyph. Pattern matching works by isolating a character image, called a glyph, and comparing it with a similarly stored glyph. The two main types of OCR algorithms or software processes that an OCR software uses for text recognition are called pattern matching and feature extraction. Script recognition for multi-language OCR technology.Cleaning up boxes and lines in the image.Despeckling or removing any digital image spots or smoothing the edges of text images.Deskewing or tilting the scanned document slightly to fix alignment issues during the scan.These are some of its cleaning techniques: The OCR software first cleans the image and removes errors to prepare it for reading. The OCR software analyzes the scanned image and classifies the light areas as background and the dark areas as text. The OCR engine or OCR software works by using the following steps: Image acquisitionĪ scanner reads documents and converts them to binary data.
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