1. An image processor comprising: an assigning module on the image processor configured to assign an image pixel to a first classification of a plurality of classifications that are defined by respective predetermined relationships between color components of the image pixel; and a transform module on the image processor configured to perform a first non-linear transform of the color components of the first classification to provide transformed color components for image pixels in the first classification, wherein the color components include a blue chroma component and a red chroma component, wherein the first classification is defined by relationships C b <C r and C b >10*C r , wherein C b represents the blue chroma component, and wherein C r represents the red chroma component.