1. A method for operating a stacked-chip image sensor having a planar array of image pixels, control circuitry, storage and processing circuitry, a first two-dimensional array of conductive vias coupled between the planar image pixel array and the control circuitry and a second two-dimensional array of conductive vias coupled between the control circuitry and the storage and processing circuitry, the method comprising: with the image pixels, capturing image frames at a capture frame rate; with the control circuitry, reading out the image frames over a portion of the first two-dimensional array of conductive vias; with the control circuitry, providing the image frames to the storage and processing circuitry over a portion of the second two-dimensional array of conductive vias; with the storage and processing circuitry, detecting a region of changing brightness in the image frames, wherein the region of changing brightness corresponds to a portion of a scene that is illuminated by a light source associated with an oscillation frequency, wherein the capture frame rate corresponds to a capture frequency that is least twice the oscillation frequency; and with the storage and processing circuitry, adjusting the detected region of changing brightness in the image frames to produce at least one output image.