An a-contrario approach to quasi-periodic noise removal

Frédéric Sur (1)

1 MAGRIT - Visual Augmentation of Complex Environments

Images can be affected by quasi-periodic noise. This undesirable feature manifests itself by spurious repetitive patterns covering the whole image, well localized in the Fourier domain. While notch filtering permits to get rid of this phenomenon , this however requires to first detect the resulting Fourier spikes, and, in particular, to discriminate between noise spikes and spectrum patterns caused by spatially localized textures or repetitive structures. This paper proposes a statistical a-contrario detection of noise spikes in the Fourier domain. A Matlab code is also provided.

Mots clés: quasi-periodic noise; a-contrario method

Domaines: Traitement des images [eess.IV]; Traitement du signal et de l'image [eess.SP]; Vision par ordinateur et reconnaissance de formes [cs.CV]

Frédéric Sur. An a-contrario approach to quasi-periodic noise removal. ICIP - IEEE International Conference on Image Processing, Sep 2015, Québec City, Canada. ⟨10.1109/ICIP.2015.7351524⟩. ⟨hal-01211397⟩