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Aspose.OCR can automatically build a list of characters found in an image and provide less likely alternatives of each character (in descending order of probability). To get the list of characters, use asposeocr_page_characters_choices()
or asposeocr_page_characters_choices_from_raw_bytes()
functions.
The list of unique characters can later be used for identifying a whitelist to greatly improve the accuracy and performance of recognition.
Alternatives can be used to find out patterns in common recognition errors, such as misidentifying certain characters in a font used in an image, and to take corrective action, such as automatic substitution.
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