Abstract
In this paper we propose a variational approach for video denoising, based on a total directional variation (TDV) regulariser proposed in [20, 21] for image denoising and interpolation. In the TDV regulariser, the underlying image structure is encoded by means of weighted derivatives so as to enhance the anisotropic structures in images, e.g. stripes or curves with a dominant local directionality. For the extension of TDV to video denoising, the space-time structure is captured by the volumetric structure tensor guiding the smoothing process. We discuss this and present our whole video denoising workflow. The numerical results are compared with some state-of-the-art video denoising methods.
SP acknowledges UK EPSRC grant EP/L016516/1 for the CCA DTC. CBS acknowledges support from Leverhulme Trust project on Breaking the non-convexity barrier, EPSRC grant Nr. EP/M00483X/1, the EPSRC Centre EP/N014588/1, the RISE projects CHiPS and NoMADS, the CCIMI and the Alan Turing Institute.
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Notes
- 1.
Videos are freely available: Salesman and Miss America at www.cs.tut.fi/~foi/GCF-BM3D Xylophone in MATLAB; Water (re-scaled, grey-scaled and clipped, Jay Miller, CC 3.0) at www.videvo.net/video/water-drop/477; Franke’s function (a synthetic surface moving on fixed trajectories: the coloured one changes with the parula colormap).
- 2.
Results are available at http://www.simoneparisotto.com/TDV4videodenoising.
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Parisotto, S., Schönlieb, CB. (2019). Total Directional Variation for Video Denoising. In: Lellmann, J., Burger, M., Modersitzki, J. (eds) Scale Space and Variational Methods in Computer Vision. SSVM 2019. Lecture Notes in Computer Science(), vol 11603. Springer, Cham. https://doi.org/10.1007/978-3-030-22368-7_41
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