%0 Conference Paper %B A XXVIII. Neumann Kollokvium konferencia-kiadványa %D 2015 %T Újszülöttek monitorozása képfolyam elemzéssel %A Jozsef Nemeth %A András Bánhalmi %A László G Nyúl %A Márta Fidrich %A Zsolt Szkiva %A Péter Franczia %A Csaba Berezki %A Vilmos Bilicki %B A XXVIII. Neumann Kollokvium konferencia-kiadványa %I Neumann János Számítógép-tudományi Társaság %C Veszprém, Hungary %P 32-37 %8 Nov 2015 %@ 978-615-5036-10-1 %9 Conference paper %0 Book Section %B Advanced Concepts for Intelligent Vision Systems (ACIVS) %D 2013 %T Restoration of blurred binary images using discrete tomography %A Jozsef Nemeth %A Péter Balázs %E Jacques Blanc-Talon %E Andrzej Kasinski %E Wilfried Philips %E Dan Popescu %E Paul Scheunders %X

Enhancement of degraded images of binary shapes is an important task in many image processing applications, e.g. to provide appropriate image quality for optical character recognition. Although many image restoration methods can be found in the literature, most of them are developed for grayscale images. In this paper we propose a novel binary image restoration algorithm. As a first step, it restores the projections of the shape using 1-dimensional deconvolution, then reconstructs the image from these projections using a discrete tomography technique. The method does not require any parameter setting or prior knowledge like an estimation of the signal-to-noise ratio. Numerical experiments on a synthetic dataset show that the proposed algorithm is robust to the level of the noise. The efficiency of the method has also been demonstrated on real out-of-focus alphanumeric images.

 

%B Advanced Concepts for Intelligent Vision Systems (ACIVS) %S Lecture Notes in Computer Science %I Springer Verlag %C Berlin; Heidelberg; New York; London; Paris; Tokyo %P 80 - 90 %8 2013 %@ 978-3-319-02894-1 %G eng %9 Conference paper %! LNCS %R 10.1007/978-3-319-02895-8_8 %0 Conference Paper %B A Képfeldolgozók és Alakfelismerők Társaságának konferenciája - KÉPAF 2009 %D 2009 %T Síkhomográfia paramétereinek becslése bináris képeken %A Jozsef Nemeth %A Csaba Domokos %A Zoltan Kato %E Dmitrij Chetverikov %E Tamas Sziranyi %B A Képfeldolgozók és Alakfelismerők Társaságának konferenciája - KÉPAF 2009 %I Akaprint %C Budapest %P 1 - 8 %8 Jan 2009 %G eng %9 Conference paper