Bleed-through Correction of Double-sided Document Images

The main drawback of ICA-based bleed-through correction methods is that they cannot adapt to spatial variations of the degree of the bleed-through effect. Without an explicit consideration of this effect, these methods suffer from undesired artifacts on their outputs.

The following example, from [Farrahi2009], can serve as a benchmark to test adaptivity of a method to spatial variations:

... ...
Catspy, Example 1, Recto side [Farrahi2009] Catspy, Example 1, Verso side [Farrahi2009]

The results of a few methods are provided below:

Method name Catspy, Example 1, Recto Output Catspy, Example 1, verso Output
Diffusion Model [Farrahi2009] ... ...
Chi-Chen [Chi2012] (Provided by the authors) ... ...
Chi-Chen [Chi2012] (Results of the open source implementation) ... ...

For the purpose of comparison, Chi-Chen method [Chi2012] has been implemented as an open source code based on their paper. The executable can be downloaded here (39). --- The matlab source code can be downloaded here. It requires Python 2.5 (installed in c:\Python25\), Gamera framework, and (18).

Implementation of other methods will be added soon.

[Farrahi2009] - Reza FARRAHI MOGHADDAM and Mohamed CHERIET, Low quality document image modeling and enhancement, IJDAR, 11, 183-201, 2009. DOI: 10.1007/s10032-008-0076-2 On Synchromedia website Download.

[Farrahi2010] - Reza FARRAHI MOGHADDAM and Mohamed CHERIET, A Variational Approach to Degraded Document Enhancement, IEEE-PAMI, 32, 1347-1361, 2010. DOI: 10.1109/TPAMI.2009.141 On Synchromedia website Download.

[Chi2012] - Bingyu CHI and Youbin CHEN, Reduction of Bleed-through Effect in Images of Chinese Bank Items, ICFHR'12, 174-178, Bari, Italy, Sept 18-20, 2012. DOI: 10.1109/ICFHR.2012.260 Another link to Download. (8)

catspy1_ur0.png29.62 KB
catspy1_uv0.png28.59 KB
catspy1_urnew_bin.png4.12 KB
catspy1_uvnew_bin.png3.55 KB
Binarize_Gatos_Rough.zip607 bytes
catspy1_urnew_chi_chen_a.jpg70.11 KB
catspy1_uvnew_chi_chen_a.jpg63.3 KB
Chi_Chen_Binarization.zip2.02 MB
Chi_Chen_image.m3.36 KB
catspy1_urnew_chi_chen.png7.71 KB
catspy1_uvnew_chi_chen.png6.68 KB
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