1. An apparatus, comprising: mapping logic configured to produce a high-resolution pixel from a low-resolution pixel, where the high-resolution pixel has a greater bit depth than the low-resolution pixel; contour segmentation logic configured to classify the high-resolution pixel as being in a smooth region of an image based on at least one of a gradient value and a variance value associated with the low-resolution pixel; contour refinement logic configured to selectively re-classify the high-resolution pixel as not being in the smooth region of the image based on a set of neighboring high-resolution pixels associated with high-resolution pixel; and range adjustment logic configured to selectively filter the high-resolution pixel based on whether the high-resolution pixel remains classified as being in the smooth region of the image.