Spatio-temporal video restoration technique using a 3d anisotropic diffusion-based scheme
Tudor Barbu, Costică Moroşanu · Bulletin of the "Transilvania" University of Braşov. Series III, Mathematics and Computer Science · 2025
A spatio-temporal video filtering approach is proposed in this article. The video restoration technique introduced here removes successfully the signalindependent noises, such as the additive white Gaussian noise, that deteriorate the frame sequences. The proposed framework is based on a novel 3D fourth-order nonlinear reaction-diffusion model that reduces the additive white Gaussian noise (AWGN) considerably, overcomes the side-effects and deals properly with the inter-frame correlation problem. A rigorous mathematical treatment is performed on this model, its validity being investigated. A numerical approximation algorithm that solves this nonlinear partial differential equation (PDE)-based model is then provided in this paper and applied successfully in the video denoising tests that are also described here.