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Publikace

A framework for virtual restoration of ancient documents by combination of multispectral and 3D imaging

Typ:
Konferenční příspěvek
Autoři publikace:
Bianco,Bruno,Tonazzini,Salerno,Savino,Zitová B., Šroubek F.
Název sborniku:
Eurographics Italian Chapter Conference
Nakladatel:
The Eurographics Association
Místo vydání:
Janov
Rok:
2010
ISBN:
978-3-905673-80-7
Klíčová slova:
Image Processing Application, Document Capture, Document Ana
Anotace:
Our paper presents a framework for virtual restoration of ancient documents based on a combination of multispectral acquisition, 3D imaging and digital image analysis. The proposed framework consists of several steps. First, digital representations of the documents are acquired as multispectral images and 3D surface maps, the latter reconstructed by a structured light technique. A multispectral camera and a digital projector are used in triangular configuration for 2D and 3D data acquisition. Then the multispectral images are registered against possible misalignments, and the 3D surface representation is used to correct geometrical distortions. Document flattening is then performed by 3D surface parameterization and texture mapping. Statistical techniques of decorrelation are applied to extract individual context parts of the document patterns (stamp, text, etc.) and to attenuate interferences. The processed data are then binarized by the proper segmentation technique.
 
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