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Iterative pre- and post-processing for MRC layers of scanned documents

8 years 8 months ago
Iterative pre- and post-processing for MRC layers of scanned documents
The Mixed Raster Content (MRC) document compression standard (ITU T.44) specifies a multi-layer multi-resolution representation of a compound document. The model is very efficient for representing sharp text and graphics onto a background. However, since the mask layer is binary, it is difficult to deal with scanned data and soft edges. The edge transitions do not fully belong to the foreground neither to the background, and cause some “halo” to the object edges using the MRC model. This paper presents an algorithm that builds an edge sharpening map and iteratively parameterizes the original edge “softness” at the encoder. The generated map and the “softness” parameters are, then, used to reconstruct the original soft edges at the decoder. Experimental results are
Alexandre Zaghetto, Ricardo L. de Queiroz
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICIP
Authors Alexandre Zaghetto, Ricardo L. de Queiroz
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