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How is slant removal implemented in a character recognition system?

How is the preprocessing step of slant removal or normalization performed in a character recognition pipeline?

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By Adi Answered 1 year ago

Slant removal corrects italic-like skew. A common method is shear transformation: estimate the global slant angle by analyzing vertical stroke projections or using Hough transforms, then apply an affine shear transform to deskew the entire word or character image, normalizing it for more feature extraction and higher recognition accuracy.

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