Video and Image Bayesian Demosaicing with a Two Color Image Prior

Abstract. The demosaicing process converts single-CCD color representations of one color channel per pixel into full per-pixel RGB. We introduce a Bayesian technique for demosaicing Bayer color filter array patterns that is based on a statistically-obtained two color per-pixel image prior. By modeling all local color behavior as a linear combination of two fully specified RGB triples, we avoid color fringing artifacts while preserving sharp edges. Our grid-less, floating-point pixel location architecture can process both single images and multiple images from video within the same framework, with multiple images providing denser color samples and therefore better color reproduction with reduced aliasing. An initial clustering is performed to determine the underlying local two color model surrounding each pixel. Using a product of Gaussians statistical model, the underlying linear blending ratio of the two representative colors at each pixel is estimated, while simultaneously providing ...

• Type: Conference
• Year: 2006
• Where: ECCV
• Authors: Eric P. Bennett, Matthew Uyttendaele, C. Lawrence Zitnick, Richard Szeliski, Sing Bing Kang
• Keywords: Bayer Color Filter, Color Fringing Artifacts, Color Per-pixel Image, Computer Vision, Denser Color Samples, ECCV 2006, Local Color Behavior