Binarization of Badly Illuminated Document Images through Shading Estimation and Compensation

@article{Lu2007BinarizationOB,
  title={Binarization of Badly Illuminated Document Images through Shading Estimation and Compensation},
  author={S. J. Lu and Chew Lim Tan},
  journal={Ninth International Conference on Document Analysis and Recognition (ICDAR 2007)},
  year={2007},
  volume={1},
  pages={312-316}
}
This paper presents a document image binarization technique that segments text from badly illuminated document images. Based on the observations that text documents normally lie over a planar or smoothly curved surface and have a uniformly colored background, badly illuminated document images are binarized by using a smoothing polynomial surface, which estimates the shading variation and compensates the shading degradation based on the estimated shading variation. Badly illuminated document… CONTINUE READING
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