1. A method for correcting pixel values of a plurality of pixels, comprising the steps of: (A) generating a plurality of corrected values by applying a decompressed correction model to said pixel values, wherein said correction model includes a plurality of gain values and a plurality of offset values; and (B) replacing said pixel values of one or more of said pixels marked in said decompressed correction model by both (i) a corresponding one of said gain values having a first predetermined value and (ii) a corresponding one of said offset values having a second predetermined value.