Contributo in atti di convegno, 2004, ENG

Bleed-through removal from degraded documents using a color decorrelation method

Tonazzini A.; Salerno E.; Mochi M.; Bedini L.

CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy

A color decorrelation strategy to improve the human or automatic readability of degraded documents is presented. The particular degradation that is considered here is bleed-through, that is, a pattern that interferes with the text to be read due to seeping of ink from the reverse side of the document. A simplified linear model for this degradation is introduced to permit the application of very fast decorrelation techniques to the RGB components of the color data images, and to compare this strategy to the independent component analysis approach. Some examples from an extensive experimentation with real ancient documents are described, and the possibility to further improve the restoration performance by using hyperspectral/multispectral data is envisaged.

International Workshop on Document Analysis Systems, pp. 229–240, Florence, Italy, 8-10 September

Keywords

Degraded documents, Bleed-through cancellation, Color decorrelation, Principal component analysis

CNR authors

Bedini Luigi, Salerno Emanuele, Tonazzini Anna

CNR institutes

ISTI – Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo"

ID: 43741

Year: 2004

Type: Contributo in atti di convegno

Creation: 2009-06-16 00:00:00.000

Last update: 2018-06-18 13:08:39.000

External links

OAI-PMH: Dublin Core

OAI-PMH: Mods

OAI-PMH: RDF

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:43741

ISI Web of Science (WOS): 000223982000022

Scopus: 2-s2.0-33745528230