0349637 20240103194127.020101116235959.9 6 s. cav_un_epca*0349636978-963-9911-16-129-34BudapestARCHAEOLINGUA2010IoannidesM.FellnerD.GeorgopoulosA.HadjimitsisD. document analysis deblurring image registration multispectral imaging blind source deconvolution cav_un_auth*0265690 Bianco G. IT cav_un_auth*0265691 Bruno F. IT cav_un_auth*0265692 Salerno E. IT cav_un_auth*0265693 Tonazzini A. IT cav_un_auth*0101238 Zitová Barbara Zpracování obrazové informace Department of Image Processing ZOI ZOI UTIA-B Department of Image Processing Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0101209 Šroubek Filip Zpracování obrazové informace Department of Image Processing ZOI ZOI UTIA-B Department of Image Processing Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2010/ZOI/zitova-quality%20improvement%20of%20multispectral%20images%20for%20ancient%20document%20analysis.pdf 1M0572 GA MŠk cav_un_auth*0001814 GA102/08/1593 GA ČR cav_un_auth*0239572 CEZ:AV0Z10750506 In this paper we will present a methodology to preliminarily register multispectral images od ancient documents in order to correct geometrical misalignments, and apply deblurring techniques to improve image quality for further document analysis, where sharper images are needed. Deblurring is performed with a multichannel approach, adapted to the case of multispectral acquisition. Statistical techniques of decorrelation are applied to improve the legibility of documents or to restore degraded features, extract individual context parts of the document, separate patterns as the main text from the background, or attenuate interferences due to the seeping of ink from verso-to-recto. cav_un_auth*0265694 3rd International Conference dedicated on Digital Heritage Limasol 08.11.2010-13.11.2010 CY 2011 JD 6 http://hdl.handle.net/11104/0189822 2010 cav_un_epca*0349636 EUROMED 2010, 3rd International Conference dedicated on Digital Heritage 978-963-9911-16-1 29 34 Budapest ARCHAEOLINGUA 2010 Ioannides M. 340 Fellner D. 340 Georgopoulos A. 340 Hadjimitsis D. 340