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Learn OpenCV 4 by Building Projects - Second Edition by Prateek Joshi, Vinicius G. Mendonca, David Millan Escriva

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Preprocessing stage

Software that identifies letters does so by comparing text with previously recorded data. Classification results can be improved greatly if the input text is clear, if the letters are in a vertical position, and if there's no other elements, such as images sent to the classification software. In this section, we'll learn how to adjust text by using preprocessing.

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