Advances in Nonlinear Signal and Image Processing (EURASIP by Stephen Marshall, Giovanni L. Sicuranza

By Stephen Marshall, Giovanni L. Sicuranza

The curiosity in nonlinear equipment in sign processing is gradually expanding, considering the fact that these days the advances in computational capacities give the opportunity to enforce subtle nonlinear processing options which in flip enable extraordinary advancements with admire to straightforward and well-consolidated linear processing techniques. the purpose of the ebook is to give a assessment of rising new parts of curiosity regarding nonlinear sign and photo processing theories, suggestions, and instruments. greater than 30 major researchers have contributed to this ebook overlaying the foremost subject matters suitable to nonlinear sign processing. those subject matters comprise contemporary theoretical contributions in several parts of electronic filtering and a couple of functions in genomics, speech research and synthesis, verbal exchange approach, energetic noise regulate, electronic watermarking, function extraction, texture research, and colour photo processing. The publication is meant as a reference for contemporary advances and new purposes of theories, strategies, and instruments within the sector of nonlinear sign processing. the objective viewers are graduate scholars and practitioners engaged on smooth sign processing functions.

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Advances in Nonlinear Signal and Image Processing (EURASIP Book Series on Signal Processing and Communications)

The curiosity in nonlinear equipment in sign processing is gradually expanding, considering the fact that these days the advances in computational capacities give the chance to enforce subtle nonlinear processing recommendations which in flip let striking advancements with appreciate to straightforward and well-consolidated linear processing ways.

Additional resources for Advances in Nonlinear Signal and Image Processing (EURASIP Book Series on Signal Processing and Communications)

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29 shows the results of the best nonmultiresolution aperture filter (17 points window). 342 and 89, respectively. Especially visible is the improved restoration at grain edges. 30. It results from a multiresolution aperture filter starting with a 17-point window. 222 and 73, respectively. Edge restoration is further improved over the nonmultiresolution aperture filter. 6. Summary We have discussed how it is possible to treat automatic W-operator design for gray-level images in the context of finite discrete lattices.

The filter outputs differ from the original image fragment by more than one gray level at 28, 17, and 11 points for the optimal 17p ×5 aperture, 3×3×5 aperture, and linear filters, respectively. This explains why the MSE for the 17p × 5 aperture filter is not as good for these image fragments. 4. Envelope aperture Envelope design of image operators is a hybrid technique that does not rely only on machine design (that involves estimating the optimal filter from sample data) but relies also on human design.

Some useful W-operators for image segmentation cannot be described by the subclass of ζO -apertures. For instance, the threshold operator is not a ζO -aperture because it is not invariant by vertical translations, that is, Ψc ( f + z) = Ψc ( f ) + z. In order to make the description highly expressive and represent all W-operators, let ζO and ζI be two functions from LW to L; ζO associated to vertical translations in the observed image, that is, it is the function that places the aperture window and ζI associated to vertical translations in the ideal image, that is, the function that places the result of characteristic function.

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