1. A method for enhancing an image from an initial image comprising the steps of: (a) computing a first luminance level frequency distribution corresponding to a plurality of pixels constructing said initial image; (b) representing said first luminance level frequency distribution as a resultant of Gaussian model mixtures to assess relative utilization of overall luminance level across said initial image; (c) computing a desired luminance level frequency distribution as a function of the relative utilization; (d) computing a transfer function to adjust the first luminance level frequency distribution to an enhanced luminance level as a function of desired level frequency distribution estimation; and (e) applying said transfer function globally to said initial image to provide an enhanced image.