1. In a computer system, a method of generating a high dynamic range digital image, the method comprising; performing motion analysis relative to a reference image in a set of plural digital images depicting a scene, the motion analysis comprising determining image differences for each of one or more non-reference images in the set, relative to the reference image; based at least in part on the motion analysis, deriving one or more relative exposure levels relative to the reference image for each non-reference image; and based at least in part on the one or more relative exposure levels, integrating the set of plural digital images to form a higher dynamic range digital image depicting the scene.