Optical character correction of large-curvature annular sector text in polar coordinate system

Pattern Recognition Letters(2023)

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摘要
•Proposed a optical character correction method for large-curvature annular sector text.•Introduced polar coordinate transformation and image remapping to reconstruct text images.•Proposed a preprocessing method to improve text control point quality.•Distinguished the concavity and convexity of annular sector text.
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关键词
Optical character correction,Large curvature,Annular sector text,Polar coordinate transformation,OCR
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