Video enhancement in low-light condition via interval flash

Abstract

In this paper, I present a method that enhances the quality of video shot by general digital camera using its own flash, in low-light condition. In a dark environment, our method takes a sequence that is mixed two kinds of data: crude dark scene and flashed scene as interval. Periodic bright images are designated as anchor frames, and propagated its data to remains. To accomplish it, I compute difference map between successive two frames to utilize advantage of temporal video coherence, decide color of unknown pixels, and generate corrected sequence by combining those data. This method gives innovative progress on utility of built-in camera flash, and novel video editing tool in uncommon way.