Method and apparatus for spatial interpolation of color images

摘要

This invention concerns the spatial interpolation of color images and, in particular, the reconstruction, or “de-mosaicing” of data from a single sensor-array electronic camera.;Electronic cameras typically have an image sensor comprising a matrix of individual pixel sensors, each sensor being responsive to a color component. In order to obtain color component information for all pixels, in accordance with the disclosed embodiment, green component pixel values (203) are interpolated to obtain green component pixel values for all pixels (209). A difference value (B−G) (212) is formed from the green color component values (207) and the original blue component values (204) at blue pixel locations, and the difference values (B−G) (212) are then interpolated to obtain difference values for all pixels (216). Blue component values for all pixels (225) can then be obtained from the difference values for all pixels (216) and the green component values for all pixels (209).