In a pixel array within an integrated-circuit image sensor, a pixel (870) includes a photodetector (260) and floating diffusion (262) formed within a substrate. First (881) and second (883) gate elements are disposed adjacent one another over a region (885) of the substrate between the photodetector and the floating diffusion and coupled respectively to a row line (TGr) that extends in a row direction within the pixel array and a column line (TGc) that extends in a column direction within the pixel array.