Localised Deflicker of Moving Images

Brightness uctuations in sequences are a typical impairment in archive and modern footage. These uctuations are mainly temporal but they may also present spatial variations across each individual frame. Current de icker techniques consider that these variations are smooth but this paper shows that the icker localisation can be very ne in some cases. This paper presents a de icker algorithm that is able to handle within a same framework both very smooth spatial variations and very localised variations. The core of the method lies in the parametrisation of the icker model with only one parameter per pixel. The viability of using such a ne parametrisation is made possible by employing a temporal ltering that e ectively separates occlusions from the icker estimation.