1. An image compensation method for a display having pixels that are aging due to shifts in one or more aging characteristics of the pixels, each of the pixels comprising a light emitting device, the method comprising: measuring, using a measurement circuit, an aging characteristic of each pixel of a spaced apart subset of the pixels of the display to produce a set of initial pixel measurements; determining localized maximums of a gradient magnitude defined by the set of initial pixel measurements; defining a second subset of pixels of the display with use of the determined localized maximums of the gradient magnitude; measuring, using the measurement circuit, the aging characteristic of each pixel of the second subset of pixels of the display to produce a second set of pixel measurements; producing an aging pattern based on the set of initial pixel measurements and the second set of pixel measurements; storing the aging pattern in a memory device; generating, with use of the aging pattern, an estimation matrix corresponding to a pixel resolution of the display for improving an image uniformity of the light emitting devices across the display.