The optimum reproduction of images with extended latitude remains a challenging topic in both digital display and digital printing. Here a simple procedure is described for the restoration and enhancement of shadows and highlights in digital images where significant detail would otherwise be omitted in these regions. This procedure is based on a two-stage image-enhancement algorithm that is simple in concept yet designed according to rigorous visual-science criteria. An outline is presented of how these criteria influence the design of the two stages, and details are given of the practical nature of both these stages for the enhancement of typical extended-latitude digital images.
Rodney Shaw, "A Simple Procedure for the Restoration of Shadows and Highlights in Digital Prints" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP18), 2002, pp 595 - 598, https://doi.org/10.2352/ISSN.2169-4451.2002.18.1.art00039_2