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- W108442078 abstract "This paper presents variational and partial differential equation(PDE)-based enhancement of degraded document images. The stain and uneven illumination degradation is mitigated via augmented Homomorphic L1 Total Variation estimation. Furthermore, a fourth order forward-backward Diffusion-Laplacian contrast enhancement PDE is used to restore faint text intensity and edges. Additionally, pre-smoothing is used for document images with extensive bleed-through effects with strong edges. Comparisons with existing approaches show improved/superior binarization results based on subjective and objective analysis" @default.
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- W108442078 date "2005-01-01" @default.
- W108442078 modified "2023-09-27" @default.
- W108442078 title "Real and Complex PDE‐Based Schemes for Image Sharpening and Enhancement" @default.
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- W108442078 doi "https://doi.org/10.1016/s1076-5670(04)36001-5" @default.
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