Title :
Color Demosaicing Using Variance of Color Differences
Author :
Chung, King-Hong ; Chan, Yuk-Hee
Author_Institution :
Dept. of Electron. & Inf. Eng., Centre for Multimedia Signal Process., Hong Kong
Abstract :
This paper presents an adaptive demosaicing algorithm. Missing green samples are first estimated based on the variances of the color differences along different edge directions. The missing red and blue components are then estimated based on the interpolated green plane. This algorithm can effectively preserve the details in texture regions and, at the same time, it can significantly reduce the color artifacts. As compared with the latest demosaicing algorithms, the proposed algorithm produces the best average demosaicing performance both objectively and subjectively
Keywords :
image colour analysis; image denoising; image texture; interpolation; adaptive demosaicing algorithm; color artifact reduction; color demosaicing; color difference variance; edge directions; green plane interpolation; missing blue component; missing green samples; missing red component; texture regions; Color; Costs; Digital cameras; Digital filters; Heuristic algorithms; Image sampling; Image sensors; Interpolation; Sensor arrays; Signal processing algorithms; Bayer sampling; color demosaicing; color filter array; digital camera; interpolation;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2006.877521