Bounded variation spaces with generalized Orlicz growth related to image denoising
: Eleuteri, Michela; Harjulehto, Petteri; Hästö, Peter
Publisher: Springer Science and Business Media LLC
: HEIDELBERG
: 2025
: Mathematische Zeitschrift
: Mathematische Zeitschrift
: MATH Z
: 26
: 310
: 2
: 28
: 0025-5874
: 1432-1823
DOI: https://doi.org/10.1007/s00209-025-03731-9
: https://doi.org/10.1007/s00209-025-03731-9
: https://research.utu.fi/converis/portal/detail/Publication/491742249
Motivated by the image denoising problem and the undesirable stair-casing effect of the total variation method, we introduce bounded variation spaces with generalized Orlicz growth. Our setup covers earlier variable exponent and double phase models. We study the norm and modular of the new space and derive a formula for the modular in terms of the Lebesgue decomposition of the derivative measure and a location dependent recession function. We also show that the modular can be obtained as the Γ-limit of uniformly convex approximating energies.
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Open Access funding provided by University of Helsinki (including Helsinki University Central
Hospital).