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<h1>Digital Film Restoration</h1>
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<h2 id="digital-film-restoration"><strong>Digital Film Restoration</strong></h2>
<hr>
<p>Activities concern several aspects of digital film restoration, including the analysis of issues related to the
problem, ranging from the kind of different defects, to their causes, and to methods and algorithms for their
removal. Particular attention is given to some specific types of defects that can affect digital image sequences
and to methodologies adopted for their management, devising new machine learning based algorithms and methodologies
for their removal. Defects taken into consideration include dust and dirt and linear scratches.<br>
We have proposed methods for automatic removal of linear scratches in digital image sequences, based on the idea of
adopting an image model as simple as possible, evaluate the displacement of such model from the real model, and
correct scratch removal through the addition of the computed displacement.<br>
Moreover, we devised a method for the detection and the removal of linear blue scratches that affect also modern
color movies, based on specific characteristics of such kind of defect.<br>
We also proposed a new methodology for the solution of classes of problems related to digital film restoration
that is well suited for implementation into high-performance parallel and distributed computing environments. The
basic idea is to adopt several well settled algorithms for the class of problems at hand, and to combine obtained
results through the adoption of suitable image fusion techniques, with the aim of taking advantage of adopted
algorithms potentialities and at the same time reducing their disadvantages.<br>
Finally, for dust and blotch removal, a novel approach was envisaged, based on viewing the problem as one of
separating overlapping images, and then reformulating it as a Blind Separation problem, approached through
Independent Component Analysis techniques. See links to: - GC06BlueScratches: Page created in order to show the
images used for testing of the blue scratch detection and removal algorithms presented in [7] and [8].</p>
<ul>
<li>BlueScratches: Page created in order to show the images used for testing of the blue scratch detection and
removal algorithms presented in [8]. - DataFusionScratches: Page created in order to show the images used for
testing of the scratch detection and removal algorithm presented in [9].</li>
</ul>
<h3 id="papers-on-digital-film-restoration">Papers on Digital Film Restoration</h3>
<p>[1] L. Maddalena, <a href="https://ieeexplore.ieee.org/document/957067Efficient">Methods for Scratch Removal in Image Sequences</a> , in Proceedings of 11th International Conference on Image Analysis and Processing (ICIAP2001), IEEE Computer Society, ISBN 0-7695-1183-X, DOI 10.1109/ICIAP.2001.957067, pp 547-552, 2001.</p>
<p>[2] G. Laccetti, L. Maddalena, A. Petrosino, Parallel/Distributed Film Line Scratch Restoration by Fusion Techniques, A. Laganà et al. (eds.), “Computational Science and its Applications – ICCSA 2004”, Lecture Notes in Computer Science, n. 3044, Springer, ISBN 3-540-22056-9, DOI 10.1007/b98051, pp. 524-534, 2004.</p>
<p>[3] G. Laccetti, L. Maddalena, A. Petrosino, P-LSR: A Parallel Algorithm for Line Scratch Restoration, in Proceedings of the Seventh International Workshop on Computer Architecture for Machine Perception (CAMP2005), IEEE Computer Society, ISBN 0-7695-2255-6, pp. 225-230, 2005.</p>
<p>[4] G. Laccetti, L. Maddalena, A. Petrosino, Removing Line Scratches in Digital Image Sequences by Fusion Techniques, in F. Roli e S. Vitulano (eds), 13th International Conference on Image Analysis and Processing (ICIAP2005), Lecture Notes in Computer Science, n. 3617, Springer-Verlag Berlin Heidelberg, pp. 695-702, DOI 10.1007/11553595_85, 2005.</p>
<p>[5] L. Maddalena, A. Petrosino, A New Methodology for Line Scratch Restoration, in Summaries of “VIII Congresso Nazionale della SIMAI”, p. 210, 2006.</p>
<p>[6] L. Maddalena, Recent Developments in Digital Film Restoration, in C. D’Amico (Ed.), Innovazioni Tecnologiche per i Beni Culturali in Italia, Patron Editore, ISBN 88-555-2886-6, 2006.</p>
<p>[7] L. Maddalena, A. Petrosino, A Comparison of Algorithms for Blue Scratch Removal in Digital Images, in A. Rizzi (Ed.), Colore e colorimetria: contributi multidisciplinari, vol. II, SIOF, ISBN-10 88-7957-252-0, pp. 133-144, 2006.</p>
<p>[8] L. Maddalena, A. Petrosino, Restoration of Blue Scratches in Digital Image Sequences, Image and Vision Computing, Vol. 26, Elsevier, The Netherlands, pagg. 1314–1326, 2008.</p>
<p>[9] L. Maddalena, A. Petrosino, G. Laccetti, A Fusion-based Approach to Digital Movie Restoration, Pattern Recognition, DOI 10.1016/j.patcog.2008.10.026, Vol. 42, no. 7, pagg. 1485-1495, 2009.</p>
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