A nonlinear blind source separation solution for removing the show-through effect in the scanned documents

Farnood Merrikh-Bayat (1) , Massoud Babaie-Zadeh (1) , Christian Jutten (2)

1 EE department of SUT [Tehran] - Department of Electrical Engineering [Tehran]
2 GIPSA-SIGMAPHY - GIPSA - Signal Images Physique

Digital documents are usually degraded during the scanning process due to the printings existing on the backside of the scanning manuscript. This is often caused by the so called show-through effect, the image that interferes with the main picture due to the intrinsic opacity of the paper. This phenomenon is on type of degradation that one would like to remove. In this paper, we propose a novel and general nonlinear model for show-through phenomenon. A nonlinear blind source separation (BSS) algorithm is used for this particular application in a new recursive and extendible structure for compensating show-through. Finally, we introduce a new structure for removing the show-through and the blurring effect which appears during the scanning process simultaneously.

Keywords: source separation; nonlinear; convolutive; show-through; scanned documents

Domains: Signal and Image Processing; Signal and Image processing

Farnood Merrikh-Bayat, Massoud Babaie-Zadeh, Christian Jutten. A nonlinear blind source separation solution for removing the show-through effect in the scanned documents. EUSIPCO 2008 - 16th European Signal Processing Conference, Aug 2008, Lausanne, Switzerland. 5 p. ⟨hal-00315887⟩