Flicker Removal and Color Correction for High Speed Videos

Abstract : Deflickering consists of removing rapid, artifactual changes of luminosity and colorimetry from image sequences and improving luminosity consistency between video frames. It is a necessary and fundamental task in multiple applications, for instance in archived film sequences, compressed videos and time-lapse videos. In recent years, there has been a renewal of interest for improving luminosity consistency acquisition technology in the flicker removal problem, in particular for periodic flickering. In this context, flicker corresponds to undesirable intensity and chroma variations due to the interaction between the acquisition frequencies on the one hand, and the alternating current powering the light sources on the other hand. The present thesis formulates the periodic deflickering problem in high speed videos, studies the physical properties of flicker and suggests both theoretical and experimental solutions for its removal from image sequences. Finally, a new flicker removal approach is proposed performing jointly motion tracking and color correction
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Ali Kanj. Flicker Removal and Color Correction for High Speed Videos. Other [cs.OH]. Université Paris-Est, 2017. English. ⟨NNT : 2017PESC1115⟩. ⟨tel-01744714⟩

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