Method and apparatus for color correction in an alpha matting process

摘要

A method for color correction in an alpha matting process for an image and an apparatus (20) configured to perform the method are described. The apparatus (20) comprises a parameter retrieving unit 23 that retrieves 10 an initial image carrying unmixed colors, e.g. from a color estimator 24 or by resorting to a previously generated initial image. A guided image filter 25 then filters 11 the initial image using the image as a guiding image.