1. A method comprising: accessing a region of an image, the region including a plurality of pixels; selecting one or more wavelengths; selecting one or more associated phases for the one or more wavelengths; constructing a digital image registration pattern by applying a function to the one or more wavelengths and the one or more associated phases for the one or more wavelengths, the digital image registration pattern including a plurality of pattern values; and altering at least one pixel variable value of the plurality of pixels by a pattern value obtained from the digital image registration pattern.